Add m-esr52 at 52.6.0

87 files changed, 12419 insertions, 0 deletions

diff --git a/python/altgraph/MANIFEST.in b/python/altgraph/MANIFEST.in
new file mode 100644
index 000000000..9a9b96078
--- /dev/null
+++ b/python/altgraph/MANIFEST.in
@@ -0,0 +1,9 @@
+include ReadMe.txt
+include *.txt MANIFEST.in *.py
+graft doc
+graft doc/_static
+graft doc/_templates
+graft altgraph_tests
+global-exclude .DS_Store
+global-exclude *.pyc
+global-exclude *.so
diff --git a/python/altgraph/PKG-INFO b/python/altgraph/PKG-INFO
new file mode 100644
index 000000000..87b602f52
--- /dev/null
+++ b/python/altgraph/PKG-INFO
@@ -0,0 +1,216 @@
+Metadata-Version: 1.1
+Name: altgraph
+Version: 0.12
+Summary: Python graph (network) package
+Home-page: http://packages.python.org/altgraph
+Author: Ronald Oussoren
+Author-email: ronaldoussoren@mac.com
+License: MIT
+Download-URL: http://pypi.python.org/pypi/altgraph
+Description: altgraph is a fork of graphlib: a graph (network) package for constructing
+        graphs, BFS and DFS traversals, topological sort, shortest paths, etc. with
+        graphviz output.
+        
+        altgraph includes some additional usage of Python 2.6+ features and
+        enhancements related to modulegraph and macholib.
+        
+        
+        Release history
+        ===============
+        
+        0.12
+        ----
+        
+        - Added ``ObjectGraph.edgeData`` to retrieve the edge data
+          from a specific edge.
+        
+        - Added ``AltGraph.update_edge_data`` and ``ObjectGraph.updateEdgeData``
+          to update the data associated with a graph edge.
+        
+        0.11
+        ----
+        
+        - Stabilize the order of elements in dot file exports,
+          patch from bitbucket user 'pombredanne'.
+        
+        - Tweak setup.py file to remove dependency on distribute (but
+          keep the dependency on setuptools)
+        
+        
+        0.10.2
+        ------
+        
+        - There where no classifiers in the package metadata due to a bug
+          in setup.py
+        
+        0.10.1
+        ------
+        
+        This is a bugfix release
+        
+        Bug fixes:
+        
+        - Issue #3: The source archive contains a README.txt
+          while the setup file refers to ReadMe.txt.
+        
+          This is caused by a misfeature in distutils, as a
+          workaround I've renamed ReadMe.txt to README.txt
+          in the source tree and setup file.
+        
+        
+        0.10
+        -----
+        
+        This is a minor feature release
+        
+        Features:
+        
+        - Do not use "2to3" to support Python 3.
+        
+          As a side effect of this altgraph now supports
+          Python 2.6 and later, and no longer supports
+          earlier releases of Python.
+        
+        - The order of attributes in the Dot output
+          is now always alphabetical.
+        
+          With this change the output will be consistent
+          between runs and Python versions.
+        
+        0.9
+        ---
+        
+        This is a minor bugfix release
+        
+        Features:
+        
+        - Added ``altgraph.ObjectGraph.ObjectGraph.nodes``, a method
+          yielding all nodes in an object graph.
+        
+        Bugfixes:
+        
+        - The 0.8 release didn't work with py2app when using
+          python 3.x.
+        
+        
+        0.8
+        -----
+        
+        This is a minor feature release. The major new feature
+        is a extensive set of unittests, which explains almost
+        all other changes in this release.
+        
+        Bugfixes:
+        
+        - Installing failed with Python 2.5 due to using a distutils
+          class that isn't available in that version of Python
+          (issue #1 on the issue tracker)
+        
+        - ``altgraph.GraphStat.degree_dist`` now actually works
+        
+        - ``altgraph.Graph.add_edge(a, b, create_nodes=False)`` will
+          no longer create the edge when one of the nodes doesn't
+          exist.
+        
+        - ``altgraph.Graph.forw_topo_sort`` failed for some sparse graphs.
+        
+        - ``altgraph.Graph.back_topo_sort`` was completely broken in
+          previous releases.
+        
+        - ``altgraph.Graph.forw_bfs_subgraph`` now actually works.
+        
+        - ``altgraph.Graph.back_bfs_subgraph`` now actually works.
+        
+        - ``altgraph.Graph.iterdfs`` now returns the correct result
+          when the ``forward`` argument is ``False``.
+        
+        - ``altgraph.Graph.iterdata`` now returns the correct result
+          when the ``forward`` argument is ``False``.
+        
+        
+        Features:
+        
+        - The ``altgraph.Graph`` constructor now accepts an argument
+          that contains 2- and 3-tuples instead of requireing that
+          all items have the same size. The (optional) argument can now
+          also be any iterator.
+        
+        - ``altgraph.Graph.Graph.add_node`` has no effect when you
+          add a hidden node.
+        
+        - The private method ``altgraph.Graph._bfs`` is no longer
+          present.
+        
+        - The private method ``altgraph.Graph._dfs`` is no longer
+          present.
+        
+        - ``altgraph.ObjectGraph`` now has a ``__contains__`` methods,
+          which means you can use the ``in`` operator to check if a
+          node is part of a graph.
+        
+        - ``altgraph.GraphUtil.generate_random_graph`` will raise
+          ``GraphError`` instead of looping forever when it is
+          impossible to create the requested graph.
+        
+        - ``altgraph.Dot.edge_style`` raises ``GraphError`` when
+          one of the nodes is not present in the graph. The method
+          silently added the tail in the past, but without ensuring
+          a consistent graph state.
+        
+        - ``altgraph.Dot.save_img`` now works when the mode is
+          ``"neato"``.
+        
+        0.7.2
+        -----
+        
+        This is a minor bugfix release
+        
+        Bugfixes:
+        
+        - distutils didn't include the documentation subtree
+        
+        0.7.1
+        -----
+        
+        This is a minor feature release
+        
+        Features:
+        
+        - Documentation is now generated using `sphinx <http://pypi.python.org/pypi/sphinx>`_
+          and can be viewed at <http://packages.python.org/altgraph>.
+        
+        - The repository has moved to bitbucket
+        
+        - ``altgraph.GraphStat.avg_hops`` is no longer present, the function had no
+          implementation and no specified behaviour.
+        
+        - the module ``altgraph.compat`` is gone, which means altgraph will no
+          longer work with Python 2.3.
+        
+        
+        0.7.0
+        -----
+        
+        This is a minor feature release.
+        
+        Features:
+        
+        - Support for Python 3
+        
+        - It is now possible to run tests using 'python setup.py test'
+        
+          (The actual testsuite is still very minimal though)
+        
+Keywords: graph
+Platform: any
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Topic :: Scientific/Engineering :: Mathematics
+Classifier: Topic :: Scientific/Engineering :: Visualization
diff --git a/python/altgraph/README.txt b/python/altgraph/README.txt
new file mode 100644
index 000000000..904a14be5
--- /dev/null
+++ b/python/altgraph/README.txt
@@ -0,0 +1,6 @@
+altgraph is a fork of graphlib: a graph (network) package for constructing
+graphs, BFS and DFS traversals, topological sort, shortest paths, etc. with
+graphviz output.
+
+altgraph includes some additional usage of Python 2.6+ features and
+enhancements related to modulegraph and macholib.
diff --git a/python/altgraph/altgraph/Dot.py b/python/altgraph/altgraph/Dot.py
new file mode 100644
index 000000000..49a471e4d
--- /dev/null
+++ b/python/altgraph/altgraph/Dot.py
@@ -0,0 +1,299 @@
+'''
+altgraph.Dot - Interface to the dot language
+============================================
+
+The :py:mod:`~altgraph.Dot` module provides a simple interface to the
+file format used in the `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_
+program. The module is intended to offload the most tedious part of the process
+(the **dot** file generation) while transparently exposing most of its features.
+
+To display the graphs or to generate image files the `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_
+package needs to be installed on the system, moreover the :command:`dot` and :command:`dotty` programs must
+be accesible in the program path so that they can be ran from processes spawned
+within the module.
+
+Example usage
+-------------
+
+Here is a typical usage::
+
+    from altgraph import Graph, Dot
+
+    # create a graph
+    edges = [ (1,2), (1,3), (3,4), (3,5), (4,5), (5,4) ]
+    graph = Graph.Graph(edges)
+
+    # create a dot representation of the graph
+    dot = Dot.Dot(graph)
+
+    # display the graph
+    dot.display()
+
+    # save the dot representation into the mydot.dot file
+    dot.save_dot(file_name='mydot.dot')
+
+    # save dot file as gif image into the graph.gif file
+    dot.save_img(file_name='graph', file_type='gif')
+
+Directed graph and non-directed graph
+-------------------------------------
+
+Dot class can use for both directed graph and non-directed graph
+by passing ``graphtype`` parameter.
+
+Example::
+
+    # create directed graph(default)
+    dot = Dot.Dot(graph, graphtype="digraph")
+
+    # create non-directed graph
+    dot = Dot.Dot(graph, graphtype="graph")
+
+Customizing the output
+----------------------
+
+The graph drawing process may be customized by passing
+valid :command:`dot` parameters for the nodes and edges. For a list of all
+parameters see the `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_
+documentation.
+
+Example::
+
+    # customizing the way the overall graph is drawn
+    dot.style(size='10,10', rankdir='RL', page='5, 5' , ranksep=0.75)
+
+    # customizing node drawing
+    dot.node_style(1, label='BASE_NODE',shape='box', color='blue' )
+    dot.node_style(2, style='filled', fillcolor='red')
+
+    # customizing edge drawing
+    dot.edge_style(1, 2, style='dotted')
+    dot.edge_style(3, 5, arrowhead='dot', label='binds', labelangle='90')
+    dot.edge_style(4, 5, arrowsize=2, style='bold')
+
+
+.. note::
+
+   dotty (invoked via :py:func:`~altgraph.Dot.display`) may not be able to
+   display all graphics styles. To verify the output save it to an image file
+   and look at it that way.
+
+Valid attributes
+----------------
+
+    - dot styles, passed via the :py:meth:`Dot.style` method::
+
+        rankdir = 'LR'   (draws the graph horizontally, left to right)
+        ranksep = number (rank separation in inches)
+
+    - node attributes, passed via the :py:meth:`Dot.node_style` method::
+
+        style = 'filled' | 'invisible' | 'diagonals' | 'rounded'
+        shape = 'box' | 'ellipse' | 'circle' | 'point' | 'triangle'
+
+    - edge attributes, passed via the :py:meth:`Dot.edge_style` method::
+
+        style     = 'dashed' | 'dotted' | 'solid' | 'invis' | 'bold'
+        arrowhead = 'box' | 'crow' | 'diamond' | 'dot' | 'inv' | 'none' | 'tee' | 'vee'
+        weight    = number (the larger the number the closer the nodes will be)
+
+    - valid `graphviz colors <http://www.research.att.com/~erg/graphviz/info/colors.html>`_
+
+    - for more details on how to control the graph drawing process see the
+      `graphviz reference <http://www.research.att.com/sw/tools/graphviz/refs.html>`_.
+'''
+import os
+import warnings
+
+from altgraph import GraphError
+
+
+class Dot(object):
+    '''
+    A  class providing a **graphviz** (dot language) representation
+    allowing a fine grained control over how the graph is being
+    displayed.
+
+    If the :command:`dot` and :command:`dotty` programs are not in the current system path
+    their location needs to be specified in the contructor.
+    '''
+
+    def __init__(self, graph=None, nodes=None, edgefn=None, nodevisitor=None, edgevisitor=None, name="G", dot='dot', dotty='dotty', neato='neato', graphtype="digraph"):
+        '''
+        Initialization.
+        '''
+        self.name, self.attr = name, {}
+
+        assert graphtype in ['graph', 'digraph']
+        self.type = graphtype
+
+        self.temp_dot = "tmp_dot.dot"
+        self.temp_neo = "tmp_neo.dot"
+
+        self.dot, self.dotty, self.neato = dot, dotty, neato
+
+        # self.nodes: node styles
+        # self.edges: edge styles
+        self.nodes, self.edges = {}, {}
+
+        if graph is not None and nodes is None:
+            nodes = graph
+        if graph is not None and edgefn is None:
+            def edgefn(node, graph=graph):
+                return graph.out_nbrs(node)
+        if nodes is None:
+            nodes = ()
+
+        seen = set()
+        for node in nodes:
+            if nodevisitor is None:
+                style = {}
+            else:
+                style = nodevisitor(node)
+            if style is not None:
+                self.nodes[node] = {}
+                self.node_style(node, **style)
+                seen.add(node)
+        if edgefn is not None:
+            for head in seen:
+                for tail in (n for n in edgefn(head) if n in seen):
+                    if edgevisitor is None:
+                        edgestyle = {}
+                    else:
+                        edgestyle = edgevisitor(head, tail)
+                    if edgestyle is not None:
+                        if head not in self.edges:
+                            self.edges[head] = {}
+                        self.edges[head][tail] = {}
+                        self.edge_style(head, tail, **edgestyle)
+
+    def style(self, **attr):
+        '''
+        Changes the overall style
+        '''
+        self.attr = attr
+
+    def display(self, mode='dot'):
+        '''
+        Displays the current graph via dotty
+        '''
+
+        if  mode == 'neato':
+            self.save_dot(self.temp_neo)
+            neato_cmd = "%s -o %s %s" % (self.neato, self.temp_dot, self.temp_neo)
+            os.system(neato_cmd)
+        else:
+            self.save_dot(self.temp_dot)
+
+        plot_cmd = "%s %s" % (self.dotty, self.temp_dot)
+        os.system(plot_cmd)
+
+    def node_style(self, node, **kwargs):
+        '''
+        Modifies a node style to the dot representation.
+        '''
+        if node not in self.edges:
+            self.edges[node] = {}
+        self.nodes[node] = kwargs
+
+    def all_node_style(self, **kwargs):
+        '''
+        Modifies all node styles
+        '''
+        for node in self.nodes:
+            self.node_style(node, **kwargs)
+
+    def edge_style(self, head, tail, **kwargs):
+        '''
+        Modifies an edge style to the dot representation.
+        '''
+        if tail not in self.nodes:
+            raise GraphError("invalid node %s" % (tail,))
+
+        try:
+            if tail not in self.edges[head]:
+                self.edges[head][tail]= {}
+            self.edges[head][tail] = kwargs
+        except KeyError:
+            raise GraphError("invalid edge  %s -> %s " % (head, tail) )
+
+    def iterdot(self):
+        # write graph title
+        if self.type == 'digraph':
+            yield 'digraph %s {\n' % (self.name,)
+        elif self.type == 'graph':
+            yield 'graph %s {\n' % (self.name,)
+
+        else:
+            raise GraphError("unsupported graphtype %s" % (self.type,))
+
+        # write overall graph attributes
+        for attr_name, attr_value in sorted(self.attr.items()):
+            yield '%s="%s";' % (attr_name, attr_value)
+        yield '\n'
+
+        # some reusable patterns
+        cpatt  = '%s="%s",'      # to separate attributes
+        epatt  = '];\n'          # to end attributes
+
+        # write node attributes
+        for node_name, node_attr in sorted(self.nodes.items()):
+            yield '\t"%s" [' % (node_name,)
+            for attr_name, attr_value in sorted(node_attr.items()):
+                yield cpatt % (attr_name, attr_value)
+            yield epatt
+
+        # write edge attributes
+        for head in sorted(self.edges):
+            for tail in sorted(self.edges[head]):
+                if self.type == 'digraph':
+                    yield '\t"%s" -> "%s" [' % (head, tail)
+                else:
+                    yield '\t"%s" -- "%s" [' % (head, tail)
+                for attr_name, attr_value in sorted(self.edges[head][tail].items()):
+                    yield cpatt % (attr_name, attr_value)
+                yield epatt
+
+        # finish file
+        yield '}\n'
+
+    def __iter__(self):
+        return self.iterdot()
+
+    def save_dot(self, file_name=None):
+        '''
+        Saves the current graph representation into a file
+        '''
+
+        if not file_name:
+            warnings.warn(DeprecationWarning, "always pass a file_name")
+            file_name = self.temp_dot
+
+        fp   = open(file_name, "w")
+        try:
+            for chunk in self.iterdot():
+                fp.write(chunk)
+        finally:
+            fp.close()
+
+    def save_img(self, file_name=None, file_type="gif", mode='dot'):
+        '''
+        Saves the dot file as an image file
+        '''
+
+        if not file_name:
+            warnings.warn(DeprecationWarning, "always pass a file_name")
+            file_name = "out"
+
+        if  mode == 'neato':
+            self.save_dot(self.temp_neo)
+            neato_cmd = "%s -o %s %s" % (self.neato, self.temp_dot, self.temp_neo)
+            os.system(neato_cmd)
+            plot_cmd = self.dot
+        else:
+            self.save_dot(self.temp_dot)
+            plot_cmd = self.dot
+
+        file_name  = "%s.%s" % (file_name, file_type)
+        create_cmd = "%s -T%s %s -o %s" % (plot_cmd, file_type, self.temp_dot, file_name)
+        os.system(create_cmd)
diff --git a/python/altgraph/altgraph/Graph.py b/python/altgraph/altgraph/Graph.py
new file mode 100644
index 000000000..491e5c228
--- /dev/null
+++ b/python/altgraph/altgraph/Graph.py
@@ -0,0 +1,677 @@
+"""
+altgraph.Graph - Base Graph class
+=================================
+
+..
+  #--Version 2.1
+  #--Bob Ippolito October, 2004
+
+  #--Version 2.0
+  #--Istvan Albert June, 2004
+
+  #--Version 1.0
+  #--Nathan Denny, May 27, 1999
+"""
+
+from altgraph import GraphError
+from collections import deque
+
+class Graph(object):
+    """
+    The Graph class represents a directed graph with *N* nodes and *E* edges.
+
+    Naming conventions:
+
+    - the prefixes such as *out*, *inc* and *all* will refer to methods
+      that operate on the outgoing, incoming or all edges of that node.
+
+      For example: :py:meth:`inc_degree` will refer to the degree of the node
+      computed over the incoming edges (the number of neighbours linking to
+      the node).
+
+    - the prefixes such as *forw* and *back* will refer to the
+      orientation of the edges used in the method with respect to the node.
+
+      For example: :py:meth:`forw_bfs` will start at the node then use the outgoing
+      edges to traverse the graph (goes forward).
+    """
+
+    def __init__(self, edges=None):
+        """
+        Initialization
+        """
+
+        self.next_edge = 0
+        self.nodes, self.edges = {}, {}
+        self.hidden_edges, self.hidden_nodes = {}, {}
+
+        if edges is not None:
+            for item in edges:
+                if len(item) == 2:
+                    head, tail = item
+                    self.add_edge(head, tail)
+                elif len(item) == 3:
+                    head, tail, data = item
+                    self.add_edge(head, tail, data)
+                else:
+                    raise GraphError("Cannot create edge from %s"%(item,))
+
+
+    def __repr__(self):
+        return '<Graph: %d nodes, %d edges>' % (
+            self.number_of_nodes(), self.number_of_edges())
+
+    def add_node(self, node, node_data=None):
+        """
+        Adds a new node to the graph.  Arbitrary data can be attached to the
+        node via the node_data parameter.  Adding the same node twice will be
+        silently ignored.
+
+        The node must be a hashable value.
+        """
+        #
+        # the nodes will contain tuples that will store incoming edges,
+        # outgoing edges and data
+        #
+        # index 0 -> incoming edges
+        # index 1 -> outgoing edges
+
+        if node in self.hidden_nodes:
+            # Node is present, but hidden
+            return
+
+        if node not in self.nodes:
+            self.nodes[node] = ([], [], node_data)
+
+    def add_edge(self, head_id, tail_id, edge_data=1, create_nodes=True):
+        """
+        Adds a directed edge going from head_id to tail_id.
+        Arbitrary data can be attached to the edge via edge_data.
+        It may create the nodes if adding edges between nonexisting ones.
+
+        :param head_id: head node
+        :param tail_id: tail node
+        :param edge_data: (optional) data attached to the edge
+        :param create_nodes: (optional) creates the head_id or tail_id node in case they did not exist
+        """
+        # shorcut
+        edge = self.next_edge
+
+        # add nodes if on automatic node creation
+        if create_nodes:
+            self.add_node(head_id)
+            self.add_node(tail_id)
+
+        # update the corresponding incoming and outgoing lists in the nodes
+        # index 0 -> incoming edges
+        # index 1 -> outgoing edges
+
+        try:
+            self.nodes[tail_id][0].append(edge)
+            self.nodes[head_id][1].append(edge)
+        except KeyError:
+            raise GraphError('Invalid nodes %s -> %s' % (head_id, tail_id))
+
+        # store edge information
+        self.edges[edge] = (head_id, tail_id, edge_data)
+
+
+        self.next_edge += 1
+
+    def hide_edge(self, edge):
+        """
+        Hides an edge from the graph. The edge may be unhidden at some later
+        time.
+        """
+        try:
+            head_id, tail_id, edge_data = self.hidden_edges[edge] = self.edges[edge]
+            self.nodes[tail_id][0].remove(edge)
+            self.nodes[head_id][1].remove(edge)
+            del self.edges[edge]
+        except KeyError:
+            raise GraphError('Invalid edge %s' % edge)
+
+    def hide_node(self, node):
+        """
+        Hides a node from the graph.  The incoming and outgoing edges of the
+        node will also be hidden.  The node may be unhidden at some later time.
+        """
+        try:
+            all_edges = self.all_edges(node)
+            self.hidden_nodes[node] = (self.nodes[node], all_edges)
+            for edge in all_edges:
+                self.hide_edge(edge)
+            del self.nodes[node]
+        except KeyError:
+            raise GraphError('Invalid node %s' % node)
+
+    def restore_node(self, node):
+        """
+        Restores a previously hidden node back into the graph and restores
+        all of its incoming and outgoing edges.
+        """
+        try:
+            self.nodes[node], all_edges = self.hidden_nodes[node]
+            for edge in all_edges:
+                self.restore_edge(edge)
+            del self.hidden_nodes[node]
+        except KeyError:
+            raise GraphError('Invalid node %s' % node)
+
+    def restore_edge(self, edge):
+        """
+        Restores a previously hidden edge back into the graph.
+        """
+        try:
+            head_id, tail_id, data = self.hidden_edges[edge]
+            self.nodes[tail_id][0].append(edge)
+            self.nodes[head_id][1].append(edge)
+            self.edges[edge] = head_id, tail_id, data
+            del self.hidden_edges[edge]
+        except KeyError:
+            raise GraphError('Invalid edge %s' % edge)
+
+    def restore_all_edges(self):
+        """
+        Restores all hidden edges.
+        """
+        for edge in list(self.hidden_edges.keys()):
+            try:
+                self.restore_edge(edge)
+            except GraphError:
+                pass
+
+    def restore_all_nodes(self):
+        """
+        Restores all hidden nodes.
+        """
+        for node in list(self.hidden_nodes.keys()):
+            self.restore_node(node)
+
+    def __contains__(self, node):
+        """
+        Test whether a node is in the graph
+        """
+        return node in self.nodes
+
+    def edge_by_id(self, edge):
+        """
+        Returns the edge that connects the head_id and tail_id nodes
+        """
+        try:
+            head, tail, data =  self.edges[edge]
+        except KeyError:
+            head, tail = None, None
+            raise GraphError('Invalid edge %s' % edge)
+
+        return (head, tail)
+
+    def edge_by_node(self, head, tail):
+        """
+        Returns the edge that connects the head_id and tail_id nodes
+        """
+        for edge in self.out_edges(head):
+            if self.tail(edge) == tail:
+                return edge
+        return None
+
+    def number_of_nodes(self):
+        """
+        Returns the number of nodes
+        """
+        return len(self.nodes)
+
+    def number_of_edges(self):
+        """
+        Returns the number of edges
+        """
+        return len(self.edges)
+
+    def __iter__(self):
+        """
+        Iterates over all nodes in the graph
+        """
+        return iter(self.nodes)
+
+    def node_list(self):
+        """
+        Return a list of the node ids for all visible nodes in the graph.
+        """
+        return list(self.nodes.keys())
+
+    def edge_list(self):
+        """
+        Returns an iterator for all visible nodes in the graph.
+        """
+        return list(self.edges.keys())
+
+    def number_of_hidden_edges(self):
+        """
+        Returns the number of hidden edges
+        """
+        return len(self.hidden_edges)
+
+    def number_of_hidden_nodes(self):
+        """
+        Returns the number of hidden nodes
+        """
+        return len(self.hidden_nodes)
+
+    def hidden_node_list(self):
+        """
+        Returns the list with the hidden nodes
+        """
+        return list(self.hidden_nodes.keys())
+
+    def hidden_edge_list(self):
+        """
+        Returns a list with the hidden edges
+        """
+        return list(self.hidden_edges.keys())
+
+    def describe_node(self, node):
+        """
+        return node, node data, outgoing edges, incoming edges for node
+        """
+        incoming, outgoing, data = self.nodes[node]
+        return node, data, outgoing, incoming
+
+    def describe_edge(self, edge):
+        """
+        return edge, edge data, head, tail for edge
+        """
+        head, tail, data = self.edges[edge]
+        return edge, data, head, tail
+
+    def node_data(self, node):
+        """
+        Returns the data associated with a node
+        """
+        return self.nodes[node][2]
+
+    def edge_data(self, edge):
+        """
+        Returns the data associated with an edge
+        """
+        return self.edges[edge][2]
+
+    def update_edge_data(self, edge, edge_data):
+        """
+        Replace the edge data for a specific edge
+        """
+        self.edges[edge] = self.edges[edge][0:2] + (edge_data,)
+
+    def head(self, edge):
+        """
+        Returns the node of the head of the edge.
+        """
+        return self.edges[edge][0]
+
+    def tail(self, edge):
+        """
+        Returns node of the tail of the edge.
+        """
+        return self.edges[edge][1]
+
+    def out_nbrs(self, node):
+        """
+        List of nodes connected by outgoing edges
+        """
+        l = [self.tail(n) for n in self.out_edges(node)]
+        return l
+
+    def inc_nbrs(self, node):
+        """
+        List of nodes connected by incoming edges
+        """
+        l = [self.head(n) for n in self.inc_edges(node)]
+        return l
+
+    def all_nbrs(self, node):
+        """
+        List of nodes connected by incoming and outgoing edges
+        """
+        l = dict.fromkeys( self.inc_nbrs(node) + self.out_nbrs(node) )
+        return list(l)
+
+    def out_edges(self, node):
+        """
+        Returns a list of the outgoing edges
+        """
+        try:
+            return list(self.nodes[node][1])
+        except KeyError:
+            raise GraphError('Invalid node %s' % node)
+
+        return None
+
+    def inc_edges(self, node):
+        """
+        Returns a list of the incoming edges
+        """
+        try:
+            return list(self.nodes[node][0])
+        except KeyError:
+            raise GraphError('Invalid node %s' % node)
+
+        return None
+
+    def all_edges(self, node):
+        """
+        Returns a list of incoming and outging edges.
+        """
+        return set(self.inc_edges(node) + self.out_edges(node))
+
+    def out_degree(self, node):
+        """
+        Returns the number of outgoing edges
+        """
+        return len(self.out_edges(node))
+
+    def inc_degree(self, node):
+        """
+        Returns the number of incoming edges
+        """
+        return len(self.inc_edges(node))
+
+    def all_degree(self, node):
+        """
+        The total degree of a node
+        """
+        return self.inc_degree(node) + self.out_degree(node)
+
+    def _topo_sort(self, forward=True):
+        """
+        Topological sort.
+
+        Returns a list of nodes where the successors (based on outgoing and
+        incoming edges selected by the forward parameter) of any given node
+        appear in the sequence after that node.
+        """
+        topo_list = []
+        queue = deque()
+        indeg = {}
+
+        # select the operation that will be performed
+        if forward:
+            get_edges = self.out_edges
+            get_degree = self.inc_degree
+            get_next = self.tail
+        else:
+            get_edges = self.inc_edges
+            get_degree = self.out_degree
+            get_next = self.head
+
+        for node in self.node_list():
+            degree = get_degree(node)
+            if degree:
+                indeg[node] = degree
+            else:
+                queue.append(node)
+
+        while queue:
+            curr_node = queue.popleft()
+            topo_list.append(curr_node)
+            for edge in get_edges(curr_node):
+                tail_id = get_next(edge)
+                if tail_id in indeg:
+                    indeg[tail_id] -= 1
+                    if indeg[tail_id] == 0:
+                        queue.append(tail_id)
+
+        if len(topo_list) == len(self.node_list()):
+            valid = True
+        else:
+            # the graph has cycles, invalid topological sort
+            valid = False
+
+        return (valid, topo_list)
+
+    def forw_topo_sort(self):
+        """
+        Topological sort.
+
+        Returns a list of nodes where the successors (based on outgoing edges)
+        of any given node appear in the sequence after that node.
+        """
+        return self._topo_sort(forward=True)
+
+    def back_topo_sort(self):
+        """
+        Reverse topological sort.
+
+        Returns a list of nodes where the successors (based on incoming edges)
+        of any given node appear in the sequence after that node.
+        """
+        return self._topo_sort(forward=False)
+
+    def _bfs_subgraph(self, start_id, forward=True):
+        """
+        Private method creates a subgraph in a bfs order.
+
+        The forward parameter specifies whether it is a forward or backward
+        traversal.
+        """
+        if forward:
+            get_bfs  = self.forw_bfs
+            get_nbrs = self.out_nbrs
+        else:
+            get_bfs  = self.back_bfs
+            get_nbrs = self.inc_nbrs
+
+        g = Graph()
+        bfs_list = get_bfs(start_id)
+        for node in bfs_list:
+            g.add_node(node)
+
+        for node in bfs_list:
+            for nbr_id in get_nbrs(node):
+                g.add_edge(node, nbr_id)
+
+        return g
+
+    def forw_bfs_subgraph(self, start_id):
+        """
+        Creates and returns a subgraph consisting of the breadth first
+        reachable nodes based on their outgoing edges.
+        """
+        return self._bfs_subgraph(start_id, forward=True)
+
+    def back_bfs_subgraph(self, start_id):
+        """
+        Creates and returns a subgraph consisting of the breadth first
+        reachable nodes based on the incoming edges.
+        """
+        return self._bfs_subgraph(start_id, forward=False)
+
+    def iterdfs(self, start, end=None, forward=True):
+        """
+        Collecting nodes in some depth first traversal.
+
+        The forward parameter specifies whether it is a forward or backward
+        traversal.
+        """
+        visited, stack = set([start]), deque([start])
+
+        if forward:
+            get_edges = self.out_edges
+            get_next = self.tail
+        else:
+            get_edges = self.inc_edges
+            get_next = self.head
+
+        while stack:
+            curr_node = stack.pop()
+            yield curr_node
+            if curr_node == end:
+                break
+            for edge in sorted(get_edges(curr_node)):
+                tail = get_next(edge)
+                if tail not in visited:
+                    visited.add(tail)
+                    stack.append(tail)
+
+    def iterdata(self, start, end=None, forward=True, condition=None):
+        """
+        Perform a depth-first walk of the graph (as ``iterdfs``)
+        and yield the item data of every node where condition matches. The
+        condition callback is only called when node_data is not None.
+        """
+
+        visited, stack = set([start]), deque([start])
+
+        if forward:
+            get_edges = self.out_edges
+            get_next = self.tail
+        else:
+            get_edges = self.inc_edges
+            get_next = self.head
+
+        get_data = self.node_data
+
+        while stack:
+            curr_node = stack.pop()
+            curr_data = get_data(curr_node)
+            if curr_data is not None:
+                if condition is not None and not condition(curr_data):
+                    continue
+                yield curr_data
+            if curr_node == end:
+                break
+            for edge in get_edges(curr_node):
+                tail = get_next(edge)
+                if tail not in visited:
+                    visited.add(tail)
+                    stack.append(tail)
+
+    def _iterbfs(self, start, end=None, forward=True):
+        """
+        The forward parameter specifies whether it is a forward or backward
+        traversal.  Returns a list of tuples where the first value is the hop
+        value the second value is the node id.
+        """
+        queue, visited = deque([(start, 0)]), set([start])
+
+        # the direction of the bfs depends on the edges that are sampled
+        if forward:
+            get_edges = self.out_edges
+            get_next = self.tail
+        else:
+            get_edges = self.inc_edges
+            get_next = self.head
+
+        while queue:
+            curr_node, curr_step = queue.popleft()
+            yield (curr_node, curr_step)
+            if curr_node == end:
+                break
+            for edge in get_edges(curr_node):
+                tail = get_next(edge)
+                if tail not in visited:
+                    visited.add(tail)
+                    queue.append((tail, curr_step + 1))
+
+
+    def forw_bfs(self, start, end=None):
+        """
+        Returns a list of nodes in some forward BFS order.
+
+        Starting from the start node the breadth first search proceeds along
+        outgoing edges.
+        """
+        return [node for node, step in self._iterbfs(start, end, forward=True)]
+
+    def back_bfs(self, start, end=None):
+        """
+        Returns a list of nodes in some backward BFS order.
+
+        Starting from the start node the breadth first search proceeds along
+        incoming edges.
+        """
+        return [node for node, step in self._iterbfs(start, end, forward=False)]
+
+    def forw_dfs(self, start, end=None):
+        """
+        Returns a list of nodes in some forward DFS order.
+
+        Starting with the start node the depth first search proceeds along
+        outgoing edges.
+        """
+        return list(self.iterdfs(start, end, forward=True))
+
+    def back_dfs(self, start, end=None):
+        """
+        Returns a list of nodes in some backward DFS order.
+
+        Starting from the start node the depth first search proceeds along
+        incoming edges.
+        """
+        return list(self.iterdfs(start, end, forward=False))
+
+    def connected(self):
+        """
+        Returns :py:data:`True` if the graph's every node can be reached from every
+        other node.
+        """
+        node_list = self.node_list()
+        for node in node_list:
+            bfs_list = self.forw_bfs(node)
+            if len(bfs_list) != len(node_list):
+                return False
+        return True
+
+    def clust_coef(self, node):
+        """
+        Computes and returns the local clustering coefficient of node.  The
+        local cluster coefficient is proportion of the actual number of edges between
+        neighbours of node and the maximum number of edges between those neighbours.
+
+        See <http://en.wikipedia.org/wiki/Clustering_coefficient#Local_clustering_coefficient>
+        for a formal definition.
+        """
+        num = 0
+        nbr_set = set(self.out_nbrs(node))
+
+        if node in nbr_set:
+            nbr_set.remove(node) # loop defense
+
+        for nbr in nbr_set:
+            sec_set = set(self.out_nbrs(nbr))
+            if nbr in sec_set:
+                sec_set.remove(nbr) # loop defense
+            num += len(nbr_set & sec_set)
+
+        nbr_num = len(nbr_set)
+        if nbr_num:
+            clust_coef = float(num) / (nbr_num * (nbr_num - 1))
+        else:
+            clust_coef = 0.0
+        return clust_coef
+
+    def get_hops(self, start, end=None, forward=True):
+        """
+        Computes the hop distance to all nodes centered around a specified node.
+
+        First order neighbours are at hop 1, their neigbours are at hop 2 etc.
+        Uses :py:meth:`forw_bfs` or :py:meth:`back_bfs` depending on the value of the forward
+        parameter.  If the distance between all neighbouring nodes is 1 the hop
+        number corresponds to the shortest distance between the nodes.
+
+        :param start: the starting node
+        :param end: ending node (optional). When not specified will search the whole graph.
+        :param forward: directionality parameter (optional). If C{True} (default) it uses L{forw_bfs} otherwise L{back_bfs}.
+        :return: returns a list of tuples where each tuple contains the node and the hop.
+
+        Typical usage::
+
+            >>> print (graph.get_hops(1, 8))
+            >>> [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)]
+            # node 1 is at 0 hops
+            # node 2 is at 1 hop
+            # ...
+            # node 8 is at 5 hops
+        """
+        if forward:
+            return list(self._iterbfs(start=start, end=end, forward=True))
+        else:
+            return list(self._iterbfs(start=start, end=end, forward=False))
diff --git a/python/altgraph/altgraph/GraphAlgo.py b/python/altgraph/altgraph/GraphAlgo.py
new file mode 100644
index 000000000..9e6fff2b1
--- /dev/null
+++ b/python/altgraph/altgraph/GraphAlgo.py
@@ -0,0 +1,147 @@
+'''
+altgraph.GraphAlgo - Graph algorithms
+=====================================
+'''
+from altgraph import GraphError
+
+def dijkstra(graph, start, end=None):
+    """
+    Dijkstra's algorithm for shortest paths
+
+    `David Eppstein, UC Irvine, 4 April 2002 <http://www.ics.uci.edu/~eppstein/161/python/>`_
+
+    `Python Cookbook Recipe <http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/119466>`_
+
+    Find shortest paths from the  start node to all nodes nearer than or equal to the end node.
+
+    Dijkstra's algorithm is only guaranteed to work correctly when all edge lengths are positive.
+    This code does not verify this property for all edges (only the edges examined until the end
+    vertex is reached), but will correctly compute shortest paths even for some graphs with negative
+    edges, and will raise an exception if it discovers that a negative edge has caused it to make a mistake.
+
+    *Adapted to altgraph by Istvan Albert, Pennsylvania State University - June, 9 2004*
+
+    """
+    D = {}    # dictionary of final distances
+    P = {}    # dictionary of predecessors
+    Q = _priorityDictionary()    # estimated distances of non-final vertices
+    Q[start] = 0
+
+    for v in Q:
+        D[v] = Q[v]
+        if v == end: break
+
+        for w in graph.out_nbrs(v):
+            edge_id  = graph.edge_by_node(v,w)
+            vwLength = D[v] + graph.edge_data(edge_id)
+            if w in D:
+                if vwLength < D[w]:
+                    raise GraphError("Dijkstra: found better path to already-final vertex")
+            elif w not in Q or vwLength < Q[w]:
+                Q[w] = vwLength
+                P[w] = v
+
+    return (D,P)
+
+def shortest_path(graph, start, end):
+    """
+    Find a single shortest path from the given start node to the given end node.
+    The input has the same conventions as dijkstra(). The output is a list of the nodes
+    in order along the shortest path.
+
+    **Note that the distances must be stored in the edge data as numeric data**
+    """
+
+    D,P = dijkstra(graph, start, end)
+    Path = []
+    while 1:
+        Path.append(end)
+        if end == start: break
+        end = P[end]
+    Path.reverse()
+    return Path
+
+#
+# Utility classes and functions
+#
+class _priorityDictionary(dict):
+    '''
+    Priority dictionary using binary heaps (internal use only)
+
+    David Eppstein, UC Irvine, 8 Mar 2002
+
+    Implements a data structure that acts almost like a dictionary, with two modifications:
+        1. D.smallest() returns the value x minimizing D[x].  For this to work correctly,
+            all values D[x] stored in the dictionary must be comparable.
+        2. iterating "for x in D" finds and removes the items from D in sorted order.
+            Each item is not removed until the next item is requested, so D[x] will still
+            return a useful value until the next iteration of the for-loop.
+            Each operation takes logarithmic amortized time.
+    '''
+    def __init__(self):
+        '''
+        Initialize priorityDictionary by creating binary heap of pairs (value,key).
+        Note that changing or removing a dict entry will not remove the old pair from the heap
+        until it is found by smallest() or until the heap is rebuilt.
+        '''
+        self.__heap = []
+        dict.__init__(self)
+
+    def smallest(self):
+        '''
+        Find smallest item after removing deleted items from front of heap.
+        '''
+        if len(self) == 0:
+            raise IndexError("smallest of empty priorityDictionary")
+        heap = self.__heap
+        while heap[0][1] not in self or self[heap[0][1]] != heap[0][0]:
+            lastItem = heap.pop()
+            insertionPoint = 0
+            while 1:
+                smallChild = 2*insertionPoint+1
+                if smallChild+1 < len(heap) and heap[smallChild] > heap[smallChild+1] :
+                    smallChild += 1
+                if smallChild >= len(heap) or lastItem <= heap[smallChild]:
+                    heap[insertionPoint] = lastItem
+                    break
+                heap[insertionPoint] = heap[smallChild]
+                insertionPoint = smallChild
+        return heap[0][1]
+
+    def __iter__(self):
+        '''
+        Create destructive sorted iterator of priorityDictionary.
+        '''
+        def iterfn():
+            while len(self) > 0:
+                x = self.smallest()
+                yield x
+                del self[x]
+        return iterfn()
+
+    def __setitem__(self,key,val):
+        '''
+        Change value stored in dictionary and add corresponding pair to heap.
+        Rebuilds the heap if the number of deleted items gets large, to avoid memory leakage.
+        '''
+        dict.__setitem__(self,key,val)
+        heap = self.__heap
+        if len(heap) > 2 * len(self):
+            self.__heap = [(v,k) for k,v in self.iteritems()]
+            self.__heap.sort()  # builtin sort probably faster than O(n)-time heapify
+        else:
+            newPair = (val,key)
+            insertionPoint = len(heap)
+            heap.append(None)
+            while insertionPoint > 0 and newPair < heap[(insertionPoint-1)//2]:
+                heap[insertionPoint] = heap[(insertionPoint-1)//2]
+                insertionPoint = (insertionPoint-1)//2
+            heap[insertionPoint] = newPair
+
+    def setdefault(self,key,val):
+        '''
+        Reimplement setdefault to pass through our customized __setitem__.
+        '''
+        if key not in self:
+            self[key] = val
+        return self[key]
diff --git a/python/altgraph/altgraph/GraphStat.py b/python/altgraph/altgraph/GraphStat.py
new file mode 100644
index 000000000..25fc46c2d
--- /dev/null
+++ b/python/altgraph/altgraph/GraphStat.py
@@ -0,0 +1,73 @@
+'''
+altgraph.GraphStat - Functions providing various graph statistics
+=================================================================
+'''
+import sys
+
+def degree_dist(graph, limits=(0,0), bin_num=10, mode='out'):
+    '''
+    Computes the degree distribution for a graph.
+
+    Returns a list of tuples where the first element of the tuple is the center of the bin
+    representing a range of degrees and the second element of the tuple are the number of nodes
+    with the degree falling in the range.
+
+    Example::
+
+        ....
+    '''
+
+    deg = []
+    if mode == 'inc':
+        get_deg = graph.inc_degree
+    else:
+        get_deg = graph.out_degree
+
+    for node in graph:
+        deg.append( get_deg(node) )
+
+    if not deg:
+        return []
+
+    results = _binning(values=deg, limits=limits, bin_num=bin_num)
+
+    return results
+
+_EPS = 1.0/(2.0**32)
+def _binning(values, limits=(0,0), bin_num=10):
+    '''
+    Bins data that falls between certain limits, if the limits are (0, 0) the
+    minimum and maximum values are used.
+
+    Returns a list of tuples where the first element of the tuple is the center of the bin
+    and the second element of the tuple are the counts.
+    '''
+    if limits == (0, 0):
+        min_val, max_val = min(values) - _EPS, max(values) + _EPS
+    else:
+        min_val, max_val = limits
+
+    # get bin size
+    bin_size = (max_val - min_val)/float(bin_num)
+    bins = [0] * (bin_num)
+
+    # will ignore these outliers for now
+    out_points = 0
+    for value in values:
+        try:
+            if (value - min_val) < 0:
+                out_points += 1
+            else:
+                index = int((value - min_val)/float(bin_size))
+                bins[index] += 1
+        except IndexError:
+            out_points += 1
+
+    # make it ready for an x,y plot
+    result = []
+    center = (bin_size/2) + min_val
+    for i, y in enumerate(bins):
+        x = center + bin_size * i
+        result.append( (x,y) )
+
+    return result
diff --git a/python/altgraph/altgraph/GraphUtil.py b/python/altgraph/altgraph/GraphUtil.py
new file mode 100644
index 000000000..d3b6acd74
--- /dev/null
+++ b/python/altgraph/altgraph/GraphUtil.py
@@ -0,0 +1,137 @@
+'''
+altgraph.GraphUtil - Utility classes and functions
+==================================================
+'''
+
+import random
+from collections import deque
+from altgraph import Graph
+from altgraph import GraphError
+
+def generate_random_graph(node_num, edge_num, self_loops=False, multi_edges=False):
+    '''
+    Generates and returns a :py:class:`~altgraph.Graph.Graph` instance with *node_num* nodes
+    randomly connected by *edge_num* edges.
+    '''
+    g = Graph.Graph()
+
+    if not multi_edges:
+        if self_loops:
+            max_edges = node_num * node_num
+        else:
+            max_edges = node_num * (node_num-1)
+
+        if edge_num > max_edges:
+            raise GraphError("inconsistent arguments to 'generate_random_graph'")
+
+    nodes = range(node_num)
+
+    for node in nodes:
+        g.add_node(node)
+
+    while 1:
+        head = random.choice(nodes)
+        tail = random.choice(nodes)
+
+        # loop defense
+        if head == tail and not self_loops:
+            continue
+
+        # multiple edge defense
+        if g.edge_by_node(head,tail) is not None and not multi_edges:
+            continue
+
+        # add the edge
+        g.add_edge(head, tail)
+        if g.number_of_edges() >= edge_num:
+            break
+
+    return g
+
+def generate_scale_free_graph(steps, growth_num, self_loops=False, multi_edges=False):
+    '''
+    Generates and returns a :py:class:`~altgraph.Graph.Graph` instance that will have *steps* \* *growth_num* nodes
+    and a scale free (powerlaw) connectivity. Starting with a fully connected graph with *growth_num* nodes
+    at every step *growth_num* nodes are added to the graph and are connected to existing nodes with
+    a probability proportional to the degree of these existing nodes.
+    '''
+    # FIXME: The code doesn't seem to do what the documentation claims.
+    graph = Graph.Graph()
+
+    # initialize the graph
+    store = []
+    for i in range(growth_num):
+        #store   += [ i ] * (growth_num - 1)
+        for j in range(i + 1, growth_num):
+            store.append(i)
+            store.append(j)
+            graph.add_edge(i,j)
+
+    # generate
+    for node in range(growth_num, steps * growth_num):
+        graph.add_node(node)
+        while ( graph.out_degree(node) < growth_num ):
+            nbr = random.choice(store)
+
+            # loop defense
+            if node == nbr and not self_loops:
+                continue
+
+            # multi edge defense
+            if graph.edge_by_node(node, nbr) and not multi_edges:
+                continue
+
+            graph.add_edge(node, nbr)
+
+
+        for nbr in graph.out_nbrs(node):
+            store.append(node)
+            store.append(nbr)
+
+    return graph
+
+def filter_stack(graph, head, filters):
+    """
+    Perform a walk in a depth-first order starting
+    at *head*.
+
+    Returns (visited, removes, orphans).
+
+    * visited: the set of visited nodes
+    * removes: the list of nodes where the node
+      data does not all *filters*
+    * orphans: tuples of (last_good, node),
+      where node is not in removes, is directly
+      reachable from a node in *removes* and
+      *last_good* is the closest upstream node that is not
+      in *removes*.
+    """
+
+    visited, removes, orphans = set([head]), set(), set()
+    stack = deque([(head, head)])
+    get_data = graph.node_data
+    get_edges = graph.out_edges
+    get_tail = graph.tail
+
+    while stack:
+        last_good, node = stack.pop()
+        data = get_data(node)
+        if data is not None:
+            for filtfunc in filters:
+                if not filtfunc(data):
+                    removes.add(node)
+                    break
+            else:
+                last_good = node
+        for edge in get_edges(node):
+            tail = get_tail(edge)
+            if last_good is not node:
+                orphans.add((last_good, tail))
+            if tail not in visited:
+                visited.add(tail)
+                stack.append((last_good, tail))
+
+    orphans = [(last_good, tail) for (last_good, tail) in orphans if tail not in removes]
+    #orphans.sort()
+
+    return visited, removes, orphans
diff --git a/python/altgraph/altgraph/ObjectGraph.py b/python/altgraph/altgraph/ObjectGraph.py
new file mode 100644
index 000000000..d07f51b68
--- /dev/null
+++ b/python/altgraph/altgraph/ObjectGraph.py
@@ -0,0 +1,202 @@
+"""
+altgraph.ObjectGraph - Graph of objects with an identifier
+==========================================================
+
+A graph of objects that have a "graphident" attribute.
+graphident is the key for the object in the graph
+"""
+
+from altgraph import GraphError
+from altgraph.Graph import Graph
+from altgraph.GraphUtil import filter_stack
+
+class ObjectGraph(object):
+    """
+    A graph of objects that have a "graphident" attribute.
+    graphident is the key for the object in the graph
+    """
+    def __init__(self, graph=None, debug=0):
+        if graph is None:
+            graph = Graph()
+        self.graphident = self
+        self.graph = graph
+        self.debug = debug
+        self.indent = 0
+        graph.add_node(self, None)
+
+    def __repr__(self):
+        return '<%s>' % (type(self).__name__,)
+
+    def flatten(self, condition=None, start=None):
+        """
+        Iterate over the subgraph that is entirely reachable by condition
+        starting from the given start node or the ObjectGraph root
+        """
+        if start is None:
+            start = self
+        start = self.getRawIdent(start)
+        return self.graph.iterdata(start=start, condition=condition)
+
+    def nodes(self):
+        for ident in self.graph:
+            node = self.graph.node_data(ident)
+            if node is not None:
+                yield self.graph.node_data(ident)
+
+
+    def get_edges(self, node):
+        start = self.getRawIdent(node)
+        _, _, outraw, incraw = self.graph.describe_node(start)
+        def iter_edges(lst, n):
+            seen = set()
+            for tpl in (self.graph.describe_edge(e) for e in lst):
+                ident = tpl[n]
+                if ident not in seen:
+                    yield self.findNode(ident)
+                    seen.add(ident)
+        return iter_edges(outraw, 3), iter_edges(incraw, 2)
+
+    def edgeData(self, fromNode, toNode):
+        start = self.getRawIdent(fromNode)
+        stop = self.getRawIdent(toNode)
+        edge = self.graph.edge_by_node(start, stop)
+        return self.graph.edge_data(edge)
+
+    def updateEdgeData(self, fromNode, toNode, edgeData):
+        start = self.getRawIdent(fromNode)
+        stop = self.getRawIdent(toNode)
+        edge = self.graph.edge_by_node(start, stop)
+        self.graph.update_edge_data(edge, edgeData)
+
+    def filterStack(self, filters):
+        """
+        Filter the ObjectGraph in-place by removing all edges to nodes that
+        do not match every filter in the given filter list
+
+        Returns a tuple containing the number of: (nodes_visited, nodes_removed, nodes_orphaned)
+        """
+        visited, removes, orphans = filter_stack(self.graph, self, filters)
+
+        for last_good, tail in orphans:
+            self.graph.add_edge(last_good, tail, edge_data='orphan')
+
+        for node in removes:
+            self.graph.hide_node(node)
+
+        return len(visited)-1, len(removes), len(orphans)
+
+    def removeNode(self, node):
+        """
+        Remove the given node from the graph if it exists
+        """
+        ident = self.getIdent(node)
+        if ident is not None:
+            self.graph.hide_node(ident)
+
+    def removeReference(self, fromnode, tonode):
+        """
+        Remove all edges from fromnode to tonode
+        """
+        if fromnode is None:
+            fromnode = self
+        fromident = self.getIdent(fromnode)
+        toident = self.getIdent(tonode)
+        if fromident is not None and toident is not None:
+            while True:
+                edge = self.graph.edge_by_node(fromident, toident)
+                if edge is None:
+                    break
+                self.graph.hide_edge(edge)
+
+    def getIdent(self, node):
+        """
+        Get the graph identifier for a node
+        """
+        ident = self.getRawIdent(node)
+        if ident is not None:
+            return ident
+        node = self.findNode(node)
+        if node is None:
+            return None
+        return node.graphident
+
+    def getRawIdent(self, node):
+        """
+        Get the identifier for a node object
+        """
+        if node is self:
+            return node
+        ident = getattr(node, 'graphident', None)
+        return ident
+
+    def __contains__(self, node):
+        return self.findNode(node) is not None
+
+    def findNode(self, node):
+        """
+        Find the node on the graph
+        """
+        ident = self.getRawIdent(node)
+        if ident is None:
+            ident = node
+        try:
+            return self.graph.node_data(ident)
+        except KeyError:
+            return None
+
+    def addNode(self, node):
+        """
+        Add a node to the graph referenced by the root
+        """
+        self.msg(4, "addNode", node)
+
+        try:
+            self.graph.restore_node(node.graphident)
+        except GraphError:
+            self.graph.add_node(node.graphident, node)
+
+    def createReference(self, fromnode, tonode, edge_data=None):
+        """
+        Create a reference from fromnode to tonode
+        """
+        if fromnode is None:
+            fromnode = self
+        fromident, toident = self.getIdent(fromnode), self.getIdent(tonode)
+        if fromident is None or toident is None:
+            return
+        self.msg(4, "createReference", fromnode, tonode, edge_data)
+        self.graph.add_edge(fromident, toident, edge_data=edge_data)
+
+    def createNode(self, cls, name, *args, **kw):
+        """
+        Add a node of type cls to the graph if it does not already exist
+        by the given name
+        """
+        m = self.findNode(name)
+        if m is None:
+            m = cls(name, *args, **kw)
+            self.addNode(m)
+        return m
+
+    def msg(self, level, s, *args):
+        """
+        Print a debug message with the given level
+        """
+        if s and level <= self.debug:
+            print ("%s%s %s" % ("  " * self.indent, s, ' '.join(map(repr, args))))
+
+    def msgin(self, level, s, *args):
+        """
+        Print a debug message and indent
+        """
+        if level <= self.debug:
+            self.msg(level, s, *args)
+            self.indent = self.indent + 1
+
+    def msgout(self, level, s, *args):
+        """
+        Dedent and print a debug message
+        """
+        if level <= self.debug:
+            self.indent = self.indent - 1
+            self.msg(level, s, *args)
diff --git a/python/altgraph/altgraph/__init__.py b/python/altgraph/altgraph/__init__.py
new file mode 100644
index 000000000..9f72c18e5
--- /dev/null
+++ b/python/altgraph/altgraph/__init__.py
@@ -0,0 +1,135 @@
+'''
+altgraph - a python graph library
+=================================
+
+altgraph is a fork of `graphlib <http://pygraphlib.sourceforge.net>`_ tailored
+to use newer Python 2.3+ features, including additional support used by the
+py2app suite (modulegraph and macholib, specifically).
+
+altgraph is a python based graph (network) representation and manipulation package.
+It has started out as an extension to the `graph_lib module <http://www.ece.arizona.edu/~denny/python_nest/graph_lib_1.0.1.html>`_
+written by Nathan Denny it has been significantly optimized and expanded.
+
+The :class:`altgraph.Graph.Graph` class is loosely modeled after the `LEDA <http://www.algorithmic-solutions.com/enleda.htm>`_
+(Library of Efficient Datatypes)  representation. The library
+includes methods for constructing graphs, BFS and DFS traversals,
+topological sort, finding connected components, shortest paths as well as a number
+graph statistics functions. The library can also visualize graphs
+via `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_.
+
+The package contains the following modules:
+
+    -  the :py:mod:`altgraph.Graph` module contains the :class:`~altgraph.Graph.Graph` class that stores the graph data
+
+    -  the :py:mod:`altgraph.GraphAlgo` module implements graph algorithms operating on graphs (:py:class:`~altgraph.Graph.Graph`} instances)
+
+    -  the :py:mod:`altgraph.GraphStat` module contains functions for computing statistical measures on graphs
+
+    -  the :py:mod:`altgraph.GraphUtil` module contains functions for generating, reading and saving graphs
+
+    -  the :py:mod:`altgraph.Dot` module  contains functions for displaying graphs via `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_
+
+    -  the :py:mod:`altgraph.ObjectGraph` module implements a graph of objects with a unique identifier
+
+Installation
+------------
+
+Download and unpack the archive then type::
+
+    python setup.py install
+
+This will install the library in the default location. For instructions on
+how to customize the install procedure read the output of::
+
+    python setup.py --help install
+
+To verify that the code works run the test suite::
+
+    python setup.py test
+
+Example usage
+-------------
+
+Lets assume that we want to analyze the graph below (links to the full picture) GRAPH_IMG.
+Our script then might look the following way::
+
+    from altgraph import Graph, GraphAlgo, Dot
+
+    # these are the edges
+    edges = [ (1,2), (2,4), (1,3), (2,4), (3,4), (4,5), (6,5),
+        (6,14), (14,15), (6, 15),  (5,7), (7, 8), (7,13), (12,8),
+        (8,13), (11,12), (11,9), (13,11), (9,13), (13,10) ]
+
+    # creates the graph
+    graph = Graph.Graph()
+    for head, tail in edges:
+        graph.add_edge(head, tail)
+
+    # do a forward bfs from 1 at most to 20
+    print(graph.forw_bfs(1))
+
+This will print the nodes in some breadth first order::
+
+    [1, 2, 3, 4, 5, 7, 8, 13, 11, 10, 12, 9]
+
+If we wanted to get the hop-distance from node 1 to node 8
+we coud write::
+
+    print(graph.get_hops(1, 8))
+
+This will print the following::
+
+    [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)]
+
+Node 1 is at 0 hops since it is the starting node, nodes 2,3 are 1 hop away ...
+node 8 is 5 hops away. To find the shortest distance between two nodes you
+can use::
+
+    print(GraphAlgo.shortest_path(graph, 1, 12))
+
+It will print the nodes on one (if there are more) the shortest paths::
+
+    [1, 2, 4, 5, 7, 13, 11, 12]
+
+To display the graph we can use the GraphViz backend::
+
+    dot = Dot.Dot(graph)
+
+    # display the graph on the monitor
+    dot.display()
+
+    # save it in an image file
+    dot.save_img(file_name='graph', file_type='gif')
+
+
+
+..
+  @author: U{Istvan Albert<http://www.personal.psu.edu/staff/i/u/iua1/>}
+
+  @license:  MIT License
+
+  Copyright (c) 2004 Istvan Albert unless otherwise noted.
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+  and associated documentation files (the "Software"), to deal in the Software without restriction,
+  including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+  and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do
+  so.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+  PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+  FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+  @requires: Python 2.3 or higher
+
+  @newfield contributor: Contributors:
+  @contributor: U{Reka Albert <http://www.phys.psu.edu/~ralbert/>}
+
+'''
+import pkg_resources
+__version__ = pkg_resources.require('altgraph')[0].version
+
+class GraphError(ValueError):
+    pass
diff --git a/python/altgraph/altgraph_tests/__init__.py b/python/altgraph/altgraph_tests/__init__.py
new file mode 100644
index 000000000..6890389df
--- /dev/null
+++ b/python/altgraph/altgraph_tests/__init__.py
@@ -0,0 +1 @@
+""" altgraph tests """
diff --git a/python/altgraph/altgraph_tests/test_altgraph.py b/python/altgraph/altgraph_tests/test_altgraph.py
new file mode 100644
index 000000000..2ca6b251e
--- /dev/null
+++ b/python/altgraph/altgraph_tests/test_altgraph.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env py.test
+import os
+import sys
+
+from altgraph import Graph, GraphAlgo
+import unittest
+
+class BasicTests (unittest.TestCase):
+    def setUp(self):
+        self.edges = [
+            (1,2), (2,4), (1,3), (2,4), (3,4), (4,5), (6,5), (6,14), (14,15),
+            (6, 15), (5,7), (7, 8), (7,13), (12,8), (8,13), (11,12), (11,9),
+            (13,11), (9,13), (13,10)
+        ]
+
+        # these are the edges
+        self.store = {}
+        self.g = Graph.Graph()
+        for head, tail in self.edges:
+            self.store[head] = self.store[tail] = None
+            self.g.add_edge(head, tail)
+
+    def test_num_edges(self):
+        # check the parameters
+        self.assertEqual(self.g.number_of_nodes(), len(self.store))
+        self.assertEqual(self.g.number_of_edges(), len(self.edges))
+
+    def test_forw_bfs(self):
+        # do a forward bfs
+        self.assertEqual( self.g.forw_bfs(1),
+                [1, 2, 3, 4, 5, 7, 8, 13, 11, 10, 12, 9])
+
+
+    def test_get_hops(self):
+        # diplay the hops and hop numbers between nodes
+        self.assertEqual(self.g.get_hops(1, 8),
+                [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)])
+
+    def test_shortest_path(self):
+        self.assertEqual(GraphAlgo.shortest_path(self.g, 1, 12),
+                [1, 2, 4, 5, 7, 13, 11, 12])
+
+
+if __name__ == "__main__":  # pragma: no cover
+    unittest.main()
diff --git a/python/altgraph/altgraph_tests/test_dot.py b/python/altgraph/altgraph_tests/test_dot.py
new file mode 100644
index 000000000..83993dad5
--- /dev/null
+++ b/python/altgraph/altgraph_tests/test_dot.py
@@ -0,0 +1,370 @@
+import unittest
+import os
+
+from altgraph import Dot
+from altgraph import Graph
+from altgraph import GraphError
+
+
+class TestDot (unittest.TestCase):
+
+    def test_constructor(self):
+        g = Graph.Graph([
+                (1,2),
+                (1,3),
+                (1,4),
+                (2,4),
+                (2,6),
+                (2,7),
+                (7,4),
+                (6,1),
+            ]
+        )
+
+        dot = Dot.Dot(g)
+
+        self.assertEqual(dot.name, 'G')
+        self.assertEqual(dot.attr, {})
+        self.assertEqual(dot.temp_dot, 'tmp_dot.dot')
+        self.assertEqual(dot.temp_neo, 'tmp_neo.dot')
+        self.assertEqual(dot.dot, 'dot')
+        self.assertEqual(dot.dotty, 'dotty')
+        self.assertEqual(dot.neato, 'neato')
+        self.assertEqual(dot.type, 'digraph')
+
+        self.assertEqual(dot.nodes, dict([(x, {}) for x in g]))
+
+        edges = {}
+        for head in g:
+            edges[head] = {}
+            for tail in g.out_nbrs(head):
+                edges[head][tail] = {}
+
+        self.assertEqual(dot.edges[1], edges[1])
+        self.assertEqual(dot.edges, edges)
+
+
+        dot = Dot.Dot(g, nodes=[1,2],
+                edgefn=lambda node: list(sorted(g.out_nbrs(node)))[:-1],
+                nodevisitor=lambda node: {'label': node},
+                edgevisitor=lambda head, tail: {'label': (head, tail) },
+                name="testgraph",
+                dot='/usr/local/bin/dot',
+                dotty='/usr/local/bin/dotty',
+                neato='/usr/local/bin/neato',
+                graphtype="graph")
+
+        self.assertEqual(dot.name, 'testgraph')
+        self.assertEqual(dot.attr, {})
+        self.assertEqual(dot.temp_dot, 'tmp_dot.dot')
+        self.assertEqual(dot.temp_neo, 'tmp_neo.dot')
+        self.assertEqual(dot.dot, '/usr/local/bin/dot')
+        self.assertEqual(dot.dotty, '/usr/local/bin/dotty')
+        self.assertEqual(dot.neato, '/usr/local/bin/neato')
+        self.assertEqual(dot.type, 'graph')
+
+        self.assertEqual(dot.nodes, dict([(x, {'label': x}) for x in [1,2]]))
+
+        edges = {}
+        for head in [1,2]:
+            edges[head] = {}
+            for tail in list(sorted(g.out_nbrs(head)))[:-1]:
+                if tail not in [1,2]: continue
+                edges[head][tail] = {'label': (head, tail) }
+
+        self.assertEqual(dot.edges[1], edges[1])
+        self.assertEqual(dot.edges, edges)
+
+        self.assertRaises(GraphError, Dot.Dot, g, nodes=[1,2, 9])
+
+    def test_style(self):
+        g = Graph.Graph([])
+
+        dot = Dot.Dot(g)
+
+        self.assertEqual(dot.attr, {})
+
+        dot.style(key='value')
+        self.assertEqual(dot.attr, {'key': 'value'})
+
+        dot.style(key2='value2')
+        self.assertEqual(dot.attr, {'key2': 'value2'})
+
+    def test_node_style(self):
+        g = Graph.Graph([
+                (1,2),
+                (1,3),
+                (1,4),
+                (2,4),
+                (2,6),
+                (2,7),
+                (7,4),
+                (6,1),
+            ]
+        )
+
+        dot = Dot.Dot(g)
+
+        self.assertEqual(dot.nodes[1], {})
+
+        dot.node_style(1, key='value')
+        self.assertEqual(dot.nodes[1], {'key': 'value'})
+
+        dot.node_style(1, key2='value2')
+        self.assertEqual(dot.nodes[1], {'key2': 'value2'})
+        self.assertEqual(dot.nodes[2], {})
+
+        dot.all_node_style(key3='value3')
+        for n in g:
+            self.assertEqual(dot.nodes[n], {'key3': 'value3'})
+
+        self.assertTrue(9 not in dot.nodes)
+        dot.node_style(9, key='value')
+        self.assertEqual(dot.nodes[9], {'key': 'value'})
+
+    def test_edge_style(self):
+        g = Graph.Graph([
+                (1,2),
+                (1,3),
+                (1,4),
+                (2,4),
+                (2,6),
+                (2,7),
+                (7,4),
+                (6,1),
+            ]
+        )
+
+        dot = Dot.Dot(g)
+
+        self.assertEqual(dot.edges[1][2], {})
+        dot.edge_style(1,2, foo='bar')
+        self.assertEqual(dot.edges[1][2], {'foo': 'bar'})
+
+        dot.edge_style(1,2, foo2='2bar')
+        self.assertEqual(dot.edges[1][2], {'foo2': '2bar'})
+
+        self.assertEqual(dot.edges[1][3], {})
+
+        self.assertFalse(6 in dot.edges[1])
+        dot.edge_style(1,6, foo2='2bar')
+        self.assertEqual(dot.edges[1][6], {'foo2': '2bar'})
+
+        self.assertRaises(GraphError, dot.edge_style, 1, 9, a=1)
+        self.assertRaises(GraphError, dot.edge_style, 9, 1, a=1)
+
+
+    def test_iter(self):
+        g = Graph.Graph([
+                (1,2),
+                (1,3),
+                (1,4),
+                (2,4),
+                (2,6),
+                (2,7),
+                (7,4),
+                (6,1),
+            ]
+        )
+
+        dot = Dot.Dot(g)
+        dot.style(graph="foobar")
+        dot.node_style(1, key='value')
+        dot.node_style(2, key='another', key2='world')
+        dot.edge_style(1,4, key1='value1', key2='value2')
+        dot.edge_style(2,4, key1='valueA')
+
+        self.assertEqual(list(iter(dot)), list(dot.iterdot()))
+
+        for item in dot.iterdot():
+            self.assertTrue(isinstance(item, str))
+
+        first = list(dot.iterdot())[0]
+        self.assertEqual(first, "digraph %s {\n"%(dot.name,))
+
+        dot.type = 'graph'
+        first = list(dot.iterdot())[0]
+        self.assertEqual(first, "graph %s {\n"%(dot.name,))
+
+        dot.type = 'foo'
+        self.assertRaises(GraphError, list, dot.iterdot())
+        dot.type = 'digraph'
+
+        self.assertEqual(list(dot), [
+            'digraph G {\n',
+              'graph="foobar";',
+              '\n',
+
+            '\t"1" [',
+              'key="value",',
+            '];\n',
+
+            '\t"2" [',
+              'key="another",',
+              'key2="world",',
+            '];\n',
+
+            '\t"3" [',
+            '];\n',
+
+            '\t"4" [',
+            '];\n',
+
+            '\t"6" [',
+            '];\n',
+
+            '\t"7" [',
+            '];\n',
+
+            '\t"1" -> "2" [',
+            '];\n',
+
+            '\t"1" -> "3" [',
+            '];\n',
+
+            '\t"1" -> "4" [',
+              'key1="value1",',
+              'key2="value2",',
+            '];\n',
+
+             '\t"2" -> "4" [',
+               'key1="valueA",',
+             '];\n',
+
+             '\t"2" -> "6" [',
+             '];\n',
+
+             '\t"2" -> "7" [',
+             '];\n',
+
+             '\t"6" -> "1" [',
+             '];\n',
+
+             '\t"7" -> "4" [',
+             '];\n',
+           '}\n'])
+
+
+    def test_save(self):
+        g = Graph.Graph([
+                (1,2),
+                (1,3),
+                (1,4),
+                (2,4),
+                (2,6),
+                (2,7),
+                (7,4),
+                (6,1),
+            ]
+        )
+
+        dot = Dot.Dot(g)
+        dot.style(graph="foobar")
+        dot.node_style(1, key='value')
+        dot.node_style(2, key='another', key2='world')
+        dot.edge_style(1,4, key1='value1', key2='value2')
+        dot.edge_style(2,4, key1='valueA')
+
+        fn = 'test_dot.dot'
+        self.assertTrue(not os.path.exists(fn))
+
+        try:
+            dot.save_dot(fn)
+
+            fp = open(fn, 'r')
+            data = fp.read()
+            fp.close()
+            self.assertEqual(data, ''.join(dot))
+
+        finally:
+            if os.path.exists(fn):
+                os.unlink(fn)
+
+
+    def test_img(self):
+        g = Graph.Graph([
+                (1,2),
+                (1,3),
+                (1,4),
+                (2,4),
+                (2,6),
+                (2,7),
+                (7,4),
+                (6,1),
+            ]
+        )
+
+        dot = Dot.Dot(g, dot='/usr/local/bin/!!dot', dotty='/usr/local/bin/!!dotty', neato='/usr/local/bin/!!neato')
+        dot.style(size='10,10', rankdir='RL', page='5, 5' , ranksep=0.75)
+        dot.node_style(1, label='BASE_NODE',shape='box', color='blue')
+        dot.node_style(2, style='filled', fillcolor='red')
+        dot.edge_style(1,4, style='dotted')
+        dot.edge_style(2,4, arrowhead='dot', label='binds', labelangle='90')
+
+        system_cmds = []
+        def fake_system(cmd):
+            system_cmds.append(cmd)
+            return None
+
+        try:
+            real_system = os.system
+            os.system = fake_system
+
+            system_cmds = []
+            dot.save_img('foo')
+            self.assertEqual(system_cmds, ['/usr/local/bin/!!dot -Tgif tmp_dot.dot -o foo.gif'])
+
+            system_cmds = []
+            dot.save_img('foo', file_type='jpg')
+            self.assertEqual(system_cmds, ['/usr/local/bin/!!dot -Tjpg tmp_dot.dot -o foo.jpg'])
+
+            system_cmds = []
+            dot.save_img('bar', file_type='jpg', mode='neato')
+            self.assertEqual(system_cmds, [
+                '/usr/local/bin/!!neato -o tmp_dot.dot tmp_neo.dot',
+                '/usr/local/bin/!!dot -Tjpg tmp_dot.dot -o bar.jpg',
+            ])
+
+            system_cmds = []
+            dot.display()
+            self.assertEqual(system_cmds, [
+                '/usr/local/bin/!!dotty tmp_dot.dot'
+            ])
+
+            system_cmds = []
+            dot.display(mode='neato')
+            self.assertEqual(system_cmds, [
+                '/usr/local/bin/!!neato -o tmp_dot.dot tmp_neo.dot',
+                '/usr/local/bin/!!dotty tmp_dot.dot'
+            ])
+
+        finally:
+            if os.path.exists(dot.temp_dot):
+                os.unlink(dot.temp_dot)
+            if os.path.exists(dot.temp_neo):
+                os.unlink(dot.temp_neo)
+            os.system = real_system
+
+        if os.path.exists('/usr/local/bin/dot') and os.path.exists('/usr/local/bin/neato'):
+            try:
+                dot.dot='/usr/local/bin/dot'
+                dot.neato='/usr/local/bin/neato'
+                self.assertFalse(os.path.exists('foo.gif'))
+                dot.save_img('foo')
+                self.assertTrue(os.path.exists('foo.gif'))
+                os.unlink('foo.gif')
+
+                self.assertFalse(os.path.exists('foo.gif'))
+                dot.save_img('foo', mode='neato')
+                self.assertTrue(os.path.exists('foo.gif'))
+                os.unlink('foo.gif')
+
+            finally:
+                if os.path.exists(dot.temp_dot):
+                    os.unlink(dot.temp_dot)
+                if os.path.exists(dot.temp_neo):
+                    os.unlink(dot.temp_neo)
+
+
+if __name__ == "__main__": # pragma: no cover
+    unittest.main()
diff --git a/python/altgraph/altgraph_tests/test_graph.py b/python/altgraph/altgraph_tests/test_graph.py
new file mode 100644
index 000000000..553549f5a
--- /dev/null
+++ b/python/altgraph/altgraph_tests/test_graph.py
@@ -0,0 +1,644 @@
+import unittest
+
+from altgraph import GraphError
+from altgraph.Graph import Graph
+
+class TestGraph (unittest.TestCase):
+
+    def test_nodes(self):
+        graph = Graph()
+
+        self.assertEqual(graph.node_list(), [])
+
+        o1 = object()
+        o1b = object()
+        o2 = object()
+        graph.add_node(1, o1)
+        graph.add_node(1, o1b)
+        graph.add_node(2, o2)
+        graph.add_node(3)
+
+        self.assertRaises(TypeError, graph.add_node, [])
+
+        self.assertTrue(graph.node_data(1) is o1)
+        self.assertTrue(graph.node_data(2) is o2)
+        self.assertTrue(graph.node_data(3) is None)
+
+        self.assertTrue(1 in graph)
+        self.assertTrue(2 in graph)
+        self.assertTrue(3 in graph)
+
+        self.assertEqual(graph.number_of_nodes(), 3)
+        self.assertEqual(graph.number_of_hidden_nodes(), 0)
+        self.assertEqual(graph.hidden_node_list(), [])
+        self.assertEqual(list(sorted(graph)), [1, 2, 3])
+
+        graph.hide_node(1)
+        graph.hide_node(2)
+        graph.hide_node(3)
+
+
+        self.assertEqual(graph.number_of_nodes(), 0)
+        self.assertEqual(graph.number_of_hidden_nodes(), 3)
+        self.assertEqual(list(sorted(graph.hidden_node_list())), [1, 2, 3])
+
+        self.assertFalse(1 in graph)
+        self.assertFalse(2 in graph)
+        self.assertFalse(3 in graph)
+
+        graph.add_node(1)
+        self.assertFalse(1 in graph)
+
+        graph.restore_node(1)
+        self.assertTrue(1 in graph)
+        self.assertFalse(2 in graph)
+        self.assertFalse(3 in graph)
+
+        graph.restore_all_nodes()
+        self.assertTrue(1 in graph)
+        self.assertTrue(2 in graph)
+        self.assertTrue(3 in graph)
+
+        self.assertEqual(list(sorted(graph.node_list())), [1, 2, 3])
+
+        v = graph.describe_node(1)
+        self.assertEqual(v, (1, o1, [], []))
+
+    def test_edges(self):
+        graph = Graph()
+        graph.add_node(1)
+        graph.add_node(2)
+        graph.add_node(3)
+        graph.add_node(4)
+        graph.add_node(5)
+
+        self.assertTrue(isinstance(graph.edge_list(), list))
+
+        graph.add_edge(1, 2)
+        graph.add_edge(4, 5, 'a')
+
+        self.assertRaises(GraphError, graph.add_edge, 'a', 'b', create_nodes=False)
+
+        self.assertEqual(graph.number_of_hidden_edges(), 0)
+        self.assertEqual(graph.number_of_edges(), 2)
+        e = graph.edge_by_node(1, 2)
+        self.assertTrue(isinstance(e, int))
+        graph.hide_edge(e)
+        self.assertEqual(graph.number_of_hidden_edges(), 1)
+        self.assertEqual(graph.number_of_edges(), 1)
+        e2 = graph.edge_by_node(1, 2)
+        self.assertTrue(e2 is None)
+
+        graph.restore_edge(e)
+        e2 = graph.edge_by_node(1, 2)
+        self.assertEqual(e, e2)
+        self.assertEqual(graph.number_of_hidden_edges(), 0)
+
+        self.assertEqual(graph.number_of_edges(), 2)
+
+        e1 = graph.edge_by_node(1, 2)
+        e2 = graph.edge_by_node(4, 5)
+        graph.hide_edge(e1)
+        graph.hide_edge(e2)
+
+        self.assertEqual(graph.number_of_edges(), 0)
+        graph.restore_all_edges()
+        self.assertEqual(graph.number_of_edges(), 2)
+
+        self.assertEqual(graph.edge_by_id(e1), (1,2))
+        self.assertRaises(GraphError, graph.edge_by_id, (e1+1)*(e2+1)+1)
+
+        self.assertEqual(list(sorted(graph.edge_list())), [e1, e2])
+
+        self.assertEqual(graph.describe_edge(e1), (e1, 1, 1, 2))
+        self.assertEqual(graph.describe_edge(e2), (e2, 'a', 4, 5))
+
+        self.assertEqual(graph.edge_data(e1), 1)
+        self.assertEqual(graph.edge_data(e2), 'a')
+
+        self.assertEqual(graph.head(e2), 4)
+        self.assertEqual(graph.tail(e2), 5)
+
+        graph.add_edge(1, 3)
+        graph.add_edge(1, 5)
+        graph.add_edge(4, 1)
+
+        self.assertEqual(list(sorted(graph.out_nbrs(1))), [2, 3, 5])
+        self.assertEqual(list(sorted(graph.inc_nbrs(1))), [4])
+        self.assertEqual(list(sorted(graph.inc_nbrs(5))), [1, 4])
+        self.assertEqual(list(sorted(graph.all_nbrs(1))), [2, 3, 4, 5])
+
+        graph.add_edge(5, 1)
+        self.assertEqual(list(sorted(graph.all_nbrs(5))), [1, 4])
+
+        self.assertEqual(graph.out_degree(1), 3)
+        self.assertEqual(graph.inc_degree(2), 1)
+        self.assertEqual(graph.inc_degree(5), 2)
+        self.assertEqual(graph.all_degree(5), 3)
+
+        v = graph.out_edges(4)
+        self.assertTrue(isinstance(v, list))
+        self.assertEqual(graph.edge_by_id(v[0]), (4, 5))
+
+        v = graph.out_edges(1)
+        for e in v:
+            self.assertEqual(graph.edge_by_id(e)[0], 1)
+
+        v = graph.inc_edges(1)
+        self.assertTrue(isinstance(v, list))
+        self.assertEqual(graph.edge_by_id(v[0]), (4, 1))
+
+        v = graph.inc_edges(5)
+        for e in v:
+            self.assertEqual(graph.edge_by_id(e)[1], 5)
+
+        v = graph.all_edges(5)
+        for e in v:
+            self.assertTrue(graph.edge_by_id(e)[1] == 5 or graph.edge_by_id(e)[0] == 5)
+
+        e1 = graph.edge_by_node(1, 2)
+        self.assertTrue(isinstance(e1, int))
+        graph.hide_node(1)
+        self.assertRaises(GraphError, graph.edge_by_node, 1, 2)
+        graph.restore_node(1)
+        e2 = graph.edge_by_node(1, 2)
+        self.assertEqual(e1, e2)
+
+
+
+    def test_toposort(self):
+        graph = Graph()
+        graph.add_node(1)
+        graph.add_node(2)
+        graph.add_node(3)
+        graph.add_node(4)
+        graph.add_node(5)
+
+        graph.add_edge(1, 2)
+        graph.add_edge(1, 3)
+        graph.add_edge(2, 4)
+        graph.add_edge(3, 5)
+
+        ok, result = graph.forw_topo_sort()
+        self.assertTrue(ok)
+        for idx in range(1, 6):
+            self.assertTrue(idx in result)
+
+        self.assertTrue(result.index(1) < result.index(2))
+        self.assertTrue(result.index(1) < result.index(3))
+        self.assertTrue(result.index(2) < result.index(4))
+        self.assertTrue(result.index(3) < result.index(5))
+
+        ok, result = graph.back_topo_sort()
+        self.assertTrue(ok)
+        for idx in range(1, 6):
+            self.assertTrue(idx in result)
+        self.assertTrue(result.index(2) < result.index(1))
+        self.assertTrue(result.index(3) < result.index(1))
+        self.assertTrue(result.index(4) < result.index(2))
+        self.assertTrue(result.index(5) < result.index(3))
+
+
+        # Same graph as before, but with edges
+        # reversed, which means we should get
+        # the same results as before if using
+        # back_topo_sort rather than forw_topo_sort
+        # (and v.v.)
+
+        graph = Graph()
+        graph.add_node(1)
+        graph.add_node(2)
+        graph.add_node(3)
+        graph.add_node(4)
+        graph.add_node(5)
+
+        graph.add_edge(2, 1)
+        graph.add_edge(3, 1)
+        graph.add_edge(4, 2)
+        graph.add_edge(5, 3)
+
+        ok, result = graph.back_topo_sort()
+        self.assertTrue(ok)
+        for idx in range(1, 6):
+            self.assertTrue(idx in result)
+
+        self.assertTrue(result.index(1) < result.index(2))
+        self.assertTrue(result.index(1) < result.index(3))
+        self.assertTrue(result.index(2) < result.index(4))
+        self.assertTrue(result.index(3) < result.index(5))
+
+        ok, result = graph.forw_topo_sort()
+        self.assertTrue(ok)
+        for idx in range(1, 6):
+            self.assertTrue(idx in result)
+        self.assertTrue(result.index(2) < result.index(1))
+        self.assertTrue(result.index(3) < result.index(1))
+        self.assertTrue(result.index(4) < result.index(2))
+        self.assertTrue(result.index(5) < result.index(3))
+
+
+        # Create a cycle
+        graph.add_edge(1, 5)
+        ok, result = graph.forw_topo_sort()
+        self.assertFalse(ok)
+        ok, result = graph.back_topo_sort()
+        self.assertFalse(ok)
+
+    def test_bfs_subgraph(self):
+        graph = Graph()
+        graph.add_edge(1, 2)
+        graph.add_edge(1, 4)
+        graph.add_edge(2, 4)
+        graph.add_edge(4, 8)
+        graph.add_edge(4, 9)
+        graph.add_edge(4, 10)
+        graph.add_edge(8, 10)
+
+        subgraph = graph.forw_bfs_subgraph(10)
+        self.assertTrue(isinstance(subgraph, Graph))
+        self.assertEqual(subgraph.number_of_nodes(), 1)
+        self.assertTrue(10 in subgraph)
+        self.assertEqual(subgraph.number_of_edges(), 0)
+
+        subgraph = graph.forw_bfs_subgraph(4)
+        self.assertTrue(isinstance(subgraph, Graph))
+        self.assertEqual(subgraph.number_of_nodes(), 4)
+        self.assertTrue(4 in subgraph)
+        self.assertTrue(8 in subgraph)
+        self.assertTrue(9 in subgraph)
+        self.assertTrue(10 in subgraph)
+        self.assertEqual(subgraph.number_of_edges(), 4)
+        e = subgraph.edge_by_node(4, 8)
+        e = subgraph.edge_by_node(4, 9)
+        e = subgraph.edge_by_node(4, 10)
+        e = subgraph.edge_by_node(8, 10)
+
+        # same graph as before, but switch around
+        # edges. This results in the same test results
+        # but now for back_bfs_subgraph rather than
+        # forw_bfs_subgraph
+
+        graph = Graph()
+        graph.add_edge(2, 1)
+        graph.add_edge(4, 1)
+        graph.add_edge(4, 2)
+        graph.add_edge(8, 4)
+        graph.add_edge(9, 4)
+        graph.add_edge(10, 4)
+        graph.add_edge(10, 8)
+
+        subgraph = graph.back_bfs_subgraph(10)
+        self.assertTrue(isinstance(subgraph, Graph))
+        self.assertEqual(subgraph.number_of_nodes(), 1)
+        self.assertTrue(10 in subgraph)
+        self.assertEqual(subgraph.number_of_edges(), 0)
+
+        subgraph = graph.back_bfs_subgraph(4)
+        self.assertTrue(isinstance(subgraph, Graph))
+        self.assertEqual(subgraph.number_of_nodes(), 4)
+        self.assertTrue(4 in subgraph)
+        self.assertTrue(8 in subgraph)
+        self.assertTrue(9 in subgraph)
+        self.assertTrue(10 in subgraph)
+        self.assertEqual(subgraph.number_of_edges(), 4)
+        e = subgraph.edge_by_node(4, 8)
+        e = subgraph.edge_by_node(4, 9)
+        e = subgraph.edge_by_node(4, 10)
+        e = subgraph.edge_by_node(8, 10)
+
+    def test_iterdfs(self):
+        graph = Graph()
+        graph.add_edge("1", "1.1")
+        graph.add_edge("1", "1.2")
+        graph.add_edge("1", "1.3")
+        graph.add_edge("1.1", "1.1.1")
+        graph.add_edge("1.1", "1.1.2")
+        graph.add_edge("1.2", "1.2.1")
+        graph.add_edge("1.2", "1.2.2")
+        graph.add_edge("1.2.2", "1.2.2.1")
+        graph.add_edge("1.2.2", "1.2.2.2")
+        graph.add_edge("1.2.2", "1.2.2.3")
+
+        result = list(graph.iterdfs("1"))
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1', '1.1', '1.1.2', '1.1.1'
+        ])
+        result = list(graph.iterdfs("1", "1.2.1"))
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1'
+        ])
+
+        result = graph.forw_dfs("1")
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1', '1.1', '1.1.2', '1.1.1'
+        ])
+        result = graph.forw_dfs("1", "1.2.1")
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1'
+        ])
+
+        graph = Graph()
+        graph.add_edge("1.1", "1")
+        graph.add_edge("1.2", "1")
+        graph.add_edge("1.3", "1")
+        graph.add_edge("1.1.1", "1.1")
+        graph.add_edge("1.1.2", "1.1")
+        graph.add_edge("1.2.1", "1.2")
+        graph.add_edge("1.2.2", "1.2")
+        graph.add_edge("1.2.2.1", "1.2.2")
+        graph.add_edge("1.2.2.2", "1.2.2")
+        graph.add_edge("1.2.2.3", "1.2.2")
+
+        result = list(graph.iterdfs("1", forward=False))
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1', '1.1', '1.1.2', '1.1.1'
+        ])
+        result = list(graph.iterdfs("1", "1.2.1", forward=False))
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1'
+        ])
+        result = graph.back_dfs("1")
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1', '1.1', '1.1.2', '1.1.1'
+        ])
+        result = graph.back_dfs("1", "1.2.1")
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1'
+        ])
+
+
+        # Introduce cyle:
+        graph.add_edge("1", "1.2")
+        result = list(graph.iterdfs("1", forward=False))
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1', '1.1', '1.1.2', '1.1.1'
+        ])
+
+        result = graph.back_dfs("1")
+        self.assertEqual(result, [
+            '1', '1.3', '1.2', '1.2.2', '1.2.2.3', '1.2.2.2',
+            '1.2.2.1', '1.2.1', '1.1', '1.1.2', '1.1.1'
+        ])
+
+
+    def test_iterdata(self):
+        graph = Graph()
+        graph.add_node("1", "I")
+        graph.add_node("1.1", "I.I")
+        graph.add_node("1.2", "I.II")
+        graph.add_node("1.3", "I.III")
+        graph.add_node("1.1.1", "I.I.I")
+        graph.add_node("1.1.2", "I.I.II")
+        graph.add_node("1.2.1", "I.II.I")
+        graph.add_node("1.2.2", "I.II.II")
+        graph.add_node("1.2.2.1", "I.II.II.I")
+        graph.add_node("1.2.2.2", "I.II.II.II")
+        graph.add_node("1.2.2.3", "I.II.II.III")
+
+        graph.add_edge("1", "1.1")
+        graph.add_edge("1", "1.2")
+        graph.add_edge("1", "1.3")
+        graph.add_edge("1.1", "1.1.1")
+        graph.add_edge("1.1", "1.1.2")
+        graph.add_edge("1.2", "1.2.1")
+        graph.add_edge("1.2", "1.2.2")
+        graph.add_edge("1.2.2", "1.2.2.1")
+        graph.add_edge("1.2.2", "1.2.2.2")
+        graph.add_edge("1.2.2", "1.2.2.3")
+
+        result = list(graph.iterdata("1", forward=True))
+        self.assertEqual(result, [
+            'I', 'I.III', 'I.II', 'I.II.II', 'I.II.II.III', 'I.II.II.II',
+            'I.II.II.I', 'I.II.I', 'I.I', 'I.I.II', 'I.I.I'
+        ])
+
+        result = list(graph.iterdata("1", end="1.2.1", forward=True))
+        self.assertEqual(result, [
+            'I', 'I.III', 'I.II', 'I.II.II', 'I.II.II.III', 'I.II.II.II',
+            'I.II.II.I', 'I.II.I'
+        ])
+
+        result = list(graph.iterdata("1", condition=lambda n: len(n) < 6, forward=True))
+        self.assertEqual(result, [
+            'I', 'I.III', 'I.II',
+            'I.I', 'I.I.I'
+        ])
+
+
+        # And the revese option:
+        graph = Graph()
+        graph.add_node("1", "I")
+        graph.add_node("1.1", "I.I")
+        graph.add_node("1.2", "I.II")
+        graph.add_node("1.3", "I.III")
+        graph.add_node("1.1.1", "I.I.I")
+        graph.add_node("1.1.2", "I.I.II")
+        graph.add_node("1.2.1", "I.II.I")
+        graph.add_node("1.2.2", "I.II.II")
+        graph.add_node("1.2.2.1", "I.II.II.I")
+        graph.add_node("1.2.2.2", "I.II.II.II")
+        graph.add_node("1.2.2.3", "I.II.II.III")
+
+        graph.add_edge("1.1", "1")
+        graph.add_edge("1.2", "1")
+        graph.add_edge("1.3", "1")
+        graph.add_edge("1.1.1", "1.1")
+        graph.add_edge("1.1.2", "1.1")
+        graph.add_edge("1.2.1", "1.2")
+        graph.add_edge("1.2.2", "1.2")
+        graph.add_edge("1.2.2.1", "1.2.2")
+        graph.add_edge("1.2.2.2", "1.2.2")
+        graph.add_edge("1.2.2.3", "1.2.2")
+
+        result = list(graph.iterdata("1", forward=False))
+        self.assertEqual(result, [
+            'I', 'I.III', 'I.II', 'I.II.II', 'I.II.II.III', 'I.II.II.II',
+            'I.II.II.I', 'I.II.I', 'I.I', 'I.I.II', 'I.I.I'
+        ])
+
+        result = list(graph.iterdata("1", end="1.2.1", forward=False))
+        self.assertEqual(result, [
+            'I', 'I.III', 'I.II', 'I.II.II', 'I.II.II.III', 'I.II.II.II',
+            'I.II.II.I', 'I.II.I'
+        ])
+
+        result = list(graph.iterdata("1", condition=lambda n: len(n) < 6, forward=False))
+        self.assertEqual(result, [
+            'I', 'I.III', 'I.II',
+            'I.I', 'I.I.I'
+        ])
+
+    def test_bfs(self):
+        graph = Graph()
+        graph.add_edge("1", "1.1")
+        graph.add_edge("1.1", "1.1.1")
+        graph.add_edge("1.1", "1.1.2")
+        graph.add_edge("1.1.2", "1.1.2.1")
+        graph.add_edge("1.1.2", "1.1.2.2")
+        graph.add_edge("1", "1.2")
+        graph.add_edge("1", "1.3")
+        graph.add_edge("1.2", "1.2.1")
+
+        self.assertEqual(graph.forw_bfs("1"),
+                ['1', '1.1', '1.2', '1.3', '1.1.1', '1.1.2', '1.2.1', '1.1.2.1', '1.1.2.2'])
+        self.assertEqual(graph.forw_bfs("1", "1.1.1"),
+                ['1', '1.1', '1.2', '1.3', '1.1.1'])
+
+
+        # And the "reverse" graph
+        graph = Graph()
+        graph.add_edge("1.1", "1")
+        graph.add_edge("1.1.1", "1.1")
+        graph.add_edge("1.1.2", "1.1")
+        graph.add_edge("1.1.2.1", "1.1.2")
+        graph.add_edge("1.1.2.2", "1.1.2")
+        graph.add_edge("1.2", "1")
+        graph.add_edge("1.3", "1")
+        graph.add_edge("1.2.1", "1.2")
+
+        self.assertEqual(graph.back_bfs("1"),
+                ['1', '1.1', '1.2', '1.3', '1.1.1', '1.1.2', '1.2.1', '1.1.2.1', '1.1.2.2'])
+        self.assertEqual(graph.back_bfs("1", "1.1.1"),
+                ['1', '1.1', '1.2', '1.3', '1.1.1'])
+
+
+
+        # check cycle handling
+        graph.add_edge("1", "1.2.1")
+        self.assertEqual(graph.back_bfs("1"),
+                ['1', '1.1', '1.2', '1.3', '1.1.1', '1.1.2', '1.2.1', '1.1.2.1', '1.1.2.2'])
+
+
+    def test_connected(self):
+        graph = Graph()
+        graph.add_node(1)
+        graph.add_node(2)
+        graph.add_node(3)
+        graph.add_node(4)
+
+        self.assertFalse(graph.connected())
+
+        graph.add_edge(1, 2)
+        graph.add_edge(3, 4)
+        self.assertFalse(graph.connected())
+
+        graph.add_edge(2, 3)
+        graph.add_edge(4, 1)
+        self.assertTrue(graph.connected())
+
+    def test_edges_complex(self):
+        g = Graph()
+        g.add_edge(1, 2)
+        e = g.edge_by_node(1,2)
+        g.hide_edge(e)
+        g.hide_node(2)
+        self.assertRaises(GraphError, g.restore_edge, e)
+
+        g.restore_all_edges()
+        self.assertRaises(GraphError, g.edge_by_id, e)
+
+    def test_clust_coef(self):
+        g = Graph()
+        g.add_edge(1, 2)
+        g.add_edge(1, 3)
+        g.add_edge(1, 4)
+        self.assertEqual(g.clust_coef(1), 0)
+
+        g.add_edge(2, 5)
+        g.add_edge(3, 5)
+        g.add_edge(4, 5)
+        self.assertEqual(g.clust_coef(1), 0)
+
+        g.add_edge(2, 3)
+        self.assertEqual(g.clust_coef(1), 1./6)
+        g.add_edge(2, 4)
+        self.assertEqual(g.clust_coef(1), 2./6)
+        g.add_edge(4, 2)
+        self.assertEqual(g.clust_coef(1), 3./6)
+
+        g.add_edge(2, 3)
+        g.add_edge(2, 4)
+        g.add_edge(3, 4)
+        g.add_edge(3, 2)
+        g.add_edge(4, 2)
+        g.add_edge(4, 3)
+        self.assertEqual(g.clust_coef(1), 1)
+
+
+    def test_get_hops(self):
+        graph = Graph()
+        graph.add_edge(1, 2)
+        graph.add_edge(1, 3)
+        graph.add_edge(2, 4)
+        graph.add_edge(4, 5)
+        graph.add_edge(5, 7)
+        graph.add_edge(7, 8)
+
+        self.assertEqual(graph.get_hops(1),
+            [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)])
+
+        self.assertEqual(graph.get_hops(1, 5),
+            [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3)])
+
+        graph.add_edge(5, 1)
+        graph.add_edge(7, 1)
+        graph.add_edge(7, 4)
+
+        self.assertEqual(graph.get_hops(1),
+            [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)])
+
+        # And the reverse graph
+        graph = Graph()
+        graph.add_edge(2, 1)
+        graph.add_edge(3, 1)
+        graph.add_edge(4, 2)
+        graph.add_edge(5, 4)
+        graph.add_edge(7, 5)
+        graph.add_edge(8, 7)
+
+        self.assertEqual(graph.get_hops(1, forward=False),
+            [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)])
+
+        self.assertEqual(graph.get_hops(1, 5, forward=False),
+            [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3)])
+
+        graph.add_edge(1, 5)
+        graph.add_edge(1, 7)
+        graph.add_edge(4, 7)
+
+        self.assertEqual(graph.get_hops(1, forward=False),
+            [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)])
+
+
+    def test_constructor(self):
+        graph = Graph(iter([
+                (1, 2),
+                (2, 3, 'a'),
+                (1, 3),
+                (3, 4),
+            ]))
+        self.assertEqual(graph.number_of_nodes(), 4)
+        self.assertEqual(graph.number_of_edges(), 4)
+        try:
+            graph.edge_by_node(1,2)
+            graph.edge_by_node(2,3)
+            graph.edge_by_node(1,3)
+            graph.edge_by_node(3,4)
+        except GraphError:
+            self.fail("Incorrect graph")
+
+        self.assertEqual(graph.edge_data(graph.edge_by_node(2, 3)), 'a')
+
+        self.assertRaises(GraphError, Graph, [(1,2,3,4)])
+
+if __name__ == "__main__": # pragma: no cover
+    unittest.main()
diff --git a/python/altgraph/altgraph_tests/test_graphstat.py b/python/altgraph/altgraph_tests/test_graphstat.py
new file mode 100644
index 000000000..b628b6f24
--- /dev/null
+++ b/python/altgraph/altgraph_tests/test_graphstat.py
@@ -0,0 +1,70 @@
+import unittest
+
+from altgraph import GraphStat
+from altgraph import Graph
+import sys
+
+class TestDegreesDist (unittest.TestCase):
+
+    def test_simple(self):
+        a = Graph.Graph()
+        self.assertEqual(GraphStat.degree_dist(a), [])
+
+        a.add_node(1)
+        a.add_node(2)
+        a.add_node(3)
+
+        self.assertEqual(GraphStat.degree_dist(a), GraphStat._binning([0, 0, 0]))
+
+        for x in range(100):
+            a.add_node(x)
+
+        for x in range(1, 100):
+            for y in range(1, 50):
+                if x % y == 0:
+                    a.add_edge(x, y)
+
+        counts_inc = []
+        counts_out = []
+        for n in a:
+            counts_inc.append(a.inc_degree(n))
+            counts_out.append(a.out_degree(n))
+
+        self.assertEqual(GraphStat.degree_dist(a), GraphStat._binning(counts_out))
+        self.assertEqual(GraphStat.degree_dist(a, mode='inc'), GraphStat._binning(counts_inc))
+
+class TestBinning (unittest.TestCase):
+    def test_simple(self):
+
+        # Binning [0, 100) into 10 bins
+        a = list(range(100))
+        out = GraphStat._binning(a, limits=(0, 100), bin_num=10)
+
+        self.assertEqual(out,
+                [ (x*1.0, 10) for x in range(5, 100, 10) ])
+
+
+        # Check that outliers are ignored.
+        a = list(range(100))
+        out = GraphStat._binning(a, limits=(0, 90), bin_num=9)
+
+        self.assertEqual(out,
+                [ (x*1.0, 10) for x in range(5, 90, 10) ])
+
+
+        out = GraphStat._binning(a, limits=(0, 100), bin_num=15)
+        binSize = 100 / 15.0
+        result = [0]*15
+        for i in range(100):
+            bin = int(i/binSize)
+            try:
+                result[bin] += 1
+            except IndexError:
+                pass
+
+        result = [ (i * binSize + binSize/2, result[i]) for i in range(len(result))]
+
+        self.assertEqual(result, out)
+
+if __name__ == "__main__": # pragma: no cover
+    unittest.main()
diff --git a/python/altgraph/altgraph_tests/test_graphutil.py b/python/altgraph/altgraph_tests/test_graphutil.py
new file mode 100644
index 000000000..c1166237c
--- /dev/null
+++ b/python/altgraph/altgraph_tests/test_graphutil.py
@@ -0,0 +1,140 @@
+import unittest
+from altgraph import GraphUtil
+from altgraph import Graph, GraphError
+
+class TestGraphUtil (unittest.TestCase):
+
+    def test_generate_random(self):
+        g =  GraphUtil.generate_random_graph(10, 50)
+        self.assertEqual(g.number_of_nodes(), 10)
+        self.assertEqual(g.number_of_edges(), 50)
+
+        seen = set()
+
+        for e in g.edge_list():
+            h, t = g.edge_by_id(e)
+            self.assertFalse(h == t)
+            self.assertTrue((h, t) not in seen)
+            seen.add((h, t))
+
+        g =  GraphUtil.generate_random_graph(5, 30, multi_edges=True)
+        self.assertEqual(g.number_of_nodes(), 5)
+        self.assertEqual(g.number_of_edges(), 30)
+
+        seen = set()
+
+        for e in g.edge_list():
+            h, t = g.edge_by_id(e)
+            self.assertFalse(h == t)
+            if (h, t) in seen:
+                break
+            seen.add((h, t))
+
+        else:
+            self.fail("no duplicates?")
+
+        g =  GraphUtil.generate_random_graph(5, 21, self_loops=True)
+        self.assertEqual(g.number_of_nodes(), 5)
+        self.assertEqual(g.number_of_edges(), 21)
+
+        seen = set()
+
+        for e in g.edge_list():
+            h, t = g.edge_by_id(e)
+            self.assertFalse((h, t) in seen)
+            if h == t:
+                break
+            seen.add((h, t))
+
+        else:
+            self.fail("no self loops?")
+
+        self.assertRaises(GraphError, GraphUtil.generate_random_graph, 5, 21)
+        g = GraphUtil.generate_random_graph(5, 21, True)
+        self.assertRaises(GraphError, GraphUtil.generate_random_graph, 5, 26, True)
+
+    def test_generate_scale_free(self):
+        graph = GraphUtil.generate_scale_free_graph(50, 10)
+        self.assertEqual(graph.number_of_nodes(), 500)
+
+        counts = {}
+        for node in graph:
+            degree = graph.inc_degree(node)
+            try:
+                counts[degree] += 1
+            except KeyError:
+                counts[degree] = 1
+
+        total_counts = sum(counts.values())
+        P = {}
+        for degree, count in counts.items():
+            P[degree] = count * 1.0 / total_counts
+
+        # XXX: use algoritm <http://stackoverflow.com/questions/3433486/how-to-do-exponential-and-logarithmic-curve-fitting-in-python-i-found-only-polyn>
+        # to check if P[degree] ~ degree ** G (for some G)
+
+        #print sorted(P.items())
+
+        #print sorted([(count, degree) for degree, count in counts.items()])
+
+        #self.fail("missing tests for GraphUtil.generate_scale_free_graph")
+
+    def test_filter_stack(self):
+        g = Graph.Graph()
+        g.add_node("1", "N.1")
+        g.add_node("1.1", "N.1.1")
+        g.add_node("1.1.1", "N.1.1.1")
+        g.add_node("1.1.2", "N.1.1.2")
+        g.add_node("1.1.3", "N.1.1.3")
+        g.add_node("1.1.1.1", "N.1.1.1.1")
+        g.add_node("1.1.1.2", "N.1.1.1.2")
+        g.add_node("1.1.2.1", "N.1.1.2.1")
+        g.add_node("1.1.2.2", "N.1.1.2.2")
+        g.add_node("1.1.2.3", "N.1.1.2.3")
+        g.add_node("2", "N.2")
+
+        g.add_edge("1", "1.1")
+        g.add_edge("1.1", "1.1.1")
+        g.add_edge("1.1", "1.1.2")
+        g.add_edge("1.1", "1.1.3")
+        g.add_edge("1.1.1", "1.1.1.1")
+        g.add_edge("1.1.1", "1.1.1.2")
+        g.add_edge("1.1.2", "1.1.2.1")
+        g.add_edge("1.1.2", "1.1.2.2")
+        g.add_edge("1.1.2", "1.1.2.3")
+
+        v, r, o =  GraphUtil.filter_stack(g, "1", [
+            lambda n: n != "N.1.1.1", lambda n: n != "N.1.1.2.3" ])
+
+        self.assertEqual(v,
+            set(["1", "1.1", "1.1.1", "1.1.2", "1.1.3",
+                "1.1.1.1", "1.1.1.2", "1.1.2.1", "1.1.2.2",
+                "1.1.2.3"]))
+        self.assertEqual(r, set([
+                "1.1.1", "1.1.2.3"]))
+
+        o.sort()
+        self.assertEqual(o,
+            [
+                ("1.1", "1.1.1.1"),
+                ("1.1", "1.1.1.2")
+            ])
+
+        v, r, o =  GraphUtil.filter_stack(g, "1", [
+            lambda n: n != "N.1.1.1", lambda n: n != "N.1.1.1.2" ])
+
+        self.assertEqual(v,
+            set(["1", "1.1", "1.1.1", "1.1.2", "1.1.3",
+                "1.1.1.1", "1.1.1.2", "1.1.2.1", "1.1.2.2",
+                "1.1.2.3"]))
+        self.assertEqual(r, set([
+                "1.1.1", "1.1.1.2"]))
+
+        self.assertEqual(o,
+            [
+                ("1.1", "1.1.1.1"),
+            ])
+
+
+if __name__ == "__main__": # pragma: no cover
+    unittest.main()
diff --git a/python/altgraph/altgraph_tests/test_object_graph.py b/python/altgraph/altgraph_tests/test_object_graph.py
new file mode 100644
index 000000000..9035607e7
--- /dev/null
+++ b/python/altgraph/altgraph_tests/test_object_graph.py
@@ -0,0 +1,349 @@
+import unittest
+import sys
+from altgraph.ObjectGraph import ObjectGraph
+from altgraph.Graph import Graph
+
+try:
+    from StringIO import StringIO
+except ImportError:
+    from io import StringIO
+
+
+class Node (object):
+    def __init__(self, graphident):
+        self.graphident = graphident
+
+class SubNode (Node):
+    pass
+
+class ArgNode (object):
+    def __init__(self, graphident, *args, **kwds):
+        self.graphident = graphident
+        self.args = args
+        self.kwds = kwds
+
+    def __repr__(self):
+        return '<ArgNode %s>'%(self.graphident,)
+
+class TestObjectGraph (unittest.TestCase):
+
+    def test_constructor(self):
+        graph = ObjectGraph()
+        self.assertTrue(isinstance(graph, ObjectGraph))
+
+        g = Graph()
+        graph = ObjectGraph(g)
+        self.assertTrue(graph.graph is g)
+        self.assertEqual(graph.debug, 0)
+        self.assertEqual(graph.indent, 0)
+
+        graph = ObjectGraph(debug=5)
+        self.assertEqual(graph.debug, 5)
+
+    def test_repr(self):
+        graph = ObjectGraph()
+        self.assertEqual(repr(graph), '<ObjectGraph>')
+
+
+    def testNodes(self):
+        graph = ObjectGraph()
+        n1 = Node("n1")
+        n2 = Node("n2")
+        n3 = Node("n3")
+        n4 = Node("n4")
+
+        n1b = Node("n1")
+
+        self.assertTrue(graph.getIdent(graph)  is graph)
+        self.assertTrue(graph.getRawIdent(graph)  is graph)
+
+        graph.addNode(n1)
+        graph.addNode(n2)
+        graph.addNode(n3)
+
+        self.assertTrue(n1 in graph)
+        self.assertFalse(n4 in graph)
+        self.assertTrue("n1" in graph)
+        self.assertFalse("n4" in graph)
+
+        self.assertTrue(graph.findNode(n1) is n1)
+        self.assertTrue(graph.findNode(n1b) is n1)
+        self.assertTrue(graph.findNode(n2) is n2)
+        self.assertTrue(graph.findNode(n4) is None)
+        self.assertTrue(graph.findNode("n1") is n1)
+        self.assertTrue(graph.findNode("n2") is n2)
+        self.assertTrue(graph.findNode("n4") is None)
+
+        self.assertEqual(graph.getRawIdent(n1), "n1")
+        self.assertEqual(graph.getRawIdent(n1b), "n1")
+        self.assertEqual(graph.getRawIdent(n4), "n4")
+        self.assertEqual(graph.getRawIdent("n1"), None)
+
+        self.assertEqual(graph.getIdent(n1), "n1")
+        self.assertEqual(graph.getIdent(n1b), "n1")
+        self.assertEqual(graph.getIdent(n4), "n4")
+        self.assertEqual(graph.getIdent("n1"), "n1")
+
+        self.assertTrue(n3 in graph)
+        graph.removeNode(n3)
+        self.assertTrue(n3 not in graph)
+        graph.addNode(n3)
+        self.assertTrue(n3 in graph)
+
+        n = graph.createNode(SubNode, "n1")
+        self.assertTrue(n is n1)
+
+        n = graph.createNode(SubNode, "n8")
+        self.assertTrue(isinstance(n, SubNode))
+        self.assertTrue(n in graph)
+        self.assertTrue(graph.findNode("n8") is n)
+
+        n = graph.createNode(ArgNode, "args", 1, 2, 3, a='a', b='b')
+        self.assertTrue(isinstance(n, ArgNode))
+        self.assertTrue(n in graph)
+        self.assertTrue(graph.findNode("args") is n)
+        self.assertEqual(n.args, (1, 2, 3))
+        self.assertEqual(n.kwds, {'a':'a', 'b':'b'})
+
+    def testEdges(self):
+        graph = ObjectGraph()
+        n1 = graph.createNode(ArgNode, "n1", 1)
+        n2 = graph.createNode(ArgNode, "n2", 1)
+        n3 = graph.createNode(ArgNode, "n3", 1)
+        n4 = graph.createNode(ArgNode, "n4", 1)
+
+        graph.createReference(n1, n2, "n1-n2")
+        graph.createReference("n1", "n3", "n1-n3")
+        graph.createReference("n2", n3)
+
+        g = graph.graph
+        e = g.edge_by_node("n1", "n2")
+        self.assertTrue(e is not None)
+        self.assertEqual(g.edge_data(e), "n1-n2")
+
+        e = g.edge_by_node("n1", "n3")
+        self.assertTrue(e is not None)
+        self.assertEqual(g.edge_data(e), "n1-n3")
+
+        e = g.edge_by_node("n2", "n3")
+        self.assertTrue(e is not None)
+        self.assertEqual(g.edge_data(e), None)
+
+        e = g.edge_by_node("n1", "n4")
+        self.assertTrue(e is None)
+
+        graph.removeReference(n1, n2)
+        e = g.edge_by_node("n1", "n2")
+        self.assertTrue(e is None)
+
+        graph.removeReference("n1", "n3")
+        e = g.edge_by_node("n1", "n3")
+        self.assertTrue(e is None)
+
+        graph.createReference(n1, n2, "foo")
+        e = g.edge_by_node("n1", "n2")
+        self.assertTrue(e is not None)
+        self.assertEqual(g.edge_data(e), "foo")
+
+
+    def test_flatten(self):
+        graph = ObjectGraph()
+        n1 = graph.createNode(ArgNode, "n1", 1)
+        n2 = graph.createNode(ArgNode, "n2", 2)
+        n3 = graph.createNode(ArgNode, "n3", 3)
+        n4 = graph.createNode(ArgNode, "n4", 4)
+        n5 = graph.createNode(ArgNode, "n5", 5)
+        n6 = graph.createNode(ArgNode, "n6", 6)
+        n7 = graph.createNode(ArgNode, "n7", 7)
+        n8 = graph.createNode(ArgNode, "n8", 8)
+
+        graph.createReference(graph, n1)
+        graph.createReference(graph, n7)
+        graph.createReference(n1, n2)
+        graph.createReference(n1, n4)
+        graph.createReference(n2, n3)
+        graph.createReference(n2, n5)
+        graph.createReference(n5, n6)
+        graph.createReference(n4, n6)
+        graph.createReference(n4, n2)
+
+        self.assertFalse(isinstance(graph.flatten(), list))
+
+        fl = list(graph.flatten())
+        self.assertTrue(n1 in fl)
+        self.assertTrue(n2 in fl)
+        self.assertTrue(n3 in fl)
+        self.assertTrue(n4 in fl)
+        self.assertTrue(n5 in fl)
+        self.assertTrue(n6 in fl)
+        self.assertTrue(n7 in fl)
+        self.assertFalse(n8 in fl)
+
+        fl = list(graph.flatten(start=n2))
+        self.assertFalse(n1 in fl)
+        self.assertTrue(n2 in fl)
+        self.assertTrue(n3 in fl)
+        self.assertFalse(n4 in fl)
+        self.assertTrue(n5 in fl)
+        self.assertTrue(n6 in fl)
+        self.assertFalse(n7 in fl)
+        self.assertFalse(n8 in fl)
+
+        graph.createReference(n1, n5)
+        fl = list(graph.flatten(lambda n: n.args[0] % 2 != 0))
+        self.assertTrue(n1 in fl)
+        self.assertFalse(n2 in fl)
+        self.assertFalse(n3 in fl)
+        self.assertFalse(n4 in fl)
+        self.assertTrue(n5 in fl)
+        self.assertFalse(n6 in fl)
+        self.assertTrue(n7 in fl)
+        self.assertFalse(n8 in fl)
+
+    def test_iter_nodes(self):
+        graph = ObjectGraph()
+        n1 = graph.createNode(ArgNode, "n1", 1)
+        n2 = graph.createNode(ArgNode, "n2", 2)
+        n3 = graph.createNode(ArgNode, "n3", 3)
+        n4 = graph.createNode(ArgNode, "n4", 4)
+        n5 = graph.createNode(ArgNode, "n5", 5)
+        n6 = graph.createNode(ArgNode, "n6", 5)
+
+        nodes = graph.nodes()
+        if sys.version[0] == '2':
+            self.assertTrue(hasattr(nodes, 'next'))
+        else:
+            self.assertTrue(hasattr(nodes, '__next__'))
+        self.assertTrue(hasattr(nodes, '__iter__'))
+
+        nodes = list(nodes)
+        self.assertEqual(len(nodes), 6)
+        self.assertTrue(n1 in nodes)
+        self.assertTrue(n2 in nodes)
+        self.assertTrue(n3 in nodes)
+        self.assertTrue(n4 in nodes)
+        self.assertTrue(n5 in nodes)
+        self.assertTrue(n6 in nodes)
+
+    def test_get_edges(self):
+        graph = ObjectGraph()
+        n1 = graph.createNode(ArgNode, "n1", 1)
+        n2 = graph.createNode(ArgNode, "n2", 2)
+        n3 = graph.createNode(ArgNode, "n3", 3)
+        n4 = graph.createNode(ArgNode, "n4", 4)
+        n5 = graph.createNode(ArgNode, "n5", 5)
+        n6 = graph.createNode(ArgNode, "n6", 5)
+
+        graph.createReference(n1, n2)
+        graph.createReference(n1, n3)
+        graph.createReference(n3, n1)
+        graph.createReference(n5, n1)
+        graph.createReference(n2, n4)
+        graph.createReference(n2, n5)
+        graph.createReference(n6, n2)
+
+        outs, ins = graph.get_edges(n1)
+
+        self.assertFalse(isinstance(outs, list))
+        self.assertFalse(isinstance(ins, list))
+
+        ins = list(ins)
+        outs = list(outs)
+
+
+        self.assertTrue(n1 not in outs)
+        self.assertTrue(n2 in outs)
+        self.assertTrue(n3 in outs)
+        self.assertTrue(n4 not in outs)
+        self.assertTrue(n5 not in outs)
+        self.assertTrue(n6 not in outs)
+
+        self.assertTrue(n1 not in ins)
+        self.assertTrue(n2 not in ins)
+        self.assertTrue(n3 in ins)
+        self.assertTrue(n4 not in ins)
+        self.assertTrue(n5 in ins)
+        self.assertTrue(n6 not in ins)
+
+    def test_filterStack(self):
+        graph = ObjectGraph()
+        n1 = graph.createNode(ArgNode, "n1", 0)
+        n11 = graph.createNode(ArgNode, "n1.1", 1)
+        n12 = graph.createNode(ArgNode, "n1.2", 0)
+        n111 = graph.createNode(ArgNode, "n1.1.1", 0)
+        n112 = graph.createNode(ArgNode, "n1.1.2",2)
+        n2 = graph.createNode(ArgNode, "n2", 0)
+        n3 = graph.createNode(ArgNode, "n2", 0)
+
+        graph.createReference(None, n1)
+        graph.createReference(None, n2)
+        graph.createReference(n1, n11)
+        graph.createReference(n1, n12)
+        graph.createReference(n11, n111)
+        graph.createReference(n11, n112)
+
+        self.assertTrue(n1 in graph)
+        self.assertTrue(n2 in graph)
+        self.assertTrue(n11 in graph)
+        self.assertTrue(n12 in graph)
+        self.assertTrue(n111 in graph)
+        self.assertTrue(n112 in graph)
+        self.assertTrue(n2 in graph)
+        self.assertTrue(n3 in graph)
+
+        visited, removes, orphans = graph.filterStack(
+                [lambda n: n.args[0] != 1, lambda n: n.args[0] != 2])
+
+        self.assertEqual(visited, 6)
+        self.assertEqual(removes, 2)
+        self.assertEqual(orphans, 1)
+
+        e = graph.graph.edge_by_node(n1.graphident, n111.graphident)
+        self.assertEqual(graph.graph.edge_data(e), "orphan")
+
+        self.assertTrue(n1 in graph)
+        self.assertTrue(n2 in graph)
+        self.assertTrue(n11 not in graph)
+        self.assertTrue(n12 in graph)
+        self.assertTrue(n111 in graph)
+        self.assertTrue(n112 not in graph)
+        self.assertTrue(n2 in graph)
+        self.assertTrue(n3 in graph)
+
+
+class TestObjectGraphIO (unittest.TestCase):
+    def setUp(self):
+        self._stdout = sys.stdout
+
+    def tearDown(self):
+        sys.stdout = self._stdout
+
+    def test_msg(self):
+        graph = ObjectGraph()
+
+        sys.stdout = fp = StringIO()
+        graph.msg(0, "foo")
+        self.assertEqual(fp.getvalue(), "foo \n")
+
+        sys.stdout = fp = StringIO()
+        graph.msg(5, "foo")
+        self.assertEqual(fp.getvalue(), "")
+
+        sys.stdout = fp = StringIO()
+        graph.debug = 10
+        graph.msg(5, "foo")
+        self.assertEqual(fp.getvalue(), "foo \n")
+
+        sys.stdout = fp = StringIO()
+        graph.msg(0, "foo", 1, "a")
+        self.assertEqual(fp.getvalue(), "foo 1 'a'\n")
+
+        sys.stdout = fp = StringIO()
+        graph.msgin(0, "hello", "world")
+        graph.msg(0, "test me")
+        graph.msgout(0, "bye bye")
+        self.assertEqual(fp.getvalue(), "hello 'world'\n  test me \nbye bye \n")
+
+
+if __name__ == "__main__": # pragma: no cover
+    unittest.main()
diff --git a/python/altgraph/doc/Makefile b/python/altgraph/doc/Makefile
new file mode 100644
index 000000000..b91ac8142
--- /dev/null
+++ b/python/altgraph/doc/Makefile
@@ -0,0 +1,89 @@
+# Makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+PAPER         =
+BUILDDIR      = _build
+
+# Internal variables.
+PAPEROPT_a4     = -D latex_paper_size=a4
+PAPEROPT_letter = -D latex_paper_size=letter
+ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+
+.PHONY: help clean html dirhtml pickle json htmlhelp qthelp latex changes linkcheck doctest
+
+help:
+	@echo "Please use \`make <target>' where <target> is one of"
+	@echo "  html      to make standalone HTML files"
+	@echo "  dirhtml   to make HTML files named index.html in directories"
+	@echo "  pickle    to make pickle files"
+	@echo "  json      to make JSON files"
+	@echo "  htmlhelp  to make HTML files and a HTML help project"
+	@echo "  qthelp    to make HTML files and a qthelp project"
+	@echo "  latex     to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+	@echo "  changes   to make an overview of all changed/added/deprecated items"
+	@echo "  linkcheck to check all external links for integrity"
+	@echo "  doctest   to run all doctests embedded in the documentation (if enabled)"
+
+clean:
+	-rm -rf $(BUILDDIR)/*
+
+html:
+	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
+
+dirhtml:
+	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	@echo
+	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
+
+pickle:
+	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	@echo
+	@echo "Build finished; now you can process the pickle files."
+
+json:
+	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	@echo
+	@echo "Build finished; now you can process the JSON files."
+
+htmlhelp:
+	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	@echo
+	@echo "Build finished; now you can run HTML Help Workshop with the" \
+	      ".hhp project file in $(BUILDDIR)/htmlhelp."
+
+qthelp:
+	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	@echo
+	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
+	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
+	@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/altgraph.qhcp"
+	@echo "To view the help file:"
+	@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/altgraph.qhc"
+
+latex:
+	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	@echo
+	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
+	@echo "Run \`make all-pdf' or \`make all-ps' in that directory to" \
+	      "run these through (pdf)latex."
+
+changes:
+	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	@echo
+	@echo "The overview file is in $(BUILDDIR)/changes."
+
+linkcheck:
+	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
+	@echo
+	@echo "Link check complete; look for any errors in the above output " \
+	      "or in $(BUILDDIR)/linkcheck/output.txt."
+
+doctest:
+	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	@echo "Testing of doctests in the sources finished, look at the " \
+	      "results in $(BUILDDIR)/doctest/output.txt."
diff --git a/python/altgraph/doc/_build/doctrees/changelog.doctree b/python/altgraph/doc/_build/doctrees/changelog.doctree
new file mode 100644
index 000000000..b78e2f235
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/changelog.doctree
diff --git a/python/altgraph/doc/_build/doctrees/core.doctree b/python/altgraph/doc/_build/doctrees/core.doctree
new file mode 100644
index 000000000..367409313
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/core.doctree
diff --git a/python/altgraph/doc/_build/doctrees/dot.doctree b/python/altgraph/doc/_build/doctrees/dot.doctree
new file mode 100644
index 000000000..f2bd9ea89
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/dot.doctree
diff --git a/python/altgraph/doc/_build/doctrees/environment.pickle b/python/altgraph/doc/_build/doctrees/environment.pickle
new file mode 100644
index 000000000..4e7b4ea03
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/environment.pickle
diff --git a/python/altgraph/doc/_build/doctrees/graph.doctree b/python/altgraph/doc/_build/doctrees/graph.doctree
new file mode 100644
index 000000000..5c9aef42c
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/graph.doctree
diff --git a/python/altgraph/doc/_build/doctrees/graphalgo.doctree b/python/altgraph/doc/_build/doctrees/graphalgo.doctree
new file mode 100644
index 000000000..e22ca572d
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/graphalgo.doctree
diff --git a/python/altgraph/doc/_build/doctrees/graphstat.doctree b/python/altgraph/doc/_build/doctrees/graphstat.doctree
new file mode 100644
index 000000000..2e0503615
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/graphstat.doctree
diff --git a/python/altgraph/doc/_build/doctrees/graphutil.doctree b/python/altgraph/doc/_build/doctrees/graphutil.doctree
new file mode 100644
index 000000000..eb9fa2c65
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/graphutil.doctree
diff --git a/python/altgraph/doc/_build/doctrees/index.doctree b/python/altgraph/doc/_build/doctrees/index.doctree
new file mode 100644
index 000000000..f3241e5e3
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/index.doctree
diff --git a/python/altgraph/doc/_build/doctrees/license.doctree b/python/altgraph/doc/_build/doctrees/license.doctree
new file mode 100644
index 000000000..ba3ce378a
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/license.doctree
diff --git a/python/altgraph/doc/_build/doctrees/objectgraph.doctree b/python/altgraph/doc/_build/doctrees/objectgraph.doctree
new file mode 100644
index 000000000..802396b9c
--- /dev/null
+++ b/python/altgraph/doc/_build/doctrees/objectgraph.doctree
diff --git a/python/altgraph/doc/_build/html/.buildinfo b/python/altgraph/doc/_build/html/.buildinfo
new file mode 100644
index 000000000..003a04976
--- /dev/null
+++ b/python/altgraph/doc/_build/html/.buildinfo
@@ -0,0 +1,4 @@
+# Sphinx build info version 1
+# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
+config: 84aa655833f036f5ba0f6f2dbd1945fa
+tags: 645f666f9bcd5a90fca523b33c5a78b7
diff --git a/python/altgraph/doc/_build/html/_sources/changelog.txt b/python/altgraph/doc/_build/html/_sources/changelog.txt
new file mode 100644
index 000000000..e491c9544
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/changelog.txt
@@ -0,0 +1,176 @@
+Release history
+===============
+
+0.11
+----
+
+- Stabilize the order of elements in dot file exports,
+  patch from bitbucket user 'pombredanne'.
+
+- Tweak setup.py file to remove dependency on distribute (but
+  keep the dependency on setuptools)
+
+
+0.10.2
+------
+
+- There where no classifiers in the package metadata due to a bug
+  in setup.py
+
+0.10.1
+------
+
+This is a bugfix release
+
+Bug fixes:
+
+- Issue #3: The source archive contains a README.txt
+  while the setup file refers to ReadMe.txt.
+
+  This is caused by a misfeature in distutils, as a
+  workaround I've renamed ReadMe.txt to README.txt
+  in the source tree and setup file.
+
+
+0.10
+-----
+
+This is a minor feature release
+
+Features:
+
+- Do not use "2to3" to support Python 3.
+
+  As a side effect of this altgraph now supports
+  Python 2.6 and later, and no longer supports
+  earlier releases of Python.
+
+- The order of attributes in the Dot output
+  is now always alphabetical.
+
+  With this change the output will be consistent
+  between runs and Python versions.
+
+0.9
+---
+
+This is a minor bugfix release
+
+Features:
+
+- Added ``altgraph.ObjectGraph.ObjectGraph.nodes``, a method
+  yielding all nodes in an object graph.
+
+Bugfixes:
+
+- The 0.8 release didn't work with py2app when using
+  python 3.x.
+
+
+0.8
+-----
+
+This is a minor feature release. The major new feature
+is a extensive set of unittests, which explains almost
+all other changes in this release.
+
+Bugfixes:
+
+- Installing failed with Python 2.5 due to using a distutils
+  class that isn't available in that version of Python
+  (issue #1 on the issue tracker)
+
+- ``altgraph.GraphStat.degree_dist`` now actually works
+
+- ``altgraph.Graph.add_edge(a, b, create_nodes=False)`` will
+  no longer create the edge when one of the nodes doesn't
+  exist.
+
+- ``altgraph.Graph.forw_topo_sort`` failed for some sparse graphs.
+
+- ``altgraph.Graph.back_topo_sort`` was completely broken in
+  previous releases.
+
+- ``altgraph.Graph.forw_bfs_subgraph`` now actually works.
+
+- ``altgraph.Graph.back_bfs_subgraph`` now actually works.
+
+- ``altgraph.Graph.iterdfs`` now returns the correct result
+  when the ``forward`` argument is ``False``.
+
+- ``altgraph.Graph.iterdata`` now returns the correct result
+  when the ``forward`` argument is ``False``.
+
+
+Features:
+
+- The ``altgraph.Graph`` constructor now accepts an argument
+  that contains 2- and 3-tuples instead of requireing that
+  all items have the same size. The (optional) argument can now
+  also be any iterator.
+
+- ``altgraph.Graph.Graph.add_node`` has no effect when you
+  add a hidden node.
+
+- The private method ``altgraph.Graph._bfs`` is no longer
+  present.
+
+- The private method ``altgraph.Graph._dfs`` is no longer
+  present.
+
+- ``altgraph.ObjectGraph`` now has a ``__contains__`` methods,
+  which means you can use the ``in`` operator to check if a
+  node is part of a graph.
+
+- ``altgraph.GraphUtil.generate_random_graph`` will raise
+  ``GraphError`` instead of looping forever when it is
+  impossible to create the requested graph.
+
+- ``altgraph.Dot.edge_style`` raises ``GraphError`` when
+  one of the nodes is not present in the graph. The method
+  silently added the tail in the past, but without ensuring
+  a consistent graph state.
+
+- ``altgraph.Dot.save_img`` now works when the mode is
+  ``"neato"``.
+
+0.7.2
+-----
+
+This is a minor bugfix release
+
+Bugfixes:
+
+- distutils didn't include the documentation subtree
+
+0.7.1
+-----
+
+This is a minor feature release
+
+Features:
+
+- Documentation is now generated using `sphinx <http://pypi.python.org/pypi/sphinx>`_
+  and can be viewed at <http://packages.python.org/altgraph>.
+
+- The repository has moved to bitbucket
+
+- ``altgraph.GraphStat.avg_hops`` is no longer present, the function had no
+  implementation and no specified behaviour.
+
+- the module ``altgraph.compat`` is gone, which means altgraph will no
+  longer work with Python 2.3.
+
+
+0.7.0
+-----
+
+This is a minor feature release.
+
+Features:
+
+- Support for Python 3
+
+- It is now possible to run tests using 'python setup.py test'
+
+  (The actual testsuite is still very minimal though)
diff --git a/python/altgraph/doc/_build/html/_sources/core.txt b/python/altgraph/doc/_build/html/_sources/core.txt
new file mode 100644
index 000000000..8288f6a94
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/core.txt
@@ -0,0 +1,26 @@
+:mod:`altgraph` --- A Python Graph Library
+==================================================
+
+.. module:: altgraph
+   :synopsis: A directional graph for python
+
+altgraph is a fork of `graphlib <http://pygraphlib.sourceforge.net>`_ tailored
+to use newer Python 2.3+ features, including additional support used by the
+py2app suite (modulegraph and macholib, specifically).
+
+altgraph is a python based graph (network) representation and manipulation package.
+It has started out as an extension to the `graph_lib module <http://www.ece.arizona.edu/~denny/python_nest/graph_lib_1.0.1.html>`_
+written by Nathan Denny it has been significantly optimized and expanded.
+
+The :class:`altgraph.Graph.Graph` class is loosely modeled after the `LEDA <http://www.algorithmic-solutions.com/enleda.htm>`_ 
+(Library of Efficient Datatypes)  representation. The library
+includes methods for constructing graphs, BFS and DFS traversals,
+topological sort, finding connected components, shortest paths as well as a number
+graph statistics functions. The library can also visualize graphs
+via `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_.
+
+
+.. exception:: GraphError
+
+   Exception raised when methods are called with bad values of
+   an inconsistent state.
diff --git a/python/altgraph/doc/_build/html/_sources/dot.txt b/python/altgraph/doc/_build/html/_sources/dot.txt
new file mode 100644
index 000000000..3848c488a
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/dot.txt
@@ -0,0 +1,224 @@
+:mod:`altgraph.Dot` --- Interface to the dot language
+=====================================================
+
+.. module:: altgraph.Dot
+   :synopsis: Interface to the dot language as used by Graphviz..
+
+The :py:mod:`~altgraph.Dot` module provides a simple interface to the
+file format used in the `graphviz`_ program. The module is intended to 
+offload the most tedious part of the process (the **dot** file generation) 
+while transparently exposing most of its features.
+
+.. _`graphviz`: <http://www.research.att.com/sw/tools/graphviz/>`_
+
+To display the graphs or to generate image files the `graphviz`_
+package needs to be installed on the system, moreover the :command:`dot` and :command:`dotty` programs must
+be accesible in the program path so that they can be ran from processes spawned
+within the module. 
+
+Example usage
+-------------
+
+Here is a typical usage::
+
+    from altgraph import Graph, Dot
+
+    # create a graph
+    edges = [ (1,2), (1,3), (3,4), (3,5), (4,5), (5,4) ]
+    graph = Graph.Graph(edges)
+    
+    # create a dot representation of the graph
+    dot = Dot.Dot(graph)
+
+    # display the graph
+    dot.display()
+
+    # save the dot representation into the mydot.dot file
+    dot.save_dot(file_name='mydot.dot')
+
+    # save dot file as gif image into the graph.gif file
+    dot.save_img(file_name='graph', file_type='gif')
+
+
+Directed graph and non-directed graph
+-------------------------------------
+
+Dot class can use for both directed graph and non-directed graph
+by passing *graphtype* parameter.
+
+Example::
+
+    # create directed graph(default)
+    dot = Dot.Dot(graph, graphtype="digraph")
+
+    # create non-directed graph
+    dot = Dot.Dot(graph, graphtype="graph")
+
+
+Customizing the output
+----------------------
+
+The graph drawing process may be customized by passing
+valid :command:`dot` parameters for the nodes and edges. For a list of all
+parameters see the `graphviz`_ documentation.
+
+Example::
+
+    # customizing the way the overall graph is drawn
+    dot.style(size='10,10', rankdir='RL', page='5, 5' , ranksep=0.75)
+
+    # customizing node drawing
+    dot.node_style(1, label='BASE_NODE',shape='box', color='blue' )
+    dot.node_style(2, style='filled', fillcolor='red')
+
+    # customizing edge drawing
+    dot.edge_style(1, 2, style='dotted')
+    dot.edge_style(3, 5, arrowhead='dot', label='binds', labelangle='90')
+    dot.edge_style(4, 5, arrowsize=2, style='bold')
+
+
+    .. note:: 
+       
+       dotty (invoked via :py:func:`~altgraph.Dot.display`) may not be able to
+       display all graphics styles. To verify the output save it to an image 
+       file and look at it that way.
+
+Valid attributes
+----------------
+
+- dot styles, passed via the :py:meth:`Dot.style` method::
+
+    rankdir = 'LR'   (draws the graph horizontally, left to right)
+    ranksep = number (rank separation in inches)
+
+- node attributes, passed via the :py:meth:`Dot.node_style` method::
+
+     style = 'filled' | 'invisible' | 'diagonals' | 'rounded'
+     shape = 'box' | 'ellipse' | 'circle' | 'point' | 'triangle'
+
+- edge attributes, passed via the :py:meth:`Dot.edge_style` method::
+
+     style     = 'dashed' | 'dotted' | 'solid' | 'invis' | 'bold'
+     arrowhead = 'box' | 'crow' | 'diamond' | 'dot' | 'inv' | 'none' | 'tee' | 'vee'
+     weight    = number (the larger the number the closer the nodes will be)
+
+- valid `graphviz colors <http://www.research.att.com/~erg/graphviz/info/colors.html>`_
+
+- for more details on how to control the graph drawing process see the 
+  `graphviz reference <http://www.research.att.com/sw/tools/graphviz/refs.html>`_.
+
+
+Class interface
+---------------
+
+.. class:: Dot(graph[, nodes[, edgefn[, nodevisitor[, edgevisitor[, name[, dot[, dotty[, neato[, graphtype]]]]]]]]])
+
+  Creates a new Dot generator based on the specified 
+  :class:`Graph <altgraph.Graph.Graph>`.  The Dot generator won't reference
+  the *graph* once it is constructed.
+
+  If the *nodes* argument is present it is the list of nodes to include
+  in the graph, otherwise all nodes in *graph* are included.
+  
+  If the *edgefn* argument is present it is a function that yields the
+  nodes connected to another node, this defaults to 
+  :meth:`graph.out_nbr <altgraph.Graph.Graph.out_nbr>`. The constructor won't
+  add edges to the dot file unless both the head and tail of the edge
+  are in *nodes*.
+
+  If the *name* is present it specifies the name of the graph in the resulting
+  dot file. The default is ``"G"``.
+
+  The functions *nodevisitor* and *edgevisitor* return the default style
+  for a given edge or node (both default to functions that return an empty
+  style).
+
+  The arguments *dot*, *dotty* and *neato* are used to pass the path to 
+  the corresponding `graphviz`_ command.
+
+
+Updating graph attributes
+.........................
+
+.. method:: Dot.style(\**attr)
+
+   Sets the overall style (graph attributes) to the given attributes.
+
+   See `Valid Attributes`_ for more information about the attributes.
+
+.. method:: Dot.node_style(node, \**attr)
+
+   Sets the style for *node* to the given attributes.
+
+   This method will add *node* to the graph when it isn't already 
+   present.
+
+   See `Valid Attributes`_ for more information about the attributes.
+
+.. method:: Dot.all_node_style(\**attr)
+
+   Replaces the current style for all nodes
+
+
+.. method:: edge_style(head, tail, \**attr)
+
+   Sets the style of an edge to the given attributes. The edge will
+   be added to the graph when it isn't already present, but *head*
+   and *tail* must both be valid nodes.
+
+   See `Valid Attributes`_ for more information about the attributes.
+
+
+
+Emitting output
+...............
+
+.. method:: Dot.display([mode])
+
+   Displays the current graph via dotty.
+
+   If the *mode* is ``"neato"`` the dot file is processed with
+   the neato command before displaying.
+
+   This method won't return until the dotty command exits.
+
+.. method:: save_dot(filename)
+
+   Saves the current graph representation into the given file.
+
+   .. note::
+
+       For backward compatibility reasons this method can also
+       be called without an argument, it will then write the graph
+       into a fixed filename (present in the attribute :data:`Graph.temp_dot`).
+
+       This feature is deprecated and should not be used.
+
+
+.. method:: save_image(file_name[, file_type[, mode]])
+
+   Saves the current graph representation as an image file. The output
+   is written into a file whose basename is *file_name* and whose suffix
+   is *file_type*.
+
+   The *file_type* specifies the type of file to write, the default
+   is ``"gif"``.
+
+   If the *mode* is ``"neato"`` the dot file is processed with
+   the neato command before displaying.
+
+   .. note::
+
+       For backward compatibility reasons this method can also
+       be called without an argument, it will then write the graph
+       with a fixed basename (``"out"``).
+
+       This feature is deprecated and should not be used.
+
+.. method:: iterdot()
+
+   Yields all lines of a `graphviz`_ input file (including line endings).
+
+.. method:: __iter__()
+
+   Alias for the :meth:`iterdot` method.
diff --git a/python/altgraph/doc/_build/html/_sources/graph.txt b/python/altgraph/doc/_build/html/_sources/graph.txt
new file mode 100644
index 000000000..72e36bbc1
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/graph.txt
@@ -0,0 +1,299 @@
+:mod:`altgraph.Graph` --- Basic directional graphs
+==================================================
+
+.. module:: altgraph.Graph
+   :synopsis: Basic directional graphs.
+
+The module :mod:`altgraph.Graph` provides a class :class:`Graph` that
+represents a directed graph with *N* nodes and *E* edges.
+
+.. class:: Graph([edges])
+
+  Constructs a new empty :class:`Graph` object. If the optional
+  *edges* parameter is supplied, updates the graph by adding the
+  specified edges. 
+  
+  All of the elements in *edges* should be tuples with two or three 
+  elements. The first two elements of the tuple are the source and
+  destination node of the edge, the optional third element is the
+  edge data.  The source and destination nodes are added to the graph
+  when the aren't already present.
+
+
+Node related methods
+--------------------
+
+.. method:: Graph.add_node(node[, node_data])
+
+   Adds a new node to the graph if it is not already present. The new
+   node must be a hashable object.
+
+   Arbitrary data can be attached to the node via the optional *node_data*
+   argument.
+
+   .. note:: the node also won't be added to the graph when it is
+      present but currently hidden.
+
+
+.. method:: Graph.hide_node(node)
+
+   Hides a *node* from the graph. The incoming and outgoing edges of
+   the node will also be hidden. 
+
+   Raises :class:`altgraph.GraphError` when the node is not (visible)
+   node of the graph.
+
+
+.. method:: Graph.restore_node(node)
+
+   Restores a previously hidden *node*. The incoming and outgoing
+   edges of the node are also restored.
+
+   Raises :class:`altgraph.GraphError` when the node is not a hidden
+   node of the graph.
+
+.. method:: Graph.restore_all_nodes()
+
+   Restores all hidden nodes.
+
+.. method:: Graph.number_of_nodes()
+
+   Return the number of visible nodes in the graph.
+
+.. method:: Graph.number_of_hidden_nodes()
+
+   Return the number of hidden nodes in the graph.
+
+.. method:: Graph.node_list()
+
+   Return a list with all visible nodes in the graph.
+
+.. method:: Graph.hidden_node_list()
+
+   Return a list with all hidden nodes in the graph.
+
+.. method:: node_data(node)
+
+   Return the data associated with the *node* when it was
+   added.
+
+.. method:: Graph.describe_node(node)
+
+   Returns *node*, the node's data and the lists of outgoing
+   and incoming edges for the node.
+
+   .. note:: 
+   
+      the edge lists should not be modified, doing so
+      can result in unpredicatable behavior.
+
+.. method:: Graph.__contains__(node)
+
+   Returns True iff *node* is a node in the graph. This
+   method is accessed through the *in* operator.
+
+.. method:: Graph.__iter__()
+
+   Yield all nodes in the graph.
+
+.. method:: Graph.out_edges(node)
+
+   Return the list of outgoing edges for *node*
+
+.. method:: Graph.inc_edges(node)
+
+   Return the list of incoming edges for *node*
+
+.. method:: Graph.all_edges(node)
+
+   Return the list of incoming and outgoing edges for *node*
+
+.. method:: Graph.out_degree(node)
+
+   Return the number of outgoing edges for *node*.
+
+.. method:: Graph.inc_degree(node)
+
+   Return the number of incoming edges for *node*.
+
+.. method:: Graph.all_degree(node)
+
+   Return the number of edges (incoming or outgoing) for *node*.
+
+Edge related methods
+--------------------
+
+.. method:: Graph.add_edge(head_id, tail_id [, edge data [, create_nodes]])
+
+   Adds a directed edge from *head_id* to *tail_id*. Arbitrary data can
+   be added via *edge_data*.  When *create_nodes* is *True* (the default),
+   *head_id* and *tail_id* will be added to the graph when the aren't 
+   already present.
+
+.. method:: Graph.hide_edge(edge)
+
+   Hides an edge from the graph. The edge may be unhidden at some later 
+   time.
+
+.. method:: Graph.restore_edge(edge)
+
+   Restores a previously hidden *edge*.
+
+.. method:: Graph.restore_all_edges()
+
+   Restore all edges that were hidden before, except for edges
+   referring to hidden nodes.
+
+.. method:: Graph.edge_by_node(head, tail)
+
+   Return the edge ID for an edge from *head* to *tail*,
+   or :data:`None` when no such edge exists.
+
+.. method:: Graph.edge_by_id(edge)
+
+   Return the head and tail of the *edge*
+
+.. method:: Graph.edge_data(edge)
+
+   Return the data associated with the *edge*.
+
+
+.. method:: Graph.head(edge)
+
+   Return the head of an *edge*
+
+.. method:: Graph.tail(edge)
+
+   Return the tail of an *edge*
+
+.. method:: Graph.describe_edge(edge)
+
+   Return the *edge*, the associated data, its head and tail.
+
+.. method:: Graph.number_of_edges()
+
+   Return the number of visible edges.
+
+.. method:: Graph.number_of_hidden_edges()
+
+   Return the number of hidden edges.
+
+.. method:: Graph.edge_list()
+
+   Returns a list with all visible edges in the graph.
+
+.. method:: Graph.hidden_edge_list()
+
+   Returns a list with all hidden edges in the graph.
+
+Graph traversal
+---------------
+
+.. method:: Graph.out_nbrs(node)
+
+   Return a list of all nodes connected by outgoing edges.
+
+.. method:: Graph.inc_nbrs(node)
+
+   Return a list of all nodes connected by incoming edges.
+
+.. method:: Graph.all_nbrs(node)
+
+   Returns a list of nodes connected by an incoming or outgoing edge.
+
+.. method:: Graph.forw_topo_sort()
+
+   Return a list of nodes where the successors (based on outgoing
+   edges) of any given node apear in the sequence after that node.
+
+.. method:: Graph.back_topo_sort()
+
+   Return a list of nodes where the successors (based on incoming
+   edges) of any given node apear in the sequence after that node.
+
+.. method:: Graph.forw_bfs_subgraph(start_id)
+
+   Return a subgraph consisting of the breadth first
+   reachable nodes from *start_id* based on their outgoing edges.
+
+
+.. method:: Graph.back_bfs_subgraph(start_id)
+
+   Return a subgraph consisting of the breadth first
+   reachable nodes from *start_id* based on their incoming edges.
+
+.. method:: Graph.iterdfs(start[, end[, forward]])
+
+   Yield nodes in a depth first traversal starting at the *start*
+   node. 
+   
+   If *end* is specified traversal stops when reaching that node.
+
+   If forward is True (the default) edges are traversed in forward
+   direction, otherwise they are traversed in reverse direction.
+
+.. method:: Graph.iterdata(start[, end[, forward[, condition]]])
+
+   Yield the associated data for nodes in a depth first traversal
+   starting at the *start* node. This method will not yield values for nodes
+   without associated data.
+
+   If *end* is specified traversal stops when reaching that node.
+
+   If *condition* is specified and the condition callable returns
+   False for the associated data this method will not yield the
+   associated data and will not follow the edges for the node.
+
+   If forward is True (the default) edges are traversed in forward
+   direction, otherwise they are traversed in reverse direction.
+
+.. method:: Graph.forw_bfs(start[, end])
+
+   Returns a list of nodes starting at *start* in some bread first
+   search order (following outgoing edges).
+
+   When *end* is specified iteration stops at that node.
+
+.. method:: Graph.back_bfs(start[, end])
+
+   Returns a list of nodes starting at *start* in some bread first
+   search order (following incoming edges).
+
+   When *end* is specified iteration stops at that node.
+
+.. method:: Graph.get_hops(start[, end[, forward]])
+
+   Computes the hop distance to all nodes centered around a specified node.
+
+   First order neighbours are at hop 1, their neigbours are at hop 2 etc.
+   Uses :py:meth:`forw_bfs` or :py:meth:`back_bfs` depending on the value of 
+   the forward parameter.  
+   
+   If the distance between all neighbouring nodes is 1 the hop number 
+   corresponds to the shortest distance between the nodes.  
+
+   Typical usage::
+
+        >>> print graph.get_hops(1, 8)
+        >>> [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)]
+        # node 1 is at 0 hops
+        # node 2 is at 1 hop
+        # ...
+        # node 8 is at 5 hops
+
+
+Graph statistics
+----------------
+
+.. method:: Graph.connected()
+
+   Returns True iff every node in the graph can be reached from
+   every other node.
+
+.. method:: Graph.clust_coef(node)
+
+   Returns the local clustering coefficient of node. 
+
+   The local cluster coefficient is the proportion of the actual number
+   of edges between neighbours of node and the maximum number of
+   edges between those nodes.
diff --git a/python/altgraph/doc/_build/html/_sources/graphalgo.txt b/python/altgraph/doc/_build/html/_sources/graphalgo.txt
new file mode 100644
index 000000000..84d492f44
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/graphalgo.txt
@@ -0,0 +1,26 @@
+:mod:`altgraph.GraphAlgo` --- Graph algorithms
+==================================================
+
+.. module:: altgraph.GraphAlgo
+   :synopsis: Basic graphs algoritms
+
+.. function:: dijkstra(graph, start[, end])
+
+   Dijkstra's algorithm for shortest paths.
+
+   Find shortest paths from the  start node to all nodes nearer 
+   than or equal to the *end* node. The edge data is assumed to be the edge length.
+
+   .. note::
+
+       Dijkstra's algorithm is only guaranteed to work correctly when all edge lengths are positive.
+       This code does not verify this property for all edges (only the edges examined until the end
+       vertex is reached), but will correctly compute shortest paths even for some graphs with negative
+       edges, and will raise an exception if it discovers that a negative edge has caused it to make a mistake.
+
+
+.. function:: shortest_path(graph, start, end)
+
+   Find a single shortest path from the given start node to the given end node.
+   The input has the same conventions as :func:`dijkstra`. The output is a list 
+   of the nodes in order along the shortest path.
diff --git a/python/altgraph/doc/_build/html/_sources/graphstat.txt b/python/altgraph/doc/_build/html/_sources/graphstat.txt
new file mode 100644
index 000000000..0931a12dd
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/graphstat.txt
@@ -0,0 +1,25 @@
+:mod:`altgraph.GraphStat` --- Functions providing various graph statistics
+==========================================================================
+
+.. module:: altgraph.GraphStat
+   :synopsis: Functions providing various graph statistics
+
+The module :mod:`altgraph.GraphStat` provides function that calculate
+graph statistics. Currently there is only one such function, more may
+be added later.
+
+.. function:: degree_dist(graph[, limits[, bin_num[, mode]]])
+
+   Groups the number of edges per node into *bin_num* bins
+   and returns the list of those bins. Every item in the result
+   is a tuple with the center of the bin and the number of items
+   in that bin.
+
+   When the *limits* argument is present it must be a tuple with
+   the mininum and maximum number of edges that get binned (that
+   is, when *limits* is ``(4, 10)`` only nodes with between 4
+   and 10 edges get counted.
+
+   The *mode* argument is used to count incoming (``'inc'``) or
+   outgoing (``'out'``) edges. The default is to count the outgoing
+   edges.
diff --git a/python/altgraph/doc/_build/html/_sources/graphutil.txt b/python/altgraph/doc/_build/html/_sources/graphutil.txt
new file mode 100644
index 000000000..c07836df8
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/graphutil.txt
@@ -0,0 +1,55 @@
+:mod:`altgraph.GraphUtil` --- Utility functions
+================================================
+
+.. module:: altgraph.GraphUtil
+   :synopsis: Utility functions
+
+The module :mod:`altgraph.GraphUtil` performs a number of more
+or less useful utility functions.
+
+.. function:: generate_random_graph(node_num, edge_num[, self_loops[, multi_edges])
+
+   Generates and returns a :class:`Graph <altgraph.Graph.Graph>` instance
+   with *node_num* nodes randomly connected by *edge_num* edges.
+
+   When *self_loops* is present and True there can be edges that point from
+   a node to itself.
+
+   When *multi_edge* is present and True there can be duplicate edges.
+
+   This method raises :class:`GraphError <altgraph.GraphError` when
+   a graph with the requested configuration cannot be created.
+
+.. function:: generate_scale_free_graph(steps, growth_num[, self_loops[, multi_edges]])
+
+    Generates and returns a :py:class:`~altgraph.Graph.Graph` instance that 
+    will have *steps*growth_n um* nodes and a scale free (powerlaw) 
+    connectivity. 
+    
+    Starting with a fully connected graph with *growth_num* nodes
+    at every step *growth_num* nodes are added to the graph and are connected 
+    to existing nodes with a probability proportional to the degree of these 
+    existing nodes.
+
+    .. warning:: The current implementation is basically untested, although
+       code inspection seems to indicate an implementation that is consistent
+       with the description at 
+       `Wolfram MathWorld <http://mathworld.wolfram.com/Scale-FreeNetwork.html>`_
+
+.. function:: filter_stack(graph, head, filters)
+
+   Perform a depth-first oder walk of the graph starting at *head* and
+   apply all filter functions in *filters* on the node data of the nodes
+   found.
+
+   Returns (*visited*, *removes*, *orphans*), where
+
+   * *visited*: the set of visited nodes
+
+   * *removes*: the list of nodes where the node data doesn't match
+     all *filters*.
+
+   * *orphans*: list of tuples (*last_good*, *node*), where 
+     node is not in *removes* and one of the nodes that is connected
+     by an incoming edge is in *removes*. *Last_good* is the
+     closest upstream node that is not in *removes*.
diff --git a/python/altgraph/doc/_build/html/_sources/index.txt b/python/altgraph/doc/_build/html/_sources/index.txt
new file mode 100644
index 000000000..1e8d504ed
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/index.txt
@@ -0,0 +1,41 @@
+.. altgraph documentation master file, created by
+   sphinx-quickstart on Tue Aug 31 11:04:49 2010.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Altgraph - A basic graph library
+================================
+
+altgraph is a fork of graphlib: a graph (network) package for constructing
+graphs, BFS and DFS traversals, topological sort, shortest paths, etc. with
+graphviz output.
+
+The primary users of this package are `macholib <http://pypi.python.org/pypi/macholib>`_ and `modulegraph <http://pypi.python.org/pypi/modulegraph>`_.
+
+.. toctree::
+   :maxdepth: 1
+
+   changelog
+   license
+   core
+   graph
+   objectgraph
+   graphalgo
+   graphstat
+   graphutil
+   dot
+
+Online Resources
+----------------
+
+* `Sourcecode repository on bitbucket <http://bitbucket.org/ronaldoussoren/altgraph/>`_
+
+* `The issue tracker <http://bitbucket.org/ronaldoussoren/altgraph/issues>`_
+
+Indices and tables
+------------------
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
diff --git a/python/altgraph/doc/_build/html/_sources/license.txt b/python/altgraph/doc/_build/html/_sources/license.txt
new file mode 100644
index 000000000..498e60be0
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/license.txt
@@ -0,0 +1,25 @@
+License
+=======
+
+Copyright (c) 2004 Istvan Albert unless otherwise noted.
+
+Parts are copyright (c) Bob Ippolito
+
+Parts are copyright (c) 2010-2014 Ronald Oussoren
+
+MIT License
+...........
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+and associated documentation files (the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do
+so.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
diff --git a/python/altgraph/doc/_build/html/_sources/objectgraph.txt b/python/altgraph/doc/_build/html/_sources/objectgraph.txt
new file mode 100644
index 000000000..87485255f
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_sources/objectgraph.txt
@@ -0,0 +1,134 @@
+:mod:`altgraph.ObjectGraph` --- Graphs of objecs with an identifier
+===================================================================
+
+.. module:: altgraph.ObjectGraph
+   :synopsis: A graph of objects that have a "graphident" attribute.
+
+.. class:: ObjectGraph([graph[, debug]])
+
+   A graph of objects that have a "graphident" attribute. The
+   value of this attribute is the key for the object in the
+   graph.
+
+   The optional *graph* is a previously constructed 
+   :class:`Graph <altgraph.Graph.Graph>`.
+
+   The optional *debug* level controls the amount of debug output
+   (see :meth:`msg`, :meth:`msgin` and :meth:`msgout`).
+
+   .. note:: the altgraph library does not generate output, the
+      debug attribute and message methods are present for use
+      by subclasses.
+
+.. data:: ObjectGraph.graph
+
+   An :class:`Graph <altgraph.Graph.Graph>` object that contains
+   the graph data.
+
+
+.. method:: ObjectGraph.addNode(node)
+
+   Adds a *node* to the graph.  
+
+   .. note:: re-adding a node that was previously removed
+      using :meth:`removeNode` will reinstate the previously
+      removed node.
+
+.. method:: ObjectGraph.createNode(self, cls, name, \*args, \**kwds)
+
+   Creates a new node using ``cls(*args, **kwds)`` and adds that
+   node using :meth:`addNode`.
+
+   Returns the newly created node.
+
+.. method:: ObjectGraph.removeNode(node)
+
+   Removes a *node* from the graph when it exists. The *node* argument
+   is either a node object, or the graphident of a node.
+
+.. method:: ObjectGraph.createReferences(fromnode, tonode[, edge_data])
+
+   Creates a reference from *fromnode* to *tonode*. The optional
+   *edge_data* is associated with the edge.
+
+   *Fromnode* and *tonode* can either be node objects or the graphident
+   values for nodes.
+
+.. method:: removeReference(fromnode, tonode)
+
+   Removes the reference from *fromnode* to *tonode* if it exists.
+
+.. method:: ObjectGraph.getRawIdent(node)
+
+   Returns the *graphident* attribute of *node*, or the graph itself
+   when *node* is :data:`None`.
+
+.. method:: getIdent(node)
+
+   Same as :meth:`getRawIdent`, but only if the node is part
+   of the graph. 
+
+   *Node* can either be an actual node object or the graphident of
+   a node.
+
+.. method:: ObjectGraph.findNode(node)
+
+   Returns a given node in the graph, or :data:`Node` when it cannot
+   be found.
+
+   *Node* is either an object with a *graphident* attribute or
+   the *graphident* attribute itself.
+
+.. method:: ObjectGraph.__contains__(node)
+
+   Returns True if *node* is a member of the graph. *Node* is either an 
+   object with a *graphident* attribute or the *graphident* attribute itself.
+
+.. method:: ObjectGraph.flatten([condition[, start]])
+
+   Yield all nodes that are entirely reachable by *condition*
+   starting fromt he given *start* node or the graph root.
+
+   .. note:: objects are only reachable from the graph root
+      when there is a reference from the root to the node
+      (either directly or through another node)
+
+.. method:: ObjectGraph.nodes()
+
+   Yield all nodes in the graph.
+
+.. method:: ObjectGraph.get_edges(node)
+
+   Returns two iterators that yield the nodes reaching by
+   outgoing and incoming edges.
+
+.. method:: ObjectGraph.filterStack(filters)
+
+   Filter the ObjectGraph in-place by removing all edges to nodes that
+   do not match every filter in the given filter list
+
+   Returns a tuple containing the number of: 
+   (*nodes_visited*, *nodes_removed*, *nodes_orphaned*)
+
+
+Debug output
+------------
+
+.. data:: ObjectGraph.debug
+
+   The current debug level.
+
+.. method:: ObjectGraph.msg(level, text, \*args)
+
+   Print a debug message at the current indentation level when the current 
+   debug level is *level* or less.
+
+.. method:: ObjectGraph.msgin(level, text, \*args)
+
+   Print a debug message when the current debug level is *level* or less,
+   and increase the indentation level.
+
+.. method:: ObjectGraph.msgout(level, text, \*args)
+
+   Decrease the indentation level and print a debug message when the 
+   current debug level is *level* or less.
diff --git a/python/altgraph/doc/_build/html/_static/ajax-loader.gif b/python/altgraph/doc/_build/html/_static/ajax-loader.gif
new file mode 100644
index 000000000..61faf8cab
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/ajax-loader.gif
diff --git a/python/altgraph/doc/_build/html/_static/basic.css b/python/altgraph/doc/_build/html/_static/basic.css
new file mode 100644
index 000000000..c959cf0db
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/basic.css
@@ -0,0 +1,537 @@
+/*
+ * basic.css
+ * ~~~~~~~~~
+ *
+ * Sphinx stylesheet -- basic theme.
+ *
+ * :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/* -- main layout ----------------------------------------------------------- */
+
+div.clearer {
+    clear: both;
+}
+
+/* -- relbar ---------------------------------------------------------------- */
+
+div.related {
+    width: 100%;
+    font-size: 90%;
+}
+
+div.related h3 {
+    display: none;
+}
+
+div.related ul {
+    margin: 0;
+    padding: 0 0 0 10px;
+    list-style: none;
+}
+
+div.related li {
+    display: inline;
+}
+
+div.related li.right {
+    float: right;
+    margin-right: 5px;
+}
+
+/* -- sidebar --------------------------------------------------------------- */
+
+div.sphinxsidebarwrapper {
+    padding: 10px 5px 0 10px;
+}
+
+div.sphinxsidebar {
+    float: left;
+    width: 230px;
+    margin-left: -100%;
+    font-size: 90%;
+}
+
+div.sphinxsidebar ul {
+    list-style: none;
+}
+
+div.sphinxsidebar ul ul,
+div.sphinxsidebar ul.want-points {
+    margin-left: 20px;
+    list-style: square;
+}
+
+div.sphinxsidebar ul ul {
+    margin-top: 0;
+    margin-bottom: 0;
+}
+
+div.sphinxsidebar form {
+    margin-top: 10px;
+}
+
+div.sphinxsidebar input {
+    border: 1px solid #98dbcc;
+    font-family: sans-serif;
+    font-size: 1em;
+}
+
+div.sphinxsidebar #searchbox input[type="text"] {
+    width: 170px;
+}
+
+div.sphinxsidebar #searchbox input[type="submit"] {
+    width: 30px;
+}
+
+img {
+    border: 0;
+    max-width: 100%;
+}
+
+/* -- search page ----------------------------------------------------------- */
+
+ul.search {
+    margin: 10px 0 0 20px;
+    padding: 0;
+}
+
+ul.search li {
+    padding: 5px 0 5px 20px;
+    background-image: url(file.png);
+    background-repeat: no-repeat;
+    background-position: 0 7px;
+}
+
+ul.search li a {
+    font-weight: bold;
+}
+
+ul.search li div.context {
+    color: #888;
+    margin: 2px 0 0 30px;
+    text-align: left;
+}
+
+ul.keywordmatches li.goodmatch a {
+    font-weight: bold;
+}
+
+/* -- index page ------------------------------------------------------------ */
+
+table.contentstable {
+    width: 90%;
+}
+
+table.contentstable p.biglink {
+    line-height: 150%;
+}
+
+a.biglink {
+    font-size: 1.3em;
+}
+
+span.linkdescr {
+    font-style: italic;
+    padding-top: 5px;
+    font-size: 90%;
+}
+
+/* -- general index --------------------------------------------------------- */
+
+table.indextable {
+    width: 100%;
+}
+
+table.indextable td {
+    text-align: left;
+    vertical-align: top;
+}
+
+table.indextable dl, table.indextable dd {
+    margin-top: 0;
+    margin-bottom: 0;
+}
+
+table.indextable tr.pcap {
+    height: 10px;
+}
+
+table.indextable tr.cap {
+    margin-top: 10px;
+    background-color: #f2f2f2;
+}
+
+img.toggler {
+    margin-right: 3px;
+    margin-top: 3px;
+    cursor: pointer;
+}
+
+div.modindex-jumpbox {
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+    margin: 1em 0 1em 0;
+    padding: 0.4em;
+}
+
+div.genindex-jumpbox {
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+    margin: 1em 0 1em 0;
+    padding: 0.4em;
+}
+
+/* -- general body styles --------------------------------------------------- */
+
+a.headerlink {
+    visibility: hidden;
+}
+
+h1:hover > a.headerlink,
+h2:hover > a.headerlink,
+h3:hover > a.headerlink,
+h4:hover > a.headerlink,
+h5:hover > a.headerlink,
+h6:hover > a.headerlink,
+dt:hover > a.headerlink {
+    visibility: visible;
+}
+
+div.body p.caption {
+    text-align: inherit;
+}
+
+div.body td {
+    text-align: left;
+}
+
+.field-list ul {
+    padding-left: 1em;
+}
+
+.first {
+    margin-top: 0 !important;
+}
+
+p.rubric {
+    margin-top: 30px;
+    font-weight: bold;
+}
+
+img.align-left, .figure.align-left, object.align-left {
+    clear: left;
+    float: left;
+    margin-right: 1em;
+}
+
+img.align-right, .figure.align-right, object.align-right {
+    clear: right;
+    float: right;
+    margin-left: 1em;
+}
+
+img.align-center, .figure.align-center, object.align-center {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+.align-left {
+    text-align: left;
+}
+
+.align-center {
+    text-align: center;
+}
+
+.align-right {
+    text-align: right;
+}
+
+/* -- sidebars -------------------------------------------------------------- */
+
+div.sidebar {
+    margin: 0 0 0.5em 1em;
+    border: 1px solid #ddb;
+    padding: 7px 7px 0 7px;
+    background-color: #ffe;
+    width: 40%;
+    float: right;
+}
+
+p.sidebar-title {
+    font-weight: bold;
+}
+
+/* -- topics ---------------------------------------------------------------- */
+
+div.topic {
+    border: 1px solid #ccc;
+    padding: 7px 7px 0 7px;
+    margin: 10px 0 10px 0;
+}
+
+p.topic-title {
+    font-size: 1.1em;
+    font-weight: bold;
+    margin-top: 10px;
+}
+
+/* -- admonitions ----------------------------------------------------------- */
+
+div.admonition {
+    margin-top: 10px;
+    margin-bottom: 10px;
+    padding: 7px;
+}
+
+div.admonition dt {
+    font-weight: bold;
+}
+
+div.admonition dl {
+    margin-bottom: 0;
+}
+
+p.admonition-title {
+    margin: 0px 10px 5px 0px;
+    font-weight: bold;
+}
+
+div.body p.centered {
+    text-align: center;
+    margin-top: 25px;
+}
+
+/* -- tables ---------------------------------------------------------------- */
+
+table.docutils {
+    border: 0;
+    border-collapse: collapse;
+}
+
+table.docutils td, table.docutils th {
+    padding: 1px 8px 1px 5px;
+    border-top: 0;
+    border-left: 0;
+    border-right: 0;
+    border-bottom: 1px solid #aaa;
+}
+
+table.field-list td, table.field-list th {
+    border: 0 !important;
+}
+
+table.footnote td, table.footnote th {
+    border: 0 !important;
+}
+
+th {
+    text-align: left;
+    padding-right: 5px;
+}
+
+table.citation {
+    border-left: solid 1px gray;
+    margin-left: 1px;
+}
+
+table.citation td {
+    border-bottom: none;
+}
+
+/* -- other body styles ----------------------------------------------------- */
+
+ol.arabic {
+    list-style: decimal;
+}
+
+ol.loweralpha {
+    list-style: lower-alpha;
+}
+
+ol.upperalpha {
+    list-style: upper-alpha;
+}
+
+ol.lowerroman {
+    list-style: lower-roman;
+}
+
+ol.upperroman {
+    list-style: upper-roman;
+}
+
+dl {
+    margin-bottom: 15px;
+}
+
+dd p {
+    margin-top: 0px;
+}
+
+dd ul, dd table {
+    margin-bottom: 10px;
+}
+
+dd {
+    margin-top: 3px;
+    margin-bottom: 10px;
+    margin-left: 30px;
+}
+
+dt:target, .highlighted {
+    background-color: #fbe54e;
+}
+
+dl.glossary dt {
+    font-weight: bold;
+    font-size: 1.1em;
+}
+
+.field-list ul {
+    margin: 0;
+    padding-left: 1em;
+}
+
+.field-list p {
+    margin: 0;
+}
+
+.optional {
+    font-size: 1.3em;
+}
+
+.versionmodified {
+    font-style: italic;
+}
+
+.system-message {
+    background-color: #fda;
+    padding: 5px;
+    border: 3px solid red;
+}
+
+.footnote:target  {
+    background-color: #ffa;
+}
+
+.line-block {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+}
+
+.line-block .line-block {
+    margin-top: 0;
+    margin-bottom: 0;
+    margin-left: 1.5em;
+}
+
+.guilabel, .menuselection {
+    font-family: sans-serif;
+}
+
+.accelerator {
+    text-decoration: underline;
+}
+
+.classifier {
+    font-style: oblique;
+}
+
+abbr, acronym {
+    border-bottom: dotted 1px;
+    cursor: help;
+}
+
+/* -- code displays --------------------------------------------------------- */
+
+pre {
+    overflow: auto;
+    overflow-y: hidden;  /* fixes display issues on Chrome browsers */
+}
+
+td.linenos pre {
+    padding: 5px 0px;
+    border: 0;
+    background-color: transparent;
+    color: #aaa;
+}
+
+table.highlighttable {
+    margin-left: 0.5em;
+}
+
+table.highlighttable td {
+    padding: 0 0.5em 0 0.5em;
+}
+
+tt.descname {
+    background-color: transparent;
+    font-weight: bold;
+    font-size: 1.2em;
+}
+
+tt.descclassname {
+    background-color: transparent;
+}
+
+tt.xref, a tt {
+    background-color: transparent;
+    font-weight: bold;
+}
+
+h1 tt, h2 tt, h3 tt, h4 tt, h5 tt, h6 tt {
+    background-color: transparent;
+}
+
+.viewcode-link {
+    float: right;
+}
+
+.viewcode-back {
+    float: right;
+    font-family: sans-serif;
+}
+
+div.viewcode-block:target {
+    margin: -1px -10px;
+    padding: 0 10px;
+}
+
+/* -- math display ---------------------------------------------------------- */
+
+img.math {
+    vertical-align: middle;
+}
+
+div.body div.math p {
+    text-align: center;
+}
+
+span.eqno {
+    float: right;
+}
+
+/* -- printout stylesheet --------------------------------------------------- */
+
+@media print {
+    div.document,
+    div.documentwrapper,
+    div.bodywrapper {
+        margin: 0 !important;
+        width: 100%;
+    }
+
+    div.sphinxsidebar,
+    div.related,
+    div.footer,
+    #top-link {
+        display: none;
+    }
+}
\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/_static/comment-bright.png b/python/altgraph/doc/_build/html/_static/comment-bright.png
new file mode 100644
index 000000000..551517b8c
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/comment-bright.png
diff --git a/python/altgraph/doc/_build/html/_static/comment-close.png b/python/altgraph/doc/_build/html/_static/comment-close.png
new file mode 100644
index 000000000..09b54be46
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/comment-close.png
diff --git a/python/altgraph/doc/_build/html/_static/comment.png b/python/altgraph/doc/_build/html/_static/comment.png
new file mode 100644
index 000000000..92feb52b8
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/comment.png
diff --git a/python/altgraph/doc/_build/html/_static/doctools.js b/python/altgraph/doc/_build/html/_static/doctools.js
new file mode 100644
index 000000000..2036e5f5f
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/doctools.js
@@ -0,0 +1,238 @@
+/*
+ * doctools.js
+ * ~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilities for all documentation.
+ *
+ * :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/**
+ * select a different prefix for underscore
+ */
+$u = _.noConflict();
+
+/**
+ * make the code below compatible with browsers without
+ * an installed firebug like debugger
+if (!window.console || !console.firebug) {
+  var names = ["log", "debug", "info", "warn", "error", "assert", "dir",
+    "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace",
+    "profile", "profileEnd"];
+  window.console = {};
+  for (var i = 0; i < names.length; ++i)
+    window.console[names[i]] = function() {};
+}
+ */
+
+/**
+ * small helper function to urldecode strings
+ */
+jQuery.urldecode = function(x) {
+  return decodeURIComponent(x).replace(/\+/g, ' ');
+};
+
+/**
+ * small helper function to urlencode strings
+ */
+jQuery.urlencode = encodeURIComponent;
+
+/**
+ * This function returns the parsed url parameters of the
+ * current request. Multiple values per key are supported,
+ * it will always return arrays of strings for the value parts.
+ */
+jQuery.getQueryParameters = function(s) {
+  if (typeof s == 'undefined')
+    s = document.location.search;
+  var parts = s.substr(s.indexOf('?') + 1).split('&');
+  var result = {};
+  for (var i = 0; i < parts.length; i++) {
+    var tmp = parts[i].split('=', 2);
+    var key = jQuery.urldecode(tmp[0]);
+    var value = jQuery.urldecode(tmp[1]);
+    if (key in result)
+      result[key].push(value);
+    else
+      result[key] = [value];
+  }
+  return result;
+};
+
+/**
+ * highlight a given string on a jquery object by wrapping it in
+ * span elements with the given class name.
+ */
+jQuery.fn.highlightText = function(text, className) {
+  function highlight(node) {
+    if (node.nodeType == 3) {
+      var val = node.nodeValue;
+      var pos = val.toLowerCase().indexOf(text);
+      if (pos >= 0 && !jQuery(node.parentNode).hasClass(className)) {
+        var span = document.createElement("span");
+        span.className = className;
+        span.appendChild(document.createTextNode(val.substr(pos, text.length)));
+        node.parentNode.insertBefore(span, node.parentNode.insertBefore(
+          document.createTextNode(val.substr(pos + text.length)),
+          node.nextSibling));
+        node.nodeValue = val.substr(0, pos);
+      }
+    }
+    else if (!jQuery(node).is("button, select, textarea")) {
+      jQuery.each(node.childNodes, function() {
+        highlight(this);
+      });
+    }
+  }
+  return this.each(function() {
+    highlight(this);
+  });
+};
+
+/**
+ * Small JavaScript module for the documentation.
+ */
+var Documentation = {
+
+  init : function() {
+    this.fixFirefoxAnchorBug();
+    this.highlightSearchWords();
+    this.initIndexTable();
+  },
+
+  /**
+   * i18n support
+   */
+  TRANSLATIONS : {},
+  PLURAL_EXPR : function(n) { return n == 1 ? 0 : 1; },
+  LOCALE : 'unknown',
+
+  // gettext and ngettext don't access this so that the functions
+  // can safely bound to a different name (_ = Documentation.gettext)
+  gettext : function(string) {
+    var translated = Documentation.TRANSLATIONS[string];
+    if (typeof translated == 'undefined')
+      return string;
+    return (typeof translated == 'string') ? translated : translated[0];
+  },
+
+  ngettext : function(singular, plural, n) {
+    var translated = Documentation.TRANSLATIONS[singular];
+    if (typeof translated == 'undefined')
+      return (n == 1) ? singular : plural;
+    return translated[Documentation.PLURALEXPR(n)];
+  },
+
+  addTranslations : function(catalog) {
+    for (var key in catalog.messages)
+      this.TRANSLATIONS[key] = catalog.messages[key];
+    this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')');
+    this.LOCALE = catalog.locale;
+  },
+
+  /**
+   * add context elements like header anchor links
+   */
+  addContextElements : function() {
+    $('div[id] > :header:first').each(function() {
+      $('<a class="headerlink">\u00B6</a>').
+      attr('href', '#' + this.id).
+      attr('title', _('Permalink to this headline')).
+      appendTo(this);
+    });
+    $('dt[id]').each(function() {
+      $('<a class="headerlink">\u00B6</a>').
+      attr('href', '#' + this.id).
+      attr('title', _('Permalink to this definition')).
+      appendTo(this);
+    });
+  },
+
+  /**
+   * workaround a firefox stupidity
+   */
+  fixFirefoxAnchorBug : function() {
+    if (document.location.hash && $.browser.mozilla)
+      window.setTimeout(function() {
+        document.location.href += '';
+      }, 10);
+  },
+
+  /**
+   * highlight the search words provided in the url in the text
+   */
+  highlightSearchWords : function() {
+    var params = $.getQueryParameters();
+    var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : [];
+    if (terms.length) {
+      var body = $('div.body');
+      if (!body.length) {
+        body = $('body');
+      }
+      window.setTimeout(function() {
+        $.each(terms, function() {
+          body.highlightText(this.toLowerCase(), 'highlighted');
+        });
+      }, 10);
+      $('<p class="highlight-link"><a href="javascript:Documentation.' +
+        'hideSearchWords()">' + _('Hide Search Matches') + '</a></p>')
+          .appendTo($('#searchbox'));
+    }
+  },
+
+  /**
+   * init the domain index toggle buttons
+   */
+  initIndexTable : function() {
+    var togglers = $('img.toggler').click(function() {
+      var src = $(this).attr('src');
+      var idnum = $(this).attr('id').substr(7);
+      $('tr.cg-' + idnum).toggle();
+      if (src.substr(-9) == 'minus.png')
+        $(this).attr('src', src.substr(0, src.length-9) + 'plus.png');
+      else
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+  },
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+  /**
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+    var url = parts.join('/');
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+_ = Documentation.gettext;
+
+$(document).ready(function() {
+  Documentation.init();
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diff --git a/python/altgraph/doc/_build/html/_static/minus.png b/python/altgraph/doc/_build/html/_static/minus.png
new file mode 100644
index 000000000..da1c5620d
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/minus.png
diff --git a/python/altgraph/doc/_build/html/_static/nature.css b/python/altgraph/doc/_build/html/_static/nature.css
new file mode 100644
index 000000000..f46081870
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/nature.css
@@ -0,0 +1,245 @@
+/*
+ * nature.css_t
+ * ~~~~~~~~~~~~
+ *
+ * Sphinx stylesheet -- nature theme.
+ *
+ * :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+ 
+@import url("basic.css");
+ 
+/* -- page layout ----------------------------------------------------------- */
+ 
+body {
+    font-family: Arial, sans-serif;
+    font-size: 100%;
+    background-color: #111;
+    color: #555;
+    margin: 0;
+    padding: 0;
+}
+
+div.documentwrapper {
+    float: left;
+    width: 100%;
+}
+
+div.bodywrapper {
+    margin: 0 0 0 230px;
+}
+
+hr {
+    border: 1px solid #B1B4B6;
+}
+ 
+div.document {
+    background-color: #eee;
+}
+ 
+div.body {
+    background-color: #ffffff;
+    color: #3E4349;
+    padding: 0 30px 30px 30px;
+    font-size: 0.9em;
+}
+ 
+div.footer {
+    color: #555;
+    width: 100%;
+    padding: 13px 0;
+    text-align: center;
+    font-size: 75%;
+}
+ 
+div.footer a {
+    color: #444;
+    text-decoration: underline;
+}
+ 
+div.related {
+    background-color: #6BA81E;
+    line-height: 32px;
+    color: #fff;
+    text-shadow: 0px 1px 0 #444;
+    font-size: 0.9em;
+}
+ 
+div.related a {
+    color: #E2F3CC;
+}
+ 
+div.sphinxsidebar {
+    font-size: 0.75em;
+    line-height: 1.5em;
+}
+
+div.sphinxsidebarwrapper{
+    padding: 20px 0;
+}
+ 
+div.sphinxsidebar h3,
+div.sphinxsidebar h4 {
+    font-family: Arial, sans-serif;
+    color: #222;
+    font-size: 1.2em;
+    font-weight: normal;
+    margin: 0;
+    padding: 5px 10px;
+    background-color: #ddd;
+    text-shadow: 1px 1px 0 white
+}
+
+div.sphinxsidebar h4{
+    font-size: 1.1em;
+}
+ 
+div.sphinxsidebar h3 a {
+    color: #444;
+}
+ 
+ 
+div.sphinxsidebar p {
+    color: #888;
+    padding: 5px 20px;
+}
+ 
+div.sphinxsidebar p.topless {
+}
+ 
+div.sphinxsidebar ul {
+    margin: 10px 20px;
+    padding: 0;
+    color: #000;
+}
+ 
+div.sphinxsidebar a {
+    color: #444;
+}
+ 
+div.sphinxsidebar input {
+    border: 1px solid #ccc;
+    font-family: sans-serif;
+    font-size: 1em;
+}
+
+div.sphinxsidebar input[type=text]{
+    margin-left: 20px;
+}
+ 
+/* -- body styles ----------------------------------------------------------- */
+ 
+a {
+    color: #005B81;
+    text-decoration: none;
+}
+ 
+a:hover {
+    color: #E32E00;
+    text-decoration: underline;
+}
+ 
+div.body h1,
+div.body h2,
+div.body h3,
+div.body h4,
+div.body h5,
+div.body h6 {
+    font-family: Arial, sans-serif;
+    background-color: #BED4EB;
+    font-weight: normal;
+    color: #212224;
+    margin: 30px 0px 10px 0px;
+    padding: 5px 0 5px 10px;
+    text-shadow: 0px 1px 0 white
+}
+ 
+div.body h1 { border-top: 20px solid white; margin-top: 0; font-size: 200%; }
+div.body h2 { font-size: 150%; background-color: #C8D5E3; }
+div.body h3 { font-size: 120%; background-color: #D8DEE3; }
+div.body h4 { font-size: 110%; background-color: #D8DEE3; }
+div.body h5 { font-size: 100%; background-color: #D8DEE3; }
+div.body h6 { font-size: 100%; background-color: #D8DEE3; }
+ 
+a.headerlink {
+    color: #c60f0f;
+    font-size: 0.8em;
+    padding: 0 4px 0 4px;
+    text-decoration: none;
+}
+ 
+a.headerlink:hover {
+    background-color: #c60f0f;
+    color: white;
+}
+ 
+div.body p, div.body dd, div.body li {
+    line-height: 1.5em;
+}
+ 
+div.admonition p.admonition-title + p {
+    display: inline;
+}
+
+div.highlight{
+    background-color: white;
+}
+
+div.note {
+    background-color: #eee;
+    border: 1px solid #ccc;
+}
+ 
+div.seealso {
+    background-color: #ffc;
+    border: 1px solid #ff6;
+}
+ 
+div.topic {
+    background-color: #eee;
+}
+ 
+div.warning {
+    background-color: #ffe4e4;
+    border: 1px solid #f66;
+}
+ 
+p.admonition-title {
+    display: inline;
+}
+ 
+p.admonition-title:after {
+    content: ":";
+}
+ 
+pre {
+    padding: 10px;
+    background-color: White;
+    color: #222;
+    line-height: 1.2em;
+    border: 1px solid #C6C9CB;
+    font-size: 1.1em;
+    margin: 1.5em 0 1.5em 0;
+    -webkit-box-shadow: 1px 1px 1px #d8d8d8;
+    -moz-box-shadow: 1px 1px 1px #d8d8d8;
+}
+ 
+tt {
+    background-color: #ecf0f3;
+    color: #222;
+    /* padding: 1px 2px; */
+    font-size: 1.1em;
+    font-family: monospace;
+}
+
+.viewcode-back {
+    font-family: Arial, sans-serif;
+}
+
+div.viewcode-block:target {
+    background-color: #f4debf;
+    border-top: 1px solid #ac9;
+    border-bottom: 1px solid #ac9;
+}
\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/_static/plus.png b/python/altgraph/doc/_build/html/_static/plus.png
new file mode 100644
index 000000000..b3cb37425
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/plus.png
diff --git a/python/altgraph/doc/_build/html/_static/pygments.css b/python/altgraph/doc/_build/html/_static/pygments.css
new file mode 100644
index 000000000..d79caa151
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/pygments.css
@@ -0,0 +1,62 @@
+.highlight .hll { background-color: #ffffcc }
+.highlight  { background: #eeffcc; }
+.highlight .c { color: #408090; font-style: italic } /* Comment */
+.highlight .err { border: 1px solid #FF0000 } /* Error */
+.highlight .k { color: #007020; font-weight: bold } /* Keyword */
+.highlight .o { color: #666666 } /* Operator */
+.highlight .cm { color: #408090; font-style: italic } /* Comment.Multiline */
+.highlight .cp { color: #007020 } /* Comment.Preproc */
+.highlight .c1 { color: #408090; font-style: italic } /* Comment.Single */
+.highlight .cs { color: #408090; background-color: #fff0f0 } /* Comment.Special */
+.highlight .gd { color: #A00000 } /* Generic.Deleted */
+.highlight .ge { font-style: italic } /* Generic.Emph */
+.highlight .gr { color: #FF0000 } /* Generic.Error */
+.highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
+.highlight .gi { color: #00A000 } /* Generic.Inserted */
+.highlight .go { color: #333333 } /* Generic.Output */
+.highlight .gp { color: #c65d09; font-weight: bold } /* Generic.Prompt */
+.highlight .gs { font-weight: bold } /* Generic.Strong */
+.highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
+.highlight .kc { color: #007020; font-weight: bold } /* Keyword.Constant */
+.highlight .kd { color: #007020; font-weight: bold } /* Keyword.Declaration */
+.highlight .kn { color: #007020; font-weight: bold } /* Keyword.Namespace */
+.highlight .kp { color: #007020 } /* Keyword.Pseudo */
+.highlight .kr { color: #007020; font-weight: bold } /* Keyword.Reserved */
+.highlight .kt { color: #902000 } /* Keyword.Type */
+.highlight .m { color: #208050 } /* Literal.Number */
+.highlight .s { color: #4070a0 } /* Literal.String */
+.highlight .na { color: #4070a0 } /* Name.Attribute */
+.highlight .nb { color: #007020 } /* Name.Builtin */
+.highlight .nc { color: #0e84b5; font-weight: bold } /* Name.Class */
+.highlight .no { color: #60add5 } /* Name.Constant */
+.highlight .nd { color: #555555; font-weight: bold } /* Name.Decorator */
+.highlight .ni { color: #d55537; font-weight: bold } /* Name.Entity */
+.highlight .ne { color: #007020 } /* Name.Exception */
+.highlight .nf { color: #06287e } /* Name.Function */
+.highlight .nl { color: #002070; font-weight: bold } /* Name.Label */
+.highlight .nn { color: #0e84b5; font-weight: bold } /* Name.Namespace */
+.highlight .nt { color: #062873; font-weight: bold } /* Name.Tag */
+.highlight .nv { color: #bb60d5 } /* Name.Variable */
+.highlight .ow { color: #007020; font-weight: bold } /* Operator.Word */
+.highlight .w { color: #bbbbbb } /* Text.Whitespace */
+.highlight .mf { color: #208050 } /* Literal.Number.Float */
+.highlight .mh { color: #208050 } /* Literal.Number.Hex */
+.highlight .mi { color: #208050 } /* Literal.Number.Integer */
+.highlight .mo { color: #208050 } /* Literal.Number.Oct */
+.highlight .sb { color: #4070a0 } /* Literal.String.Backtick */
+.highlight .sc { color: #4070a0 } /* Literal.String.Char */
+.highlight .sd { color: #4070a0; font-style: italic } /* Literal.String.Doc */
+.highlight .s2 { color: #4070a0 } /* Literal.String.Double */
+.highlight .se { color: #4070a0; font-weight: bold } /* Literal.String.Escape */
+.highlight .sh { color: #4070a0 } /* Literal.String.Heredoc */
+.highlight .si { color: #70a0d0; font-style: italic } /* Literal.String.Interpol */
+.highlight .sx { color: #c65d09 } /* Literal.String.Other */
+.highlight .sr { color: #235388 } /* Literal.String.Regex */
+.highlight .s1 { color: #4070a0 } /* Literal.String.Single */
+.highlight .ss { color: #517918 } /* Literal.String.Symbol */
+.highlight .bp { color: #007020 } /* Name.Builtin.Pseudo */
+.highlight .vc { color: #bb60d5 } /* Name.Variable.Class */
+.highlight .vg { color: #bb60d5 } /* Name.Variable.Global */
+.highlight .vi { color: #bb60d5 } /* Name.Variable.Instance */
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\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/_static/searchtools.js b/python/altgraph/doc/_build/html/_static/searchtools.js
new file mode 100644
index 000000000..f5c7e5fee
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/searchtools.js
@@ -0,0 +1,622 @@
+/*
+ * searchtools.js_t
+ * ~~~~~~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilties for the full-text search.
+ *
+ * :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+
+/**
+ * Porter Stemmer
+ */
+var Stemmer = function() {
+
+  var step2list = {
+    ational: 'ate',
+    tional: 'tion',
+    enci: 'ence',
+    anci: 'ance',
+    izer: 'ize',
+    bli: 'ble',
+    alli: 'al',
+    entli: 'ent',
+    eli: 'e',
+    ousli: 'ous',
+    ization: 'ize',
+    ation: 'ate',
+    ator: 'ate',
+    alism: 'al',
+    iveness: 'ive',
+    fulness: 'ful',
+    ousness: 'ous',
+    aliti: 'al',
+    iviti: 'ive',
+    biliti: 'ble',
+    logi: 'log'
+  };
+
+  var step3list = {
+    icate: 'ic',
+    ative: '',
+    alize: 'al',
+    iciti: 'ic',
+    ical: 'ic',
+    ful: '',
+    ness: ''
+  };
+
+  var c = "[^aeiou]";          // consonant
+  var v = "[aeiouy]";          // vowel
+  var C = c + "[^aeiouy]*";    // consonant sequence
+  var V = v + "[aeiou]*";      // vowel sequence
+
+  var mgr0 = "^(" + C + ")?" + V + C;                      // [C]VC... is m>0
+  var meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$";    // [C]VC[V] is m=1
+  var mgr1 = "^(" + C + ")?" + V + C + V + C;              // [C]VCVC... is m>1
+  var s_v   = "^(" + C + ")?" + v;                         // vowel in stem
+
+  this.stemWord = function (w) {
+    var stem;
+    var suffix;
+    var firstch;
+    var origword = w;
+
+    if (w.length < 3)
+      return w;
+
+    var re;
+    var re2;
+    var re3;
+    var re4;
+
+    firstch = w.substr(0,1);
+    if (firstch == "y")
+      w = firstch.toUpperCase() + w.substr(1);
+
+    // Step 1a
+    re = /^(.+?)(ss|i)es$/;
+    re2 = /^(.+?)([^s])s$/;
+
+    if (re.test(w))
+      w = w.replace(re,"$1$2");
+    else if (re2.test(w))
+      w = w.replace(re2,"$1$2");
+
+    // Step 1b
+    re = /^(.+?)eed$/;
+    re2 = /^(.+?)(ed|ing)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      re = new RegExp(mgr0);
+      if (re.test(fp[1])) {
+        re = /.$/;
+        w = w.replace(re,"");
+      }
+    }
+    else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1];
+      re2 = new RegExp(s_v);
+      if (re2.test(stem)) {
+        w = stem;
+        re2 = /(at|bl|iz)$/;
+        re3 = new RegExp("([^aeiouylsz])\\1$");
+        re4 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+        if (re2.test(w))
+          w = w + "e";
+        else if (re3.test(w)) {
+          re = /.$/;
+          w = w.replace(re,"");
+        }
+        else if (re4.test(w))
+          w = w + "e";
+      }
+    }
+
+    // Step 1c
+    re = /^(.+?)y$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(s_v);
+      if (re.test(stem))
+        w = stem + "i";
+    }
+
+    // Step 2
+    re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = new RegExp(mgr0);
+      if (re.test(stem))
+        w = stem + step2list[suffix];
+    }
+
+    // Step 3
+    re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = new RegExp(mgr0);
+      if (re.test(stem))
+        w = stem + step3list[suffix];
+    }
+
+    // Step 4
+    re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
+    re2 = /^(.+?)(s|t)(ion)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(mgr1);
+      if (re.test(stem))
+        w = stem;
+    }
+    else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1] + fp[2];
+      re2 = new RegExp(mgr1);
+      if (re2.test(stem))
+        w = stem;
+    }
+
+    // Step 5
+    re = /^(.+?)e$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(mgr1);
+      re2 = new RegExp(meq1);
+      re3 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+      if (re.test(stem) || (re2.test(stem) && !(re3.test(stem))))
+        w = stem;
+    }
+    re = /ll$/;
+    re2 = new RegExp(mgr1);
+    if (re.test(w) && re2.test(w)) {
+      re = /.$/;
+      w = w.replace(re,"");
+    }
+
+    // and turn initial Y back to y
+    if (firstch == "y")
+      w = firstch.toLowerCase() + w.substr(1);
+    return w;
+  }
+}
+
+
+
+/**
+ * Simple result scoring code.
+ */
+var Scorer = {
+  // Implement the following function to further tweak the score for each result
+  // The function takes a result array [filename, title, anchor, descr, score]
+  // and returns the new score.
+  /*
+  score: function(result) {
+    return result[4];
+  },
+  */
+
+  // query matches the full name of an object
+  objNameMatch: 11,
+  // or matches in the last dotted part of the object name
+  objPartialMatch: 6,
+  // Additive scores depending on the priority of the object
+  objPrio: {0:  15,   // used to be importantResults
+            1:  5,   // used to be objectResults
+            2: -5},  // used to be unimportantResults
+  //  Used when the priority is not in the mapping.
+  objPrioDefault: 0,
+
+  // query found in title
+  title: 15,
+  // query found in terms
+  term: 5
+};
+
+
+/**
+ * Search Module
+ */
+var Search = {
+
+  _index : null,
+  _queued_query : null,
+  _pulse_status : -1,
+
+  init : function() {
+      var params = $.getQueryParameters();
+      if (params.q) {
+          var query = params.q[0];
+          $('input[name="q"]')[0].value = query;
+          this.performSearch(query);
+      }
+  },
+
+  loadIndex : function(url) {
+    $.ajax({type: "GET", url: url, data: null,
+            dataType: "script", cache: true,
+            complete: function(jqxhr, textstatus) {
+              if (textstatus != "success") {
+                document.getElementById("searchindexloader").src = url;
+              }
+            }});
+  },
+
+  setIndex : function(index) {
+    var q;
+    this._index = index;
+    if ((q = this._queued_query) !== null) {
+      this._queued_query = null;
+      Search.query(q);
+    }
+  },
+
+  hasIndex : function() {
+      return this._index !== null;
+  },
+
+  deferQuery : function(query) {
+      this._queued_query = query;
+  },
+
+  stopPulse : function() {
+      this._pulse_status = 0;
+  },
+
+  startPulse : function() {
+    if (this._pulse_status >= 0)
+        return;
+    function pulse() {
+      var i;
+      Search._pulse_status = (Search._pulse_status + 1) % 4;
+      var dotString = '';
+      for (i = 0; i < Search._pulse_status; i++)
+        dotString += '.';
+      Search.dots.text(dotString);
+      if (Search._pulse_status > -1)
+        window.setTimeout(pulse, 500);
+    }
+    pulse();
+  },
+
+  /**
+   * perform a search for something (or wait until index is loaded)
+   */
+  performSearch : function(query) {
+    // create the required interface elements
+    this.out = $('#search-results');
+    this.title = $('<h2>' + _('Searching') + '</h2>').appendTo(this.out);
+    this.dots = $('<span></span>').appendTo(this.title);
+    this.status = $('<p style="display: none"></p>').appendTo(this.out);
+    this.output = $('<ul class="search"/>').appendTo(this.out);
+
+    $('#search-progress').text(_('Preparing search...'));
+    this.startPulse();
+
+    // index already loaded, the browser was quick!
+    if (this.hasIndex())
+      this.query(query);
+    else
+      this.deferQuery(query);
+  },
+
+  /**
+   * execute search (requires search index to be loaded)
+   */
+  query : function(query) {
+    var i;
+    var stopwords = ["a","and","are","as","at","be","but","by","for","if","in","into","is","it","near","no","not","of","on","or","such","that","the","their","then","there","these","they","this","to","was","will","with"];
+
+    // stem the searchterms and add them to the correct list
+    var stemmer = new Stemmer();
+    var searchterms = [];
+    var excluded = [];
+    var hlterms = [];
+    var tmp = query.split(/\s+/);
+    var objectterms = [];
+    for (i = 0; i < tmp.length; i++) {
+      if (tmp[i] !== "") {
+          objectterms.push(tmp[i].toLowerCase());
+      }
+
+      if ($u.indexOf(stopwords, tmp[i].toLowerCase()) != -1 || tmp[i].match(/^\d+$/) ||
+          tmp[i] === "") {
+        // skip this "word"
+        continue;
+      }
+      // stem the word
+      var word = stemmer.stemWord(tmp[i].toLowerCase());
+      var toAppend;
+      // select the correct list
+      if (word[0] == '-') {
+        toAppend = excluded;
+        word = word.substr(1);
+      }
+      else {
+        toAppend = searchterms;
+        hlterms.push(tmp[i].toLowerCase());
+      }
+      // only add if not already in the list
+      if (!$u.contains(toAppend, word))
+        toAppend.push(word);
+    }
+    var highlightstring = '?highlight=' + $.urlencode(hlterms.join(" "));
+
+    // console.debug('SEARCH: searching for:');
+    // console.info('required: ', searchterms);
+    // console.info('excluded: ', excluded);
+
+    // prepare search
+    var terms = this._index.terms;
+    var titleterms = this._index.titleterms;
+
+    // array of [filename, title, anchor, descr, score]
+    var results = [];
+    $('#search-progress').empty();
+
+    // lookup as object
+    for (i = 0; i < objectterms.length; i++) {
+      var others = [].concat(objectterms.slice(0, i),
+                             objectterms.slice(i+1, objectterms.length));
+      results = results.concat(this.performObjectSearch(objectterms[i], others));
+    }
+
+    // lookup as search terms in fulltext
+    results = results.concat(this.performTermsSearch(searchterms, excluded, terms, Scorer.term))
+                     .concat(this.performTermsSearch(searchterms, excluded, titleterms, Scorer.title));
+
+    // let the scorer override scores with a custom scoring function
+    if (Scorer.score) {
+      for (i = 0; i < results.length; i++)
+        results[i][4] = Scorer.score(results[i]);
+    }
+
+    // now sort the results by score (in opposite order of appearance, since the
+    // display function below uses pop() to retrieve items) and then
+    // alphabetically
+    results.sort(function(a, b) {
+      var left = a[4];
+      var right = b[4];
+      if (left > right) {
+        return 1;
+      } else if (left < right) {
+        return -1;
+      } else {
+        // same score: sort alphabetically
+        left = a[1].toLowerCase();
+        right = b[1].toLowerCase();
+        return (left > right) ? -1 : ((left < right) ? 1 : 0);
+      }
+    });
+
+    // for debugging
+    //Search.lastresults = results.slice();  // a copy
+    //console.info('search results:', Search.lastresults);
+
+    // print the results
+    var resultCount = results.length;
+    function displayNextItem() {
+      // results left, load the summary and display it
+      if (results.length) {
+        var item = results.pop();
+        var listItem = $('<li style="display:none"></li>');
+        if (DOCUMENTATION_OPTIONS.FILE_SUFFIX === '') {
+          // dirhtml builder
+          var dirname = item[0] + '/';
+          if (dirname.match(/\/index\/$/)) {
+            dirname = dirname.substring(0, dirname.length-6);
+          } else if (dirname == 'index/') {
+            dirname = '';
+          }
+          listItem.append($('<a/>').attr('href',
+            DOCUMENTATION_OPTIONS.URL_ROOT + dirname +
+            highlightstring + item[2]).html(item[1]));
+        } else {
+          // normal html builders
+          listItem.append($('<a/>').attr('href',
+            item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX +
+            highlightstring + item[2]).html(item[1]));
+        }
+        if (item[3]) {
+          listItem.append($('<span> (' + item[3] + ')</span>'));
+          Search.output.append(listItem);
+          listItem.slideDown(5, function() {
+            displayNextItem();
+          });
+        } else if (DOCUMENTATION_OPTIONS.HAS_SOURCE) {
+          $.ajax({url: DOCUMENTATION_OPTIONS.URL_ROOT + '_sources/' + item[0] + '.txt',
+                  dataType: "text",
+                  complete: function(jqxhr, textstatus) {
+                    var data = jqxhr.responseText;
+                    if (data !== '') {
+                      listItem.append(Search.makeSearchSummary(data, searchterms, hlterms));
+                    }
+                    Search.output.append(listItem);
+                    listItem.slideDown(5, function() {
+                      displayNextItem();
+                    });
+                  }});
+        } else {
+          // no source available, just display title
+          Search.output.append(listItem);
+          listItem.slideDown(5, function() {
+            displayNextItem();
+          });
+        }
+      }
+      // search finished, update title and status message
+      else {
+        Search.stopPulse();
+        Search.title.text(_('Search Results'));
+        if (!resultCount)
+          Search.status.text(_('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.'));
+        else
+            Search.status.text(_('Search finished, found %s page(s) matching the search query.').replace('%s', resultCount));
+        Search.status.fadeIn(500);
+      }
+    }
+    displayNextItem();
+  },
+
+  /**
+   * search for object names
+   */
+  performObjectSearch : function(object, otherterms) {
+    var filenames = this._index.filenames;
+    var objects = this._index.objects;
+    var objnames = this._index.objnames;
+    var titles = this._index.titles;
+
+    var i;
+    var results = [];
+
+    for (var prefix in objects) {
+      for (var name in objects[prefix]) {
+        var fullname = (prefix ? prefix + '.' : '') + name;
+        if (fullname.toLowerCase().indexOf(object) > -1) {
+          var score = 0;
+          var parts = fullname.split('.');
+          // check for different match types: exact matches of full name or
+          // "last name" (i.e. last dotted part)
+          if (fullname == object || parts[parts.length - 1] == object) {
+            score += Scorer.objNameMatch;
+          // matches in last name
+          } else if (parts[parts.length - 1].indexOf(object) > -1) {
+            score += Scorer.objPartialMatch;
+          }
+          var match = objects[prefix][name];
+          var objname = objnames[match[1]][2];
+          var title = titles[match[0]];
+          // If more than one term searched for, we require other words to be
+          // found in the name/title/description
+          if (otherterms.length > 0) {
+            var haystack = (prefix + ' ' + name + ' ' +
+                            objname + ' ' + title).toLowerCase();
+            var allfound = true;
+            for (i = 0; i < otherterms.length; i++) {
+              if (haystack.indexOf(otherterms[i]) == -1) {
+                allfound = false;
+                break;
+              }
+            }
+            if (!allfound) {
+              continue;
+            }
+          }
+          var descr = objname + _(', in ') + title;
+
+          var anchor = match[3];
+          if (anchor === '')
+            anchor = fullname;
+          else if (anchor == '-')
+            anchor = objnames[match[1]][1] + '-' + fullname;
+          // add custom score for some objects according to scorer
+          if (Scorer.objPrio.hasOwnProperty(match[2])) {
+            score += Scorer.objPrio[match[2]];
+          } else {
+            score += Scorer.objPrioDefault;
+          }
+          results.push([filenames[match[0]], fullname, '#'+anchor, descr, score]);
+        }
+      }
+    }
+
+    return results;
+  },
+
+  /**
+   * search for full-text terms in the index
+   */
+  performTermsSearch : function(searchterms, excluded, terms, score) {
+    var filenames = this._index.filenames;
+    var titles = this._index.titles;
+
+    var i, j, file, files;
+    var fileMap = {};
+    var results = [];
+
+    // perform the search on the required terms
+    for (i = 0; i < searchterms.length; i++) {
+      var word = searchterms[i];
+      // no match but word was a required one
+      if ((files = terms[word]) === undefined)
+        break;
+      if (files.length === undefined) {
+        files = [files];
+      }
+      // create the mapping
+      for (j = 0; j < files.length; j++) {
+        file = files[j];
+        if (file in fileMap)
+          fileMap[file].push(word);
+        else
+          fileMap[file] = [word];
+      }
+    }
+
+    // now check if the files don't contain excluded terms
+    for (file in fileMap) {
+      var valid = true;
+
+      // check if all requirements are matched
+      if (fileMap[file].length != searchterms.length)
+          continue;
+
+      // ensure that none of the excluded terms is in the search result
+      for (i = 0; i < excluded.length; i++) {
+        if (terms[excluded[i]] == file ||
+          $u.contains(terms[excluded[i]] || [], file)) {
+          valid = false;
+          break;
+        }
+      }
+
+      // if we have still a valid result we can add it to the result list
+      if (valid) {
+        results.push([filenames[file], titles[file], '', null, score]);
+      }
+    }
+    return results;
+  },
+
+  /**
+   * helper function to return a node containing the
+   * search summary for a given text. keywords is a list
+   * of stemmed words, hlwords is the list of normal, unstemmed
+   * words. the first one is used to find the occurance, the
+   * latter for highlighting it.
+   */
+  makeSearchSummary : function(text, keywords, hlwords) {
+    var textLower = text.toLowerCase();
+    var start = 0;
+    $.each(keywords, function() {
+      var i = textLower.indexOf(this.toLowerCase());
+      if (i > -1)
+        start = i;
+    });
+    start = Math.max(start - 120, 0);
+    var excerpt = ((start > 0) ? '...' : '') +
+      $.trim(text.substr(start, 240)) +
+      ((start + 240 - text.length) ? '...' : '');
+    var rv = $('<div class="context"></div>').text(excerpt);
+    $.each(hlwords, function() {
+      rv = rv.highlightText(this, 'highlighted');
+    });
+    return rv;
+  }
+};
+
+$(document).ready(function() {
+  Search.init();
+});
\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/_static/underscore.js b/python/altgraph/doc/_build/html/_static/underscore.js
new file mode 100644
index 000000000..5b55f32be
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/underscore.js
@@ -0,0 +1,31 @@
+// Underscore.js 1.3.1
+// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+(function(){function q(a,c,d){if(a===c)return a!==0||1/a==1/c;if(a==null||c==null)return a===c;if(a._chain)a=a._wrapped;if(c._chain)c=c._wrapped;if(a.isEqual&&b.isFunction(a.isEqual))return a.isEqual(c);if(c.isEqual&&b.isFunction(c.isEqual))return c.isEqual(a);var e=l.call(a);if(e!=l.call(c))return false;switch(e){case "[object String]":return a==String(c);case "[object Number]":return a!=+a?c!=+c:a==0?1/a==1/c:a==+c;case "[object Date]":case "[object Boolean]":return+a==+c;case "[object RegExp]":return a.source==
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+b.isArguments=function(a){return l.call(a)=="[object Arguments]"};if(!b.isArguments(arguments))b.isArguments=function(a){return!(!a||!b.has(a,"callee"))};b.isFunction=function(a){return l.call(a)=="[object Function]"};b.isString=function(a){return l.call(a)=="[object String]"};b.isNumber=function(a){return l.call(a)=="[object Number]"};b.isNaN=function(a){return a!==a};b.isBoolean=function(a){return a===true||a===false||l.call(a)=="[object Boolean]"};b.isDate=function(a){return l.call(a)=="[object Date]"};
+b.isRegExp=function(a){return l.call(a)=="[object RegExp]"};b.isNull=function(a){return a===null};b.isUndefined=function(a){return a===void 0};b.has=function(a,b){return I.call(a,b)};b.noConflict=function(){r._=G;return this};b.identity=function(a){return a};b.times=function(a,b,d){for(var e=0;e<a;e++)b.call(d,e)};b.escape=function(a){return(""+a).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;").replace(/'/g,"&#x27;").replace(/\//g,"&#x2F;")};b.mixin=function(a){j(b.functions(a),
+function(c){K(c,b[c]=a[c])})};var L=0;b.uniqueId=function(a){var b=L++;return a?a+b:b};b.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var t=/.^/,u=function(a){return a.replace(/\\\\/g,"\\").replace(/\\'/g,"'")};b.template=function(a,c){var d=b.templateSettings,d="var __p=[],print=function(){__p.push.apply(__p,arguments);};with(obj||{}){__p.push('"+a.replace(/\\/g,"\\\\").replace(/'/g,"\\'").replace(d.escape||t,function(a,b){return"',_.escape("+
+u(b)+"),'"}).replace(d.interpolate||t,function(a,b){return"',"+u(b)+",'"}).replace(d.evaluate||t,function(a,b){return"');"+u(b).replace(/[\r\n\t]/g," ")+";__p.push('"}).replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/\t/g,"\\t")+"');}return __p.join('');",e=new Function("obj","_",d);return c?e(c,b):function(a){return e.call(this,a,b)}};b.chain=function(a){return b(a).chain()};var m=function(a){this._wrapped=a};b.prototype=m.prototype;var v=function(a,c){return c?b(a).chain():a},K=function(a,c){m.prototype[a]=
+function(){var a=i.call(arguments);H.call(a,this._wrapped);return v(c.apply(b,a),this._chain)}};b.mixin(b);j("pop,push,reverse,shift,sort,splice,unshift".split(","),function(a){var b=k[a];m.prototype[a]=function(){var d=this._wrapped;b.apply(d,arguments);var e=d.length;(a=="shift"||a=="splice")&&e===0&&delete d[0];return v(d,this._chain)}});j(["concat","join","slice"],function(a){var b=k[a];m.prototype[a]=function(){return v(b.apply(this._wrapped,arguments),this._chain)}});m.prototype.chain=function(){this._chain=
+true;return this};m.prototype.value=function(){return this._wrapped}}).call(this);
diff --git a/python/altgraph/doc/_build/html/_static/up-pressed.png b/python/altgraph/doc/_build/html/_static/up-pressed.png
new file mode 100644
index 000000000..8bd587afe
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/up-pressed.png
diff --git a/python/altgraph/doc/_build/html/_static/up.png b/python/altgraph/doc/_build/html/_static/up.png
new file mode 100644
index 000000000..b94625680
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/up.png
diff --git a/python/altgraph/doc/_build/html/_static/websupport.js b/python/altgraph/doc/_build/html/_static/websupport.js
new file mode 100644
index 000000000..19fcda564
--- /dev/null
+++ b/python/altgraph/doc/_build/html/_static/websupport.js
@@ -0,0 +1,808 @@
+/*
+ * websupport.js
+ * ~~~~~~~~~~~~~
+ *
+ * sphinx.websupport utilties for all documentation.
+ *
+ * :copyright: Copyright 2007-2013 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+(function($) {
+  $.fn.autogrow = function() {
+    return this.each(function() {
+    var textarea = this;
+
+    $.fn.autogrow.resize(textarea);
+
+    $(textarea)
+      .focus(function() {
+        textarea.interval = setInterval(function() {
+          $.fn.autogrow.resize(textarea);
+        }, 500);
+      })
+      .blur(function() {
+        clearInterval(textarea.interval);
+      });
+    });
+  };
+
+  $.fn.autogrow.resize = function(textarea) {
+    var lineHeight = parseInt($(textarea).css('line-height'), 10);
+    var lines = textarea.value.split('\n');
+    var columns = textarea.cols;
+    var lineCount = 0;
+    $.each(lines, function() {
+      lineCount += Math.ceil(this.length / columns) || 1;
+    });
+    var height = lineHeight * (lineCount + 1);
+    $(textarea).css('height', height);
+  };
+})(jQuery);
+
+(function($) {
+  var comp, by;
+
+  function init() {
+    initEvents();
+    initComparator();
+  }
+
+  function initEvents() {
+    $('a.comment-close').live("click", function(event) {
+      event.preventDefault();
+      hide($(this).attr('id').substring(2));
+    });
+    $('a.vote').live("click", function(event) {
+      event.preventDefault();
+      handleVote($(this));
+    });
+    $('a.reply').live("click", function(event) {
+      event.preventDefault();
+      openReply($(this).attr('id').substring(2));
+    });
+    $('a.close-reply').live("click", function(event) {
+      event.preventDefault();
+      closeReply($(this).attr('id').substring(2));
+    });
+    $('a.sort-option').live("click", function(event) {
+      event.preventDefault();
+      handleReSort($(this));
+    });
+    $('a.show-proposal').live("click", function(event) {
+      event.preventDefault();
+      showProposal($(this).attr('id').substring(2));
+    });
+    $('a.hide-proposal').live("click", function(event) {
+      event.preventDefault();
+      hideProposal($(this).attr('id').substring(2));
+    });
+    $('a.show-propose-change').live("click", function(event) {
+      event.preventDefault();
+      showProposeChange($(this).attr('id').substring(2));
+    });
+    $('a.hide-propose-change').live("click", function(event) {
+      event.preventDefault();
+      hideProposeChange($(this).attr('id').substring(2));
+    });
+    $('a.accept-comment').live("click", function(event) {
+      event.preventDefault();
+      acceptComment($(this).attr('id').substring(2));
+    });
+    $('a.delete-comment').live("click", function(event) {
+      event.preventDefault();
+      deleteComment($(this).attr('id').substring(2));
+    });
+    $('a.comment-markup').live("click", function(event) {
+      event.preventDefault();
+      toggleCommentMarkupBox($(this).attr('id').substring(2));
+    });
+  }
+
+  /**
+   * Set comp, which is a comparator function used for sorting and
+   * inserting comments into the list.
+   */
+  function setComparator() {
+    // If the first three letters are "asc", sort in ascending order
+    // and remove the prefix.
+    if (by.substring(0,3) == 'asc') {
+      var i = by.substring(3);
+      comp = function(a, b) { return a[i] - b[i]; };
+    } else {
+      // Otherwise sort in descending order.
+      comp = function(a, b) { return b[by] - a[by]; };
+    }
+
+    // Reset link styles and format the selected sort option.
+    $('a.sel').attr('href', '#').removeClass('sel');
+    $('a.by' + by).removeAttr('href').addClass('sel');
+  }
+
+  /**
+   * Create a comp function. If the user has preferences stored in
+   * the sortBy cookie, use those, otherwise use the default.
+   */
+  function initComparator() {
+    by = 'rating'; // Default to sort by rating.
+    // If the sortBy cookie is set, use that instead.
+    if (document.cookie.length > 0) {
+      var start = document.cookie.indexOf('sortBy=');
+      if (start != -1) {
+        start = start + 7;
+        var end = document.cookie.indexOf(";", start);
+        if (end == -1) {
+          end = document.cookie.length;
+          by = unescape(document.cookie.substring(start, end));
+        }
+      }
+    }
+    setComparator();
+  }
+
+  /**
+   * Show a comment div.
+   */
+  function show(id) {
+    $('#ao' + id).hide();
+    $('#ah' + id).show();
+    var context = $.extend({id: id}, opts);
+    var popup = $(renderTemplate(popupTemplate, context)).hide();
+    popup.find('textarea[name="proposal"]').hide();
+    popup.find('a.by' + by).addClass('sel');
+    var form = popup.find('#cf' + id);
+    form.submit(function(event) {
+      event.preventDefault();
+      addComment(form);
+    });
+    $('#s' + id).after(popup);
+    popup.slideDown('fast', function() {
+      getComments(id);
+    });
+  }
+
+  /**
+   * Hide a comment div.
+   */
+  function hide(id) {
+    $('#ah' + id).hide();
+    $('#ao' + id).show();
+    var div = $('#sc' + id);
+    div.slideUp('fast', function() {
+      div.remove();
+    });
+  }
+
+  /**
+   * Perform an ajax request to get comments for a node
+   * and insert the comments into the comments tree.
+   */
+  function getComments(id) {
+    $.ajax({
+     type: 'GET',
+     url: opts.getCommentsURL,
+     data: {node: id},
+     success: function(data, textStatus, request) {
+       var ul = $('#cl' + id);
+       var speed = 100;
+       $('#cf' + id)
+         .find('textarea[name="proposal"]')
+         .data('source', data.source);
+
+       if (data.comments.length === 0) {
+         ul.html('<li>No comments yet.</li>');
+         ul.data('empty', true);
+       } else {
+         // If there are comments, sort them and put them in the list.
+         var comments = sortComments(data.comments);
+         speed = data.comments.length * 100;
+         appendComments(comments, ul);
+         ul.data('empty', false);
+       }
+       $('#cn' + id).slideUp(speed + 200);
+       ul.slideDown(speed);
+     },
+     error: function(request, textStatus, error) {
+       showError('Oops, there was a problem retrieving the comments.');
+     },
+     dataType: 'json'
+    });
+  }
+
+  /**
+   * Add a comment via ajax and insert the comment into the comment tree.
+   */
+  function addComment(form) {
+    var node_id = form.find('input[name="node"]').val();
+    var parent_id = form.find('input[name="parent"]').val();
+    var text = form.find('textarea[name="comment"]').val();
+    var proposal = form.find('textarea[name="proposal"]').val();
+
+    if (text == '') {
+      showError('Please enter a comment.');
+      return;
+    }
+
+    // Disable the form that is being submitted.
+    form.find('textarea,input').attr('disabled', 'disabled');
+
+    // Send the comment to the server.
+    $.ajax({
+      type: "POST",
+      url: opts.addCommentURL,
+      dataType: 'json',
+      data: {
+        node: node_id,
+        parent: parent_id,
+        text: text,
+        proposal: proposal
+      },
+      success: function(data, textStatus, error) {
+        // Reset the form.
+        if (node_id) {
+          hideProposeChange(node_id);
+        }
+        form.find('textarea')
+          .val('')
+          .add(form.find('input'))
+          .removeAttr('disabled');
+	var ul = $('#cl' + (node_id || parent_id));
+        if (ul.data('empty')) {
+          $(ul).empty();
+          ul.data('empty', false);
+        }
+        insertComment(data.comment);
+        var ao = $('#ao' + node_id);
+        ao.find('img').attr({'src': opts.commentBrightImage});
+        if (node_id) {
+          // if this was a "root" comment, remove the commenting box
+          // (the user can get it back by reopening the comment popup)
+          $('#ca' + node_id).slideUp();
+        }
+      },
+      error: function(request, textStatus, error) {
+        form.find('textarea,input').removeAttr('disabled');
+        showError('Oops, there was a problem adding the comment.');
+      }
+    });
+  }
+
+  /**
+   * Recursively append comments to the main comment list and children
+   * lists, creating the comment tree.
+   */
+  function appendComments(comments, ul) {
+    $.each(comments, function() {
+      var div = createCommentDiv(this);
+      ul.append($(document.createElement('li')).html(div));
+      appendComments(this.children, div.find('ul.comment-children'));
+      // To avoid stagnating data, don't store the comments children in data.
+      this.children = null;
+      div.data('comment', this);
+    });
+  }
+
+  /**
+   * After adding a new comment, it must be inserted in the correct
+   * location in the comment tree.
+   */
+  function insertComment(comment) {
+    var div = createCommentDiv(comment);
+
+    // To avoid stagnating data, don't store the comments children in data.
+    comment.children = null;
+    div.data('comment', comment);
+
+    var ul = $('#cl' + (comment.node || comment.parent));
+    var siblings = getChildren(ul);
+
+    var li = $(document.createElement('li'));
+    li.hide();
+
+    // Determine where in the parents children list to insert this comment.
+    for(i=0; i < siblings.length; i++) {
+      if (comp(comment, siblings[i]) <= 0) {
+        $('#cd' + siblings[i].id)
+          .parent()
+          .before(li.html(div));
+        li.slideDown('fast');
+        return;
+      }
+    }
+
+    // If we get here, this comment rates lower than all the others,
+    // or it is the only comment in the list.
+    ul.append(li.html(div));
+    li.slideDown('fast');
+  }
+
+  function acceptComment(id) {
+    $.ajax({
+      type: 'POST',
+      url: opts.acceptCommentURL,
+      data: {id: id},
+      success: function(data, textStatus, request) {
+        $('#cm' + id).fadeOut('fast');
+        $('#cd' + id).removeClass('moderate');
+      },
+      error: function(request, textStatus, error) {
+        showError('Oops, there was a problem accepting the comment.');
+      }
+    });
+  }
+
+  function deleteComment(id) {
+    $.ajax({
+      type: 'POST',
+      url: opts.deleteCommentURL,
+      data: {id: id},
+      success: function(data, textStatus, request) {
+        var div = $('#cd' + id);
+        if (data == 'delete') {
+          // Moderator mode: remove the comment and all children immediately
+          div.slideUp('fast', function() {
+            div.remove();
+          });
+          return;
+        }
+        // User mode: only mark the comment as deleted
+        div
+          .find('span.user-id:first')
+          .text('[deleted]').end()
+          .find('div.comment-text:first')
+          .text('[deleted]').end()
+          .find('#cm' + id + ', #dc' + id + ', #ac' + id + ', #rc' + id +
+                ', #sp' + id + ', #hp' + id + ', #cr' + id + ', #rl' + id)
+          .remove();
+        var comment = div.data('comment');
+        comment.username = '[deleted]';
+        comment.text = '[deleted]';
+        div.data('comment', comment);
+      },
+      error: function(request, textStatus, error) {
+        showError('Oops, there was a problem deleting the comment.');
+      }
+    });
+  }
+
+  function showProposal(id) {
+    $('#sp' + id).hide();
+    $('#hp' + id).show();
+    $('#pr' + id).slideDown('fast');
+  }
+
+  function hideProposal(id) {
+    $('#hp' + id).hide();
+    $('#sp' + id).show();
+    $('#pr' + id).slideUp('fast');
+  }
+
+  function showProposeChange(id) {
+    $('#pc' + id).hide();
+    $('#hc' + id).show();
+    var textarea = $('#pt' + id);
+    textarea.val(textarea.data('source'));
+    $.fn.autogrow.resize(textarea[0]);
+    textarea.slideDown('fast');
+  }
+
+  function hideProposeChange(id) {
+    $('#hc' + id).hide();
+    $('#pc' + id).show();
+    var textarea = $('#pt' + id);
+    textarea.val('').removeAttr('disabled');
+    textarea.slideUp('fast');
+  }
+
+  function toggleCommentMarkupBox(id) {
+    $('#mb' + id).toggle();
+  }
+
+  /** Handle when the user clicks on a sort by link. */
+  function handleReSort(link) {
+    var classes = link.attr('class').split(/\s+/);
+    for (var i=0; i<classes.length; i++) {
+      if (classes[i] != 'sort-option') {
+	by = classes[i].substring(2);
+      }
+    }
+    setComparator();
+    // Save/update the sortBy cookie.
+    var expiration = new Date();
+    expiration.setDate(expiration.getDate() + 365);
+    document.cookie= 'sortBy=' + escape(by) +
+                     ';expires=' + expiration.toUTCString();
+    $('ul.comment-ul').each(function(index, ul) {
+      var comments = getChildren($(ul), true);
+      comments = sortComments(comments);
+      appendComments(comments, $(ul).empty());
+    });
+  }
+
+  /**
+   * Function to process a vote when a user clicks an arrow.
+   */
+  function handleVote(link) {
+    if (!opts.voting) {
+      showError("You'll need to login to vote.");
+      return;
+    }
+
+    var id = link.attr('id');
+    if (!id) {
+      // Didn't click on one of the voting arrows.
+      return;
+    }
+    // If it is an unvote, the new vote value is 0,
+    // Otherwise it's 1 for an upvote, or -1 for a downvote.
+    var value = 0;
+    if (id.charAt(1) != 'u') {
+      value = id.charAt(0) == 'u' ? 1 : -1;
+    }
+    // The data to be sent to the server.
+    var d = {
+      comment_id: id.substring(2),
+      value: value
+    };
+
+    // Swap the vote and unvote links.
+    link.hide();
+    $('#' + id.charAt(0) + (id.charAt(1) == 'u' ? 'v' : 'u') + d.comment_id)
+      .show();
+
+    // The div the comment is displayed in.
+    var div = $('div#cd' + d.comment_id);
+    var data = div.data('comment');
+
+    // If this is not an unvote, and the other vote arrow has
+    // already been pressed, unpress it.
+    if ((d.value !== 0) && (data.vote === d.value * -1)) {
+      $('#' + (d.value == 1 ? 'd' : 'u') + 'u' + d.comment_id).hide();
+      $('#' + (d.value == 1 ? 'd' : 'u') + 'v' + d.comment_id).show();
+    }
+
+    // Update the comments rating in the local data.
+    data.rating += (data.vote === 0) ? d.value : (d.value - data.vote);
+    data.vote = d.value;
+    div.data('comment', data);
+
+    // Change the rating text.
+    div.find('.rating:first')
+      .text(data.rating + ' point' + (data.rating == 1 ? '' : 's'));
+
+    // Send the vote information to the server.
+    $.ajax({
+      type: "POST",
+      url: opts.processVoteURL,
+      data: d,
+      error: function(request, textStatus, error) {
+        showError('Oops, there was a problem casting that vote.');
+      }
+    });
+  }
+
+  /**
+   * Open a reply form used to reply to an existing comment.
+   */
+  function openReply(id) {
+    // Swap out the reply link for the hide link
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+    $('#cr' + id).show();
+
+    // Add the reply li to the children ul.
+    var div = $(renderTemplate(replyTemplate, {id: id})).hide();
+    $('#cl' + id)
+      .prepend(div)
+      // Setup the submit handler for the reply form.
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+      .submit(function(event) {
+        event.preventDefault();
+        addComment($('#rf' + id));
+        closeReply(id);
+      })
+      .find('input[type=button]')
+      .click(function() {
+        closeReply(id);
+      });
+    div.slideDown('fast', function() {
+      $('#rf' + id).find('textarea').focus();
+    });
+  }
+
+  /**
+   * Close the reply form opened with openReply.
+   */
+  function closeReply(id) {
+    // Remove the reply div from the DOM.
+    $('#rd' + id).slideUp('fast', function() {
+      $(this).remove();
+    });
+
+    // Swap out the hide link for the reply link
+    $('#cr' + id).hide();
+    $('#rl' + id).show();
+  }
+
+  /**
+   * Recursively sort a tree of comments using the comp comparator.
+   */
+  function sortComments(comments) {
+    comments.sort(comp);
+    $.each(comments, function() {
+      this.children = sortComments(this.children);
+    });
+    return comments;
+  }
+
+  /**
+   * Get the children comments from a ul. If recursive is true,
+   * recursively include childrens' children.
+   */
+  function getChildren(ul, recursive) {
+    var children = [];
+    ul.children().children("[id^='cd']")
+      .each(function() {
+        var comment = $(this).data('comment');
+        if (recursive)
+          comment.children = getChildren($(this).find('#cl' + comment.id), true);
+        children.push(comment);
+      });
+    return children;
+  }
+
+  /** Create a div to display a comment in. */
+  function createCommentDiv(comment) {
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+    function handle(ph, escape) {
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+      });
+      return escape ? esc.text(cur || "").html() : cur;
+    }
+
+    return template.replace(/<([%#])([\w\.]*)\1>/g, function() {
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+    $(document.createElement('div')).attr({'class': 'popup-error'})
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+      .fadeOut("slow");
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+  /** Add a link the user uses to open the comments popup. */
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+      var count = COMMENT_METADATA[id];
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+              event.preventDefault();
+              show($(this).attr('id').substring(2));
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+            }))
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+            })
+        );
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+  };
+
+  var opts = {
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+    commentImage: '/static/_static/comment.png',
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+    downArrow: '/static/_static/down.png',
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+    downArrowPressed: '/static/_static/down-pressed.png',
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+    moderator: false
+  };
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+  if (typeof COMMENT_OPTIONS != "undefined") {
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+  }
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+  var popupTemplate = '\
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+      </p>\
+      <div class="comment-header">Comments</div>\
+      <div class="comment-loading" id="cn<%id%>">\
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+            Propose a change &#9663;\
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+        </p>\
+        <textarea name="proposal" id="pt<%id%>" cols="80"\
+                  spellcheck="false"></textarea>\
+        <input type="submit" value="Add comment" />\
+        <input type="hidden" name="node" value="<%id%>" />\
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+      </form>\
+      </div>\
+    </div>';
+
+  var commentTemplate = '\
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+            <img src="<%upArrow%>" />\
+          </a>\
+          <a href="#" id="uu<%id%>" class="un vote" title="vote up">\
+            <img src="<%upArrowPressed%>" />\
+          </a>\
+        </div>\
+        <div class="arrow">\
+          <a href="#" id="dv<%id%>" class="vote" title="vote down">\
+            <img src="<%downArrow%>" id="da<%id%>" />\
+          </a>\
+          <a href="#" id="du<%id%>" class="un vote" title="vote down">\
+            <img src="<%downArrowPressed%>" />\
+          </a>\
+        </div>\
+      </div>\
+      <div class="comment-content">\
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+          <span class="rating"><%pretty_rating%></span>\
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+          <a href="#" class="reply hidden" id="rl<%id%>">reply &#9657;</a>\
+          <a href="#" class="close-reply" id="cr<%id%>">reply &#9663;</a>\
+          <a href="#" id="sp<%id%>" class="show-proposal">proposal &#9657;</a>\
+          <a href="#" id="hp<%id%>" class="hide-proposal">proposal &#9663;</a>\
+          <a href="#" id="dc<%id%>" class="delete-comment hidden">delete</a>\
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+          </span>\
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+        <pre class="proposal" id="pr<%id%>">\
+<#proposal_diff#>\
+        </pre>\
+          <ul class="comment-children" id="cl<%id%>"></ul>\
+        </div>\
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+    </div>';
+
+  var replyTemplate = '\
+    <li>\
+      <div class="reply-div" id="rd<%id%>">\
+        <form id="rf<%id%>">\
+          <textarea name="comment" cols="80"></textarea>\
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+
+  $(document).ready(function() {
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+$(document).ready(function() {
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+  $('.sphinx-has-comment').comment();
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+  // highlight search words in search results
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+  // directly open comment window if requested
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+  if (anchor.substring(0, 9) == '#comment-') {
+    $('#ao' + anchor.substring(9)).click();
+    document.location.hash = '#s' + anchor.substring(9);
+  }
+});
diff --git a/python/altgraph/doc/_build/html/changelog.html b/python/altgraph/doc/_build/html/changelog.html
new file mode 100644
index 000000000..8f0f459ea
--- /dev/null
+++ b/python/altgraph/doc/_build/html/changelog.html
@@ -0,0 +1,271 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>Release history &mdash; altgraph 0.11 documentation</title>
+    
+    <link rel="stylesheet" href="_static/nature.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript">
+      var DOCUMENTATION_OPTIONS = {
+        URL_ROOT:    './',
+        VERSION:     '0.11',
+        COLLAPSE_INDEX: false,
+        FILE_SUFFIX: '.html',
+        HAS_SOURCE:  true
+      };
+    </script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <link rel="top" title="altgraph 0.11 documentation" href="index.html" />
+    <link rel="next" title="License" href="license.html" />
+    <link rel="prev" title="Altgraph - A basic graph library" href="index.html" /> 
+  </head>
+  <body>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="right" >
+          <a href="py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li class="right" >
+          <a href="license.html" title="License"
+             accesskey="N">next</a> |</li>
+        <li class="right" >
+          <a href="index.html" title="Altgraph - A basic graph library"
+             accesskey="P">previous</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body">
+            
+  <div class="section" id="release-history">
+<h1>Release history<a class="headerlink" href="#release-history" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="id1">
+<h2>0.11<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h2>
+<ul class="simple">
+<li>Stabilize the order of elements in dot file exports,
+patch from bitbucket user &#8216;pombredanne&#8217;.</li>
+<li>Tweak setup.py file to remove dependency on distribute (but
+keep the dependency on setuptools)</li>
+</ul>
+</div>
+<div class="section" id="id2">
+<h2>0.10.2<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h2>
+<ul class="simple">
+<li>There where no classifiers in the package metadata due to a bug
+in setup.py</li>
+</ul>
+</div>
+<div class="section" id="id3">
+<h2>0.10.1<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h2>
+<p>This is a bugfix release</p>
+<p>Bug fixes:</p>
+<ul>
+<li><p class="first">Issue #3: The source archive contains a README.txt
+while the setup file refers to ReadMe.txt.</p>
+<p>This is caused by a misfeature in distutils, as a
+workaround I&#8217;ve renamed ReadMe.txt to README.txt
+in the source tree and setup file.</p>
+</li>
+</ul>
+</div>
+<div class="section" id="id4">
+<h2>0.10<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h2>
+<p>This is a minor feature release</p>
+<p>Features:</p>
+<ul>
+<li><p class="first">Do not use &#8220;2to3&#8221; to support Python 3.</p>
+<p>As a side effect of this altgraph now supports
+Python 2.6 and later, and no longer supports
+earlier releases of Python.</p>
+</li>
+<li><p class="first">The order of attributes in the Dot output
+is now always alphabetical.</p>
+<p>With this change the output will be consistent
+between runs and Python versions.</p>
+</li>
+</ul>
+</div>
+<div class="section" id="id5">
+<h2>0.9<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h2>
+<p>This is a minor bugfix release</p>
+<p>Features:</p>
+<ul class="simple">
+<li>Added <tt class="docutils literal"><span class="pre">altgraph.ObjectGraph.ObjectGraph.nodes</span></tt>, a method
+yielding all nodes in an object graph.</li>
+</ul>
+<p>Bugfixes:</p>
+<ul class="simple">
+<li>The 0.8 release didn&#8217;t work with py2app when using
+python 3.x.</li>
+</ul>
+</div>
+<div class="section" id="id6">
+<h2>0.8<a class="headerlink" href="#id6" title="Permalink to this headline">¶</a></h2>
+<p>This is a minor feature release. The major new feature
+is a extensive set of unittests, which explains almost
+all other changes in this release.</p>
+<p>Bugfixes:</p>
+<ul class="simple">
+<li>Installing failed with Python 2.5 due to using a distutils
+class that isn&#8217;t available in that version of Python
+(issue #1 on the issue tracker)</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.GraphStat.degree_dist</span></tt> now actually works</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.add_edge(a,</span> <span class="pre">b,</span> <span class="pre">create_nodes=False)</span></tt> will
+no longer create the edge when one of the nodes doesn&#8217;t
+exist.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.forw_topo_sort</span></tt> failed for some sparse graphs.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.back_topo_sort</span></tt> was completely broken in
+previous releases.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.forw_bfs_subgraph</span></tt> now actually works.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.back_bfs_subgraph</span></tt> now actually works.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.iterdfs</span></tt> now returns the correct result
+when the <tt class="docutils literal"><span class="pre">forward</span></tt> argument is <tt class="docutils literal"><span class="pre">False</span></tt>.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.iterdata</span></tt> now returns the correct result
+when the <tt class="docutils literal"><span class="pre">forward</span></tt> argument is <tt class="docutils literal"><span class="pre">False</span></tt>.</li>
+</ul>
+<p>Features:</p>
+<ul class="simple">
+<li>The <tt class="docutils literal"><span class="pre">altgraph.Graph</span></tt> constructor now accepts an argument
+that contains 2- and 3-tuples instead of requireing that
+all items have the same size. The (optional) argument can now
+also be any iterator.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Graph.Graph.add_node</span></tt> has no effect when you
+add a hidden node.</li>
+<li>The private method <tt class="docutils literal"><span class="pre">altgraph.Graph._bfs</span></tt> is no longer
+present.</li>
+<li>The private method <tt class="docutils literal"><span class="pre">altgraph.Graph._dfs</span></tt> is no longer
+present.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.ObjectGraph</span></tt> now has a <tt class="docutils literal"><span class="pre">__contains__</span></tt> methods,
+which means you can use the <tt class="docutils literal"><span class="pre">in</span></tt> operator to check if a
+node is part of a graph.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.GraphUtil.generate_random_graph</span></tt> will raise
+<tt class="docutils literal"><span class="pre">GraphError</span></tt> instead of looping forever when it is
+impossible to create the requested graph.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Dot.edge_style</span></tt> raises <tt class="docutils literal"><span class="pre">GraphError</span></tt> when
+one of the nodes is not present in the graph. The method
+silently added the tail in the past, but without ensuring
+a consistent graph state.</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.Dot.save_img</span></tt> now works when the mode is
+<tt class="docutils literal"><span class="pre">&quot;neato&quot;</span></tt>.</li>
+</ul>
+</div>
+<div class="section" id="id7">
+<h2>0.7.2<a class="headerlink" href="#id7" title="Permalink to this headline">¶</a></h2>
+<p>This is a minor bugfix release</p>
+<p>Bugfixes:</p>
+<ul class="simple">
+<li>distutils didn&#8217;t include the documentation subtree</li>
+</ul>
+</div>
+<div class="section" id="id8">
+<h2>0.7.1<a class="headerlink" href="#id8" title="Permalink to this headline">¶</a></h2>
+<p>This is a minor feature release</p>
+<p>Features:</p>
+<ul class="simple">
+<li>Documentation is now generated using <a class="reference external" href="http://pypi.python.org/pypi/sphinx">sphinx</a>
+and can be viewed at &lt;<a class="reference external" href="http://packages.python.org/altgraph">http://packages.python.org/altgraph</a>&gt;.</li>
+<li>The repository has moved to bitbucket</li>
+<li><tt class="docutils literal"><span class="pre">altgraph.GraphStat.avg_hops</span></tt> is no longer present, the function had no
+implementation and no specified behaviour.</li>
+<li>the module <tt class="docutils literal"><span class="pre">altgraph.compat</span></tt> is gone, which means altgraph will no
+longer work with Python 2.3.</li>
+</ul>
+</div>
+<div class="section" id="id9">
+<h2>0.7.0<a class="headerlink" href="#id9" title="Permalink to this headline">¶</a></h2>
+<p>This is a minor feature release.</p>
+<p>Features:</p>
+<ul>
+<li><p class="first">Support for Python 3</p>
+</li>
+<li><p class="first">It is now possible to run tests using &#8216;python setup.py test&#8217;</p>
+<p>(The actual testsuite is still very minimal though)</p>
+</li>
+</ul>
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="index.html">Table Of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#">Release history</a><ul>
+<li><a class="reference internal" href="#id1">0.11</a></li>
+<li><a class="reference internal" href="#id2">0.10.2</a></li>
+<li><a class="reference internal" href="#id3">0.10.1</a></li>
+<li><a class="reference internal" href="#id4">0.10</a></li>
+<li><a class="reference internal" href="#id5">0.9</a></li>
+<li><a class="reference internal" href="#id6">0.8</a></li>
+<li><a class="reference internal" href="#id7">0.7.2</a></li>
+<li><a class="reference internal" href="#id8">0.7.1</a></li>
+<li><a class="reference internal" href="#id9">0.7.0</a></li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="index.html"
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diff --git a/python/altgraph/doc/_build/html/core.html b/python/altgraph/doc/_build/html/core.html
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@@ -0,0 +1,130 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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+  <div class="section" id="module-altgraph">
+<span id="altgraph-a-python-graph-library"></span><h1><a class="reference internal" href="#module-altgraph" title="altgraph: A directional graph for python"><tt class="xref py py-mod docutils literal"><span class="pre">altgraph</span></tt></a> &#8212; A Python Graph Library<a class="headerlink" href="#module-altgraph" title="Permalink to this headline">¶</a></h1>
+<p>altgraph is a fork of <a class="reference external" href="http://pygraphlib.sourceforge.net">graphlib</a> tailored
+to use newer Python 2.3+ features, including additional support used by the
+py2app suite (modulegraph and macholib, specifically).</p>
+<p>altgraph is a python based graph (network) representation and manipulation package.
+It has started out as an extension to the <a class="reference external" href="http://www.ece.arizona.edu/~denny/python_nest/graph_lib_1.0.1.html">graph_lib module</a>
+written by Nathan Denny it has been significantly optimized and expanded.</p>
+<p>The <a class="reference internal" href="graph.html#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">altgraph.Graph.Graph</span></tt></a> class is loosely modeled after the <a class="reference external" href="http://www.algorithmic-solutions.com/enleda.htm">LEDA</a>
+(Library of Efficient Datatypes)  representation. The library
+includes methods for constructing graphs, BFS and DFS traversals,
+topological sort, finding connected components, shortest paths as well as a number
+graph statistics functions. The library can also visualize graphs
+via <a class="reference external" href="http://www.research.att.com/sw/tools/graphviz/">graphviz</a>.</p>
+<dl class="exception">
+<dt id="altgraph.GraphError">
+<em class="property">exception </em><tt class="descclassname">altgraph.</tt><tt class="descname">GraphError</tt><a class="headerlink" href="#altgraph.GraphError" title="Permalink to this definition">¶</a></dt>
+<dd><p>Exception raised when methods are called with bad values of
+an inconsistent state.</p>
+</dd></dl>
+
+</div>
+
+
+          </div>
+        </div>
+      </div>
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+        <div class="sphinxsidebarwrapper">
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+                        title="previous chapter">License</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="graph.html"
+                        title="next chapter"><tt class="docutils literal"><span class="pre">altgraph.Graph</span></tt> &#8212; Basic directional graphs</a></p>
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diff --git a/python/altgraph/doc/_build/html/dot.html b/python/altgraph/doc/_build/html/dot.html
new file mode 100644
index 000000000..87fabc077
--- /dev/null
+++ b/python/altgraph/doc/_build/html/dot.html
@@ -0,0 +1,332 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
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+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>altgraph.Dot — Interface to the dot language &mdash; altgraph 0.11 documentation</title>
+    
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+    <link rel="top" title="altgraph 0.11 documentation" href="index.html" />
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+          <div class="body">
+            
+  <div class="section" id="module-altgraph.Dot">
+<span id="altgraph-dot-interface-to-the-dot-language"></span><h1><a class="reference internal" href="#module-altgraph.Dot" title="altgraph.Dot: Interface to the dot language as used by Graphviz.."><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.Dot</span></tt></a> &#8212; Interface to the dot language<a class="headerlink" href="#module-altgraph.Dot" title="Permalink to this headline">¶</a></h1>
+<p>The <a class="reference internal" href="#module-altgraph.Dot" title="altgraph.Dot: Interface to the dot language as used by Graphviz.."><tt class="xref py py-mod docutils literal"><span class="pre">Dot</span></tt></a> module provides a simple interface to the
+file format used in the <a class="reference external" href="&lt;http://www.research.att.com/sw/tools/graphviz/&gt;`_">graphviz</a> program. The module is intended to
+offload the most tedious part of the process (the <strong>dot</strong> file generation)
+while transparently exposing most of its features.</p>
+<p>To display the graphs or to generate image files the <a class="reference external" href="&lt;http://www.research.att.com/sw/tools/graphviz/&gt;`_">graphviz</a>
+package needs to be installed on the system, moreover the <strong class="command">dot</strong> and <strong class="command">dotty</strong> programs must
+be accesible in the program path so that they can be ran from processes spawned
+within the module.</p>
+<div class="section" id="example-usage">
+<h2>Example usage<a class="headerlink" href="#example-usage" title="Permalink to this headline">¶</a></h2>
+<p>Here is a typical usage:</p>
+<div class="highlight-python"><div class="highlight"><pre><span class="kn">from</span> <span class="nn">altgraph</span> <span class="kn">import</span> <span class="n">Graph</span><span class="p">,</span> <span class="n">Dot</span>
+
+<span class="c"># create a graph</span>
+<span class="n">edges</span> <span class="o">=</span> <span class="p">[</span> <span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">),</span> <span class="p">(</span><span class="mi">1</span><span class="p">,</span><span class="mi">3</span><span class="p">),</span> <span class="p">(</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">),</span> <span class="p">(</span><span class="mi">3</span><span class="p">,</span><span class="mi">5</span><span class="p">),</span> <span class="p">(</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">),</span> <span class="p">(</span><span class="mi">5</span><span class="p">,</span><span class="mi">4</span><span class="p">)</span> <span class="p">]</span>
+<span class="n">graph</span> <span class="o">=</span> <span class="n">Graph</span><span class="o">.</span><span class="n">Graph</span><span class="p">(</span><span class="n">edges</span><span class="p">)</span>
+
+<span class="c"># create a dot representation of the graph</span>
+<span class="n">dot</span> <span class="o">=</span> <span class="n">Dot</span><span class="o">.</span><span class="n">Dot</span><span class="p">(</span><span class="n">graph</span><span class="p">)</span>
+
+<span class="c"># display the graph</span>
+<span class="n">dot</span><span class="o">.</span><span class="n">display</span><span class="p">()</span>
+
+<span class="c"># save the dot representation into the mydot.dot file</span>
+<span class="n">dot</span><span class="o">.</span><span class="n">save_dot</span><span class="p">(</span><span class="n">file_name</span><span class="o">=</span><span class="s">&#39;mydot.dot&#39;</span><span class="p">)</span>
+
+<span class="c"># save dot file as gif image into the graph.gif file</span>
+<span class="n">dot</span><span class="o">.</span><span class="n">save_img</span><span class="p">(</span><span class="n">file_name</span><span class="o">=</span><span class="s">&#39;graph&#39;</span><span class="p">,</span> <span class="n">file_type</span><span class="o">=</span><span class="s">&#39;gif&#39;</span><span class="p">)</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="directed-graph-and-non-directed-graph">
+<h2>Directed graph and non-directed graph<a class="headerlink" href="#directed-graph-and-non-directed-graph" title="Permalink to this headline">¶</a></h2>
+<p>Dot class can use for both directed graph and non-directed graph
+by passing <em>graphtype</em> parameter.</p>
+<p>Example:</p>
+<div class="highlight-python"><div class="highlight"><pre><span class="c"># create directed graph(default)</span>
+<span class="n">dot</span> <span class="o">=</span> <span class="n">Dot</span><span class="o">.</span><span class="n">Dot</span><span class="p">(</span><span class="n">graph</span><span class="p">,</span> <span class="n">graphtype</span><span class="o">=</span><span class="s">&quot;digraph&quot;</span><span class="p">)</span>
+
+<span class="c"># create non-directed graph</span>
+<span class="n">dot</span> <span class="o">=</span> <span class="n">Dot</span><span class="o">.</span><span class="n">Dot</span><span class="p">(</span><span class="n">graph</span><span class="p">,</span> <span class="n">graphtype</span><span class="o">=</span><span class="s">&quot;graph&quot;</span><span class="p">)</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="customizing-the-output">
+<h2>Customizing the output<a class="headerlink" href="#customizing-the-output" title="Permalink to this headline">¶</a></h2>
+<p>The graph drawing process may be customized by passing
+valid <strong class="command">dot</strong> parameters for the nodes and edges. For a list of all
+parameters see the <a class="reference external" href="&lt;http://www.research.att.com/sw/tools/graphviz/&gt;`_">graphviz</a> documentation.</p>
+<p>Example:</p>
+<div class="highlight-python"><div class="highlight"><pre># customizing the way the overall graph is drawn
+dot.style(size=&#39;10,10&#39;, rankdir=&#39;RL&#39;, page=&#39;5, 5&#39; , ranksep=0.75)
+
+# customizing node drawing
+dot.node_style(1, label=&#39;BASE_NODE&#39;,shape=&#39;box&#39;, color=&#39;blue&#39; )
+dot.node_style(2, style=&#39;filled&#39;, fillcolor=&#39;red&#39;)
+
+# customizing edge drawing
+dot.edge_style(1, 2, style=&#39;dotted&#39;)
+dot.edge_style(3, 5, arrowhead=&#39;dot&#39;, label=&#39;binds&#39;, labelangle=&#39;90&#39;)
+dot.edge_style(4, 5, arrowsize=2, style=&#39;bold&#39;)
+
+
+.. note::
+
+   dotty (invoked via :py:func:`~altgraph.Dot.display`) may not be able to
+   display all graphics styles. To verify the output save it to an image
+   file and look at it that way.
+</pre></div>
+</div>
+</div>
+<div class="section" id="valid-attributes">
+<h2>Valid attributes<a class="headerlink" href="#valid-attributes" title="Permalink to this headline">¶</a></h2>
+<ul>
+<li><p class="first">dot styles, passed via the <a class="reference internal" href="#altgraph.Dot.Dot.style" title="altgraph.Dot.Dot.style"><tt class="xref py py-meth docutils literal"><span class="pre">Dot.style()</span></tt></a> method:</p>
+<div class="highlight-python"><div class="highlight"><pre>rankdir = &#39;LR&#39;   (draws the graph horizontally, left to right)
+ranksep = number (rank separation in inches)
+</pre></div>
+</div>
+</li>
+<li><p class="first">node attributes, passed via the <a class="reference internal" href="#altgraph.Dot.Dot.node_style" title="altgraph.Dot.Dot.node_style"><tt class="xref py py-meth docutils literal"><span class="pre">Dot.node_style()</span></tt></a> method:</p>
+<div class="highlight-python"><div class="highlight"><pre><span class="n">style</span> <span class="o">=</span> <span class="s">&#39;filled&#39;</span> <span class="o">|</span> <span class="s">&#39;invisible&#39;</span> <span class="o">|</span> <span class="s">&#39;diagonals&#39;</span> <span class="o">|</span> <span class="s">&#39;rounded&#39;</span>
+<span class="n">shape</span> <span class="o">=</span> <span class="s">&#39;box&#39;</span> <span class="o">|</span> <span class="s">&#39;ellipse&#39;</span> <span class="o">|</span> <span class="s">&#39;circle&#39;</span> <span class="o">|</span> <span class="s">&#39;point&#39;</span> <span class="o">|</span> <span class="s">&#39;triangle&#39;</span>
+</pre></div>
+</div>
+</li>
+<li><p class="first">edge attributes, passed via the <tt class="xref py py-meth docutils literal"><span class="pre">Dot.edge_style()</span></tt> method:</p>
+<div class="highlight-python"><div class="highlight"><pre>style     = &#39;dashed&#39; | &#39;dotted&#39; | &#39;solid&#39; | &#39;invis&#39; | &#39;bold&#39;
+arrowhead = &#39;box&#39; | &#39;crow&#39; | &#39;diamond&#39; | &#39;dot&#39; | &#39;inv&#39; | &#39;none&#39; | &#39;tee&#39; | &#39;vee&#39;
+weight    = number (the larger the number the closer the nodes will be)
+</pre></div>
+</div>
+</li>
+<li><p class="first">valid <a class="reference external" href="http://www.research.att.com/~erg/graphviz/info/colors.html">graphviz colors</a></p>
+</li>
+<li><p class="first">for more details on how to control the graph drawing process see the
+<a class="reference external" href="http://www.research.att.com/sw/tools/graphviz/refs.html">graphviz reference</a>.</p>
+</li>
+</ul>
+</div>
+<div class="section" id="class-interface">
+<h2>Class interface<a class="headerlink" href="#class-interface" title="Permalink to this headline">¶</a></h2>
+<dl class="class">
+<dt id="altgraph.Dot.Dot">
+<em class="property">class </em><tt class="descclassname">altgraph.Dot.</tt><tt class="descname">Dot</tt><big>(</big><em>graph</em><span class="optional">[</span>, <em>nodes</em><span class="optional">[</span>, <em>edgefn</em><span class="optional">[</span>, <em>nodevisitor</em><span class="optional">[</span>, <em>edgevisitor</em><span class="optional">[</span>, <em>name</em><span class="optional">[</span>, <em>dot</em><span class="optional">[</span>, <em>dotty</em><span class="optional">[</span>, <em>neato</em><span class="optional">[</span>, <em>graphtype</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Dot.Dot" title="Permalink to this definition">¶</a></dt>
+<dd><p>Creates a new Dot generator based on the specified
+<a class="reference internal" href="graph.html#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a>.  The Dot generator won&#8217;t reference
+the <em>graph</em> once it is constructed.</p>
+<p>If the <em>nodes</em> argument is present it is the list of nodes to include
+in the graph, otherwise all nodes in <em>graph</em> are included.</p>
+<p>If the <em>edgefn</em> argument is present it is a function that yields the
+nodes connected to another node, this defaults to
+<tt class="xref py py-meth docutils literal"><span class="pre">graph.out_nbr</span></tt>. The constructor won&#8217;t
+add edges to the dot file unless both the head and tail of the edge
+are in <em>nodes</em>.</p>
+<p>If the <em>name</em> is present it specifies the name of the graph in the resulting
+dot file. The default is <tt class="docutils literal"><span class="pre">&quot;G&quot;</span></tt>.</p>
+<p>The functions <em>nodevisitor</em> and <em>edgevisitor</em> return the default style
+for a given edge or node (both default to functions that return an empty
+style).</p>
+<p>The arguments <em>dot</em>, <em>dotty</em> and <em>neato</em> are used to pass the path to
+the corresponding <a class="reference external" href="&lt;http://www.research.att.com/sw/tools/graphviz/&gt;`_">graphviz</a> command.</p>
+</dd></dl>
+
+<div class="section" id="updating-graph-attributes">
+<h3>Updating graph attributes<a class="headerlink" href="#updating-graph-attributes" title="Permalink to this headline">¶</a></h3>
+<dl class="method">
+<dt id="altgraph.Dot.Dot.style">
+<tt class="descclassname">Dot.</tt><tt class="descname">style</tt><big>(</big><em>**attr</em><big>)</big><a class="headerlink" href="#altgraph.Dot.Dot.style" title="Permalink to this definition">¶</a></dt>
+<dd><p>Sets the overall style (graph attributes) to the given attributes.</p>
+<p>See <a class="reference internal" href="#valid-attributes">Valid Attributes</a> for more information about the attributes.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.Dot.node_style">
+<tt class="descclassname">Dot.</tt><tt class="descname">node_style</tt><big>(</big><em>node</em>, <em>**attr</em><big>)</big><a class="headerlink" href="#altgraph.Dot.Dot.node_style" title="Permalink to this definition">¶</a></dt>
+<dd><p>Sets the style for <em>node</em> to the given attributes.</p>
+<p>This method will add <em>node</em> to the graph when it isn&#8217;t already
+present.</p>
+<p>See <a class="reference internal" href="#valid-attributes">Valid Attributes</a> for more information about the attributes.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.Dot.all_node_style">
+<tt class="descclassname">Dot.</tt><tt class="descname">all_node_style</tt><big>(</big><em>**attr</em><big>)</big><a class="headerlink" href="#altgraph.Dot.Dot.all_node_style" title="Permalink to this definition">¶</a></dt>
+<dd><p>Replaces the current style for all nodes</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.edge_style">
+<tt class="descclassname">altgraph.Dot.</tt><tt class="descname">edge_style</tt><big>(</big><em>head</em>, <em>tail</em>, <em>**attr</em><big>)</big><a class="headerlink" href="#altgraph.Dot.edge_style" title="Permalink to this definition">¶</a></dt>
+<dd><p>Sets the style of an edge to the given attributes. The edge will
+be added to the graph when it isn&#8217;t already present, but <em>head</em>
+and <em>tail</em> must both be valid nodes.</p>
+<p>See <a class="reference internal" href="#valid-attributes">Valid Attributes</a> for more information about the attributes.</p>
+</dd></dl>
+
+</div>
+<div class="section" id="emitting-output">
+<h3>Emitting output<a class="headerlink" href="#emitting-output" title="Permalink to this headline">¶</a></h3>
+<dl class="method">
+<dt id="altgraph.Dot.Dot.display">
+<tt class="descclassname">Dot.</tt><tt class="descname">display</tt><big>(</big><span class="optional">[</span><em>mode</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Dot.Dot.display" title="Permalink to this definition">¶</a></dt>
+<dd><p>Displays the current graph via dotty.</p>
+<p>If the <em>mode</em> is <tt class="docutils literal"><span class="pre">&quot;neato&quot;</span></tt> the dot file is processed with
+the neato command before displaying.</p>
+<p>This method won&#8217;t return until the dotty command exits.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.save_dot">
+<tt class="descclassname">altgraph.Dot.</tt><tt class="descname">save_dot</tt><big>(</big><em>filename</em><big>)</big><a class="headerlink" href="#altgraph.Dot.save_dot" title="Permalink to this definition">¶</a></dt>
+<dd><p>Saves the current graph representation into the given file.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p>For backward compatibility reasons this method can also
+be called without an argument, it will then write the graph
+into a fixed filename (present in the attribute <tt class="xref py py-data docutils literal"><span class="pre">Graph.temp_dot</span></tt>).</p>
+<p class="last">This feature is deprecated and should not be used.</p>
+</div>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.save_image">
+<tt class="descclassname">altgraph.Dot.</tt><tt class="descname">save_image</tt><big>(</big><em>file_name</em><span class="optional">[</span>, <em>file_type</em><span class="optional">[</span>, <em>mode</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Dot.save_image" title="Permalink to this definition">¶</a></dt>
+<dd><p>Saves the current graph representation as an image file. The output
+is written into a file whose basename is <em>file_name</em> and whose suffix
+is <em>file_type</em>.</p>
+<p>The <em>file_type</em> specifies the type of file to write, the default
+is <tt class="docutils literal"><span class="pre">&quot;gif&quot;</span></tt>.</p>
+<p>If the <em>mode</em> is <tt class="docutils literal"><span class="pre">&quot;neato&quot;</span></tt> the dot file is processed with
+the neato command before displaying.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p>For backward compatibility reasons this method can also
+be called without an argument, it will then write the graph
+with a fixed basename (<tt class="docutils literal"><span class="pre">&quot;out&quot;</span></tt>).</p>
+<p class="last">This feature is deprecated and should not be used.</p>
+</div>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.iterdot">
+<tt class="descclassname">altgraph.Dot.</tt><tt class="descname">iterdot</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Dot.iterdot" title="Permalink to this definition">¶</a></dt>
+<dd><p>Yields all lines of a <a class="reference external" href="&lt;http://www.research.att.com/sw/tools/graphviz/&gt;`_">graphviz</a> input file (including line endings).</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Dot.__iter__">
+<tt class="descclassname">altgraph.Dot.</tt><tt class="descname">__iter__</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Dot.__iter__" title="Permalink to this definition">¶</a></dt>
+<dd><p>Alias for the <a class="reference internal" href="#altgraph.Dot.iterdot" title="altgraph.Dot.iterdot"><tt class="xref py py-meth docutils literal"><span class="pre">iterdot()</span></tt></a> method.</p>
+</dd></dl>
+
+</div>
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="index.html">Table Of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#"><tt class="docutils literal"><span class="pre">altgraph.Dot</span></tt> &#8212; Interface to the dot language</a><ul>
+<li><a class="reference internal" href="#example-usage">Example usage</a></li>
+<li><a class="reference internal" href="#directed-graph-and-non-directed-graph">Directed graph and non-directed graph</a></li>
+<li><a class="reference internal" href="#customizing-the-output">Customizing the output</a></li>
+<li><a class="reference internal" href="#valid-attributes">Valid attributes</a></li>
+<li><a class="reference internal" href="#class-interface">Class interface</a><ul>
+<li><a class="reference internal" href="#updating-graph-attributes">Updating graph attributes</a></li>
+<li><a class="reference internal" href="#emitting-output">Emitting output</a></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="graphutil.html"
+                        title="previous chapter"><tt class="docutils literal"><span class="pre">altgraph.GraphUtil</span></tt> &#8212; Utility functions</a></p>
+<div id="searchbox" style="display: none">
+  <h3>Quick search</h3>
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
+      <input type="submit" value="Go" />
+      <input type="hidden" name="check_keywords" value="yes" />
+      <input type="hidden" name="area" value="default" />
+    </form>
+    <p class="searchtip" style="font-size: 90%">
+    Enter search terms or a module, class or function name.
+    </p>
+</div>
+<script type="text/javascript">$('#searchbox').show(0);</script>
+        </div>
+      </div>
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+    </div>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             >index</a></li>
+        <li class="right" >
+          <a href="py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li class="right" >
+          <a href="graphutil.html" title="altgraph.GraphUtil — Utility functions"
+             >previous</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>
+    <div class="footer">
+        &copy; Copyright 2010-2011, Ronald Oussoren, Bob Ippolito, 2004 Istvan Albert.
+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.2.1.
+    </div>
+  </body>
+</html>
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diff --git a/python/altgraph/doc/_build/html/genindex.html b/python/altgraph/doc/_build/html/genindex.html
new file mode 100644
index 000000000..16977c712
--- /dev/null
+++ b/python/altgraph/doc/_build/html/genindex.html
@@ -0,0 +1,604 @@
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>Index &mdash; altgraph 0.11 documentation</title>
+    
+    <link rel="stylesheet" href="_static/nature.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript">
+      var DOCUMENTATION_OPTIONS = {
+        URL_ROOT:    './',
+        VERSION:     '0.11',
+        COLLAPSE_INDEX: false,
+        FILE_SUFFIX: '.html',
+        HAS_SOURCE:  true
+      };
+    </script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <link rel="top" title="altgraph 0.11 documentation" href="index.html" /> 
+  </head>
+  <body>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="#" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="right" >
+          <a href="py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body">
+            
+
+<h1 id="index">Index</h1>
+
+<div class="genindex-jumpbox">
+ <a href="#_"><strong>_</strong></a>
+ | <a href="#A"><strong>A</strong></a>
+ | <a href="#B"><strong>B</strong></a>
+ | <a href="#C"><strong>C</strong></a>
+ | <a href="#D"><strong>D</strong></a>
+ | <a href="#E"><strong>E</strong></a>
+ | <a href="#F"><strong>F</strong></a>
+ | <a href="#G"><strong>G</strong></a>
+ | <a href="#H"><strong>H</strong></a>
+ | <a href="#I"><strong>I</strong></a>
+ | <a href="#M"><strong>M</strong></a>
+ | <a href="#N"><strong>N</strong></a>
+ | <a href="#O"><strong>O</strong></a>
+ | <a href="#R"><strong>R</strong></a>
+ | <a href="#S"><strong>S</strong></a>
+ | <a href="#T"><strong>T</strong></a>
+ 
+</div>
+<h2 id="_">_</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.__contains__">__contains__() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      <dd><dl>
+        
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.__contains__">(altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      </dl></dd>
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.__iter__">__iter__() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      <dd><dl>
+        
+  <dt><a href="dot.html#altgraph.Dot.__iter__">(in module altgraph.Dot)</a>
+  </dt>
+
+      </dl></dd>
+  </dl></td>
+</tr></table>
+
+<h2 id="A">A</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.add_edge">add_edge() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.add_node">add_node() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.addNode">addNode() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.all_degree">all_degree() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.all_edges">all_edges() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.all_nbrs">all_nbrs() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.Dot.all_node_style">all_node_style() (altgraph.Dot.Dot method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="core.html#module-altgraph">altgraph (module)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#module-altgraph.Dot">altgraph.Dot (module)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#module-altgraph.Graph">altgraph.Graph (module)</a>
+  </dt>
+
+      
+  <dt><a href="graphalgo.html#module-altgraph.GraphAlgo">altgraph.GraphAlgo (module)</a>
+  </dt>
+
+      
+  <dt><a href="graphstat.html#module-altgraph.GraphStat">altgraph.GraphStat (module)</a>
+  </dt>
+
+      
+  <dt><a href="graphutil.html#module-altgraph.GraphUtil">altgraph.GraphUtil (module)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#module-altgraph.ObjectGraph">altgraph.ObjectGraph (module)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="B">B</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.back_bfs">back_bfs() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.back_bfs_subgraph">back_bfs_subgraph() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.back_topo_sort">back_topo_sort() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="C">C</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.clust_coef">clust_coef() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.connected">connected() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.createNode">createNode() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.createReferences">createReferences() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="D">D</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graphstat.html#altgraph.GraphStat.degree_dist">degree_dist() (in module altgraph.GraphStat)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.describe_edge">describe_edge() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.describe_node">describe_node() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graphalgo.html#altgraph.GraphAlgo.dijkstra">dijkstra() (in module altgraph.GraphAlgo)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.Dot.display">display() (altgraph.Dot.Dot method)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.Dot">Dot (class in altgraph.Dot)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="E">E</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.edge_by_id">edge_by_id() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.edge_by_node">edge_by_node() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.edge_data">edge_data() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.edge_list">edge_list() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.edge_style">edge_style() (in module altgraph.Dot)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="F">F</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graphutil.html#altgraph.GraphUtil.filter_stack">filter_stack() (in module altgraph.GraphUtil)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.filterStack">filterStack() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.findNode">findNode() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.flatten">flatten() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.forw_bfs">forw_bfs() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.forw_bfs_subgraph">forw_bfs_subgraph() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.forw_topo_sort">forw_topo_sort() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="G">G</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graphutil.html#altgraph.GraphUtil.generate_random_graph">generate_random_graph() (in module altgraph.GraphUtil)</a>
+  </dt>
+
+      
+  <dt><a href="graphutil.html#altgraph.GraphUtil.generate_scale_free_graph">generate_scale_free_graph() (in module altgraph.GraphUtil)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.get_edges">get_edges() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.get_hops">get_hops() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.getIdent">getIdent() (in module altgraph.ObjectGraph)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.getRawIdent">getRawIdent() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph">Graph (class in altgraph.Graph)</a>
+  </dt>
+
+      
+  <dt><a href="core.html#altgraph.GraphError">GraphError</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="H">H</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.head">head() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.hidden_edge_list">hidden_edge_list() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.hidden_node_list">hidden_node_list() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.hide_edge">hide_edge() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.hide_node">hide_node() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="I">I</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.inc_degree">inc_degree() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.inc_edges">inc_edges() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.inc_nbrs">inc_nbrs() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.iterdata">iterdata() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.iterdfs">iterdfs() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.iterdot">iterdot() (in module altgraph.Dot)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="M">M</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.msg">msg() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.msgin">msgin() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.msgout">msgout() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="N">N</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.node_data">node_data() (in module altgraph.Graph)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.node_list">node_list() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.Dot.node_style">node_style() (altgraph.Dot.Dot method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.nodes">nodes() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.number_of_edges">number_of_edges() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.number_of_hidden_edges">number_of_hidden_edges() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.number_of_hidden_nodes">number_of_hidden_nodes() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.number_of_nodes">number_of_nodes() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="O">O</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph">ObjectGraph (class in altgraph.ObjectGraph)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.debug">ObjectGraph.debug (in module altgraph.ObjectGraph)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.graph">ObjectGraph.graph (in module altgraph.ObjectGraph)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.out_degree">out_degree() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.out_edges">out_edges() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.out_nbrs">out_nbrs() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="R">R</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.ObjectGraph.removeNode">removeNode() (altgraph.ObjectGraph.ObjectGraph method)</a>
+  </dt>
+
+      
+  <dt><a href="objectgraph.html#altgraph.ObjectGraph.removeReference">removeReference() (in module altgraph.ObjectGraph)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.restore_all_edges">restore_all_edges() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.restore_all_nodes">restore_all_nodes() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.restore_edge">restore_edge() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.restore_node">restore_node() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="S">S</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="dot.html#altgraph.Dot.save_dot">save_dot() (in module altgraph.Dot)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.save_image">save_image() (in module altgraph.Dot)</a>
+  </dt>
+
+  </dl></td>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graphalgo.html#altgraph.GraphAlgo.shortest_path">shortest_path() (in module altgraph.GraphAlgo)</a>
+  </dt>
+
+      
+  <dt><a href="dot.html#altgraph.Dot.Dot.style">style() (altgraph.Dot.Dot method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+<h2 id="T">T</h2>
+<table style="width: 100%" class="indextable genindextable"><tr>
+  <td style="width: 33%" valign="top"><dl>
+      
+  <dt><a href="graph.html#altgraph.Graph.Graph.tail">tail() (altgraph.Graph.Graph method)</a>
+  </dt>
+
+  </dl></td>
+</tr></table>
+
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+
+   
+
+<div id="searchbox" style="display: none">
+  <h3>Quick search</h3>
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
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+    Enter search terms or a module, class or function name.
+    </p>
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+            
+  <div class="section" id="module-altgraph.Graph">
+<span id="altgraph-graph-basic-directional-graphs"></span><h1><a class="reference internal" href="#module-altgraph.Graph" title="altgraph.Graph: Basic directional graphs."><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.Graph</span></tt></a> &#8212; Basic directional graphs<a class="headerlink" href="#module-altgraph.Graph" title="Permalink to this headline">¶</a></h1>
+<p>The module <a class="reference internal" href="#module-altgraph.Graph" title="altgraph.Graph: Basic directional graphs."><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.Graph</span></tt></a> provides a class <a class="reference internal" href="#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a> that
+represents a directed graph with <em>N</em> nodes and <em>E</em> edges.</p>
+<dl class="class">
+<dt id="altgraph.Graph.Graph">
+<em class="property">class </em><tt class="descclassname">altgraph.Graph.</tt><tt class="descname">Graph</tt><big>(</big><span class="optional">[</span><em>edges</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph" title="Permalink to this definition">¶</a></dt>
+<dd><p>Constructs a new empty <a class="reference internal" href="#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a> object. If the optional
+<em>edges</em> parameter is supplied, updates the graph by adding the
+specified edges.</p>
+<p>All of the elements in <em>edges</em> should be tuples with two or three
+elements. The first two elements of the tuple are the source and
+destination node of the edge, the optional third element is the
+edge data.  The source and destination nodes are added to the graph
+when the aren&#8217;t already present.</p>
+</dd></dl>
+
+<div class="section" id="node-related-methods">
+<h2>Node related methods<a class="headerlink" href="#node-related-methods" title="Permalink to this headline">¶</a></h2>
+<dl class="method">
+<dt id="altgraph.Graph.Graph.add_node">
+<tt class="descclassname">Graph.</tt><tt class="descname">add_node</tt><big>(</big><em>node</em><span class="optional">[</span>, <em>node_data</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.add_node" title="Permalink to this definition">¶</a></dt>
+<dd><p>Adds a new node to the graph if it is not already present. The new
+node must be a hashable object.</p>
+<p>Arbitrary data can be attached to the node via the optional <em>node_data</em>
+argument.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">the node also won&#8217;t be added to the graph when it is
+present but currently hidden.</p>
+</div>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.hide_node">
+<tt class="descclassname">Graph.</tt><tt class="descname">hide_node</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.hide_node" title="Permalink to this definition">¶</a></dt>
+<dd><p>Hides a <em>node</em> from the graph. The incoming and outgoing edges of
+the node will also be hidden.</p>
+<p>Raises <a class="reference internal" href="core.html#altgraph.GraphError" title="altgraph.GraphError"><tt class="xref py py-class docutils literal"><span class="pre">altgraph.GraphError</span></tt></a> when the node is not (visible)
+node of the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.restore_node">
+<tt class="descclassname">Graph.</tt><tt class="descname">restore_node</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.restore_node" title="Permalink to this definition">¶</a></dt>
+<dd><p>Restores a previously hidden <em>node</em>. The incoming and outgoing
+edges of the node are also restored.</p>
+<p>Raises <a class="reference internal" href="core.html#altgraph.GraphError" title="altgraph.GraphError"><tt class="xref py py-class docutils literal"><span class="pre">altgraph.GraphError</span></tt></a> when the node is not a hidden
+node of the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.restore_all_nodes">
+<tt class="descclassname">Graph.</tt><tt class="descname">restore_all_nodes</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.restore_all_nodes" title="Permalink to this definition">¶</a></dt>
+<dd><p>Restores all hidden nodes.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.number_of_nodes">
+<tt class="descclassname">Graph.</tt><tt class="descname">number_of_nodes</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.number_of_nodes" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of visible nodes in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.number_of_hidden_nodes">
+<tt class="descclassname">Graph.</tt><tt class="descname">number_of_hidden_nodes</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.number_of_hidden_nodes" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of hidden nodes in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.node_list">
+<tt class="descclassname">Graph.</tt><tt class="descname">node_list</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.node_list" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a list with all visible nodes in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.hidden_node_list">
+<tt class="descclassname">Graph.</tt><tt class="descname">hidden_node_list</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.hidden_node_list" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a list with all hidden nodes in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.node_data">
+<tt class="descclassname">altgraph.Graph.</tt><tt class="descname">node_data</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.node_data" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the data associated with the <em>node</em> when it was
+added.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.describe_node">
+<tt class="descclassname">Graph.</tt><tt class="descname">describe_node</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.describe_node" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns <em>node</em>, the node&#8217;s data and the lists of outgoing
+and incoming edges for the node.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">the edge lists should not be modified, doing so
+can result in unpredicatable behavior.</p>
+</div>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.__contains__">
+<tt class="descclassname">Graph.</tt><tt class="descname">__contains__</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.__contains__" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns True iff <em>node</em> is a node in the graph. This
+method is accessed through the <em>in</em> operator.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.__iter__">
+<tt class="descclassname">Graph.</tt><tt class="descname">__iter__</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.__iter__" title="Permalink to this definition">¶</a></dt>
+<dd><p>Yield all nodes in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.out_edges">
+<tt class="descclassname">Graph.</tt><tt class="descname">out_edges</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.out_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the list of outgoing edges for <em>node</em></p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.inc_edges">
+<tt class="descclassname">Graph.</tt><tt class="descname">inc_edges</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.inc_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the list of incoming edges for <em>node</em></p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.all_edges">
+<tt class="descclassname">Graph.</tt><tt class="descname">all_edges</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.all_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the list of incoming and outgoing edges for <em>node</em></p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.out_degree">
+<tt class="descclassname">Graph.</tt><tt class="descname">out_degree</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.out_degree" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of outgoing edges for <em>node</em>.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.inc_degree">
+<tt class="descclassname">Graph.</tt><tt class="descname">inc_degree</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.inc_degree" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of incoming edges for <em>node</em>.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.all_degree">
+<tt class="descclassname">Graph.</tt><tt class="descname">all_degree</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.all_degree" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of edges (incoming or outgoing) for <em>node</em>.</p>
+</dd></dl>
+
+</div>
+<div class="section" id="edge-related-methods">
+<h2>Edge related methods<a class="headerlink" href="#edge-related-methods" title="Permalink to this headline">¶</a></h2>
+<dl class="method">
+<dt id="altgraph.Graph.Graph.add_edge">
+<tt class="descclassname">Graph.</tt><tt class="descname">add_edge</tt><big>(</big><em>head_id</em>, <em>tail_id</em><span class="optional">[</span>, <em>edge data</em><span class="optional">[</span>, <em>create_nodes</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.add_edge" title="Permalink to this definition">¶</a></dt>
+<dd><p>Adds a directed edge from <em>head_id</em> to <em>tail_id</em>. Arbitrary data can
+be added via <em>edge_data</em>.  When <em>create_nodes</em> is <em>True</em> (the default),
+<em>head_id</em> and <em>tail_id</em> will be added to the graph when the aren&#8217;t
+already present.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.hide_edge">
+<tt class="descclassname">Graph.</tt><tt class="descname">hide_edge</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.hide_edge" title="Permalink to this definition">¶</a></dt>
+<dd><p>Hides an edge from the graph. The edge may be unhidden at some later
+time.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.restore_edge">
+<tt class="descclassname">Graph.</tt><tt class="descname">restore_edge</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.restore_edge" title="Permalink to this definition">¶</a></dt>
+<dd><p>Restores a previously hidden <em>edge</em>.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.restore_all_edges">
+<tt class="descclassname">Graph.</tt><tt class="descname">restore_all_edges</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.restore_all_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Restore all edges that were hidden before, except for edges
+referring to hidden nodes.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.edge_by_node">
+<tt class="descclassname">Graph.</tt><tt class="descname">edge_by_node</tt><big>(</big><em>head</em>, <em>tail</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.edge_by_node" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the edge ID for an edge from <em>head</em> to <em>tail</em>,
+or <a class="reference external" href="http://docs.python.org/library/constants.html#None" title="(in Python v2.7)"><tt class="xref py py-data docutils literal"><span class="pre">None</span></tt></a> when no such edge exists.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.edge_by_id">
+<tt class="descclassname">Graph.</tt><tt class="descname">edge_by_id</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.edge_by_id" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the head and tail of the <em>edge</em></p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.edge_data">
+<tt class="descclassname">Graph.</tt><tt class="descname">edge_data</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.edge_data" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the data associated with the <em>edge</em>.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.head">
+<tt class="descclassname">Graph.</tt><tt class="descname">head</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.head" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the head of an <em>edge</em></p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.tail">
+<tt class="descclassname">Graph.</tt><tt class="descname">tail</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.tail" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the tail of an <em>edge</em></p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.describe_edge">
+<tt class="descclassname">Graph.</tt><tt class="descname">describe_edge</tt><big>(</big><em>edge</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.describe_edge" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the <em>edge</em>, the associated data, its head and tail.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.number_of_edges">
+<tt class="descclassname">Graph.</tt><tt class="descname">number_of_edges</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.number_of_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of visible edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.number_of_hidden_edges">
+<tt class="descclassname">Graph.</tt><tt class="descname">number_of_hidden_edges</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.number_of_hidden_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return the number of hidden edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.edge_list">
+<tt class="descclassname">Graph.</tt><tt class="descname">edge_list</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.edge_list" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a list with all visible edges in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.hidden_edge_list">
+<tt class="descclassname">Graph.</tt><tt class="descname">hidden_edge_list</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.hidden_edge_list" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a list with all hidden edges in the graph.</p>
+</dd></dl>
+
+</div>
+<div class="section" id="graph-traversal">
+<h2>Graph traversal<a class="headerlink" href="#graph-traversal" title="Permalink to this headline">¶</a></h2>
+<dl class="method">
+<dt id="altgraph.Graph.Graph.out_nbrs">
+<tt class="descclassname">Graph.</tt><tt class="descname">out_nbrs</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.out_nbrs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a list of all nodes connected by outgoing edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.inc_nbrs">
+<tt class="descclassname">Graph.</tt><tt class="descname">inc_nbrs</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.inc_nbrs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a list of all nodes connected by incoming edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.all_nbrs">
+<tt class="descclassname">Graph.</tt><tt class="descname">all_nbrs</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.all_nbrs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a list of nodes connected by an incoming or outgoing edge.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.forw_topo_sort">
+<tt class="descclassname">Graph.</tt><tt class="descname">forw_topo_sort</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.forw_topo_sort" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a list of nodes where the successors (based on outgoing
+edges) of any given node apear in the sequence after that node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.back_topo_sort">
+<tt class="descclassname">Graph.</tt><tt class="descname">back_topo_sort</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.back_topo_sort" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a list of nodes where the successors (based on incoming
+edges) of any given node apear in the sequence after that node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.forw_bfs_subgraph">
+<tt class="descclassname">Graph.</tt><tt class="descname">forw_bfs_subgraph</tt><big>(</big><em>start_id</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.forw_bfs_subgraph" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a subgraph consisting of the breadth first
+reachable nodes from <em>start_id</em> based on their outgoing edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.back_bfs_subgraph">
+<tt class="descclassname">Graph.</tt><tt class="descname">back_bfs_subgraph</tt><big>(</big><em>start_id</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.back_bfs_subgraph" title="Permalink to this definition">¶</a></dt>
+<dd><p>Return a subgraph consisting of the breadth first
+reachable nodes from <em>start_id</em> based on their incoming edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.iterdfs">
+<tt class="descclassname">Graph.</tt><tt class="descname">iterdfs</tt><big>(</big><em>start</em><span class="optional">[</span>, <em>end</em><span class="optional">[</span>, <em>forward</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.iterdfs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Yield nodes in a depth first traversal starting at the <em>start</em>
+node.</p>
+<p>If <em>end</em> is specified traversal stops when reaching that node.</p>
+<p>If forward is True (the default) edges are traversed in forward
+direction, otherwise they are traversed in reverse direction.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.iterdata">
+<tt class="descclassname">Graph.</tt><tt class="descname">iterdata</tt><big>(</big><em>start</em><span class="optional">[</span>, <em>end</em><span class="optional">[</span>, <em>forward</em><span class="optional">[</span>, <em>condition</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.iterdata" title="Permalink to this definition">¶</a></dt>
+<dd><p>Yield the associated data for nodes in a depth first traversal
+starting at the <em>start</em> node. This method will not yield values for nodes
+without associated data.</p>
+<p>If <em>end</em> is specified traversal stops when reaching that node.</p>
+<p>If <em>condition</em> is specified and the condition callable returns
+False for the associated data this method will not yield the
+associated data and will not follow the edges for the node.</p>
+<p>If forward is True (the default) edges are traversed in forward
+direction, otherwise they are traversed in reverse direction.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.forw_bfs">
+<tt class="descclassname">Graph.</tt><tt class="descname">forw_bfs</tt><big>(</big><em>start</em><span class="optional">[</span>, <em>end</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.forw_bfs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a list of nodes starting at <em>start</em> in some bread first
+search order (following outgoing edges).</p>
+<p>When <em>end</em> is specified iteration stops at that node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.back_bfs">
+<tt class="descclassname">Graph.</tt><tt class="descname">back_bfs</tt><big>(</big><em>start</em><span class="optional">[</span>, <em>end</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.back_bfs" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a list of nodes starting at <em>start</em> in some bread first
+search order (following incoming edges).</p>
+<p>When <em>end</em> is specified iteration stops at that node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.get_hops">
+<tt class="descclassname">Graph.</tt><tt class="descname">get_hops</tt><big>(</big><em>start</em><span class="optional">[</span>, <em>end</em><span class="optional">[</span>, <em>forward</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.get_hops" title="Permalink to this definition">¶</a></dt>
+<dd><p>Computes the hop distance to all nodes centered around a specified node.</p>
+<p>First order neighbours are at hop 1, their neigbours are at hop 2 etc.
+Uses <a class="reference internal" href="#altgraph.Graph.Graph.forw_bfs" title="altgraph.Graph.Graph.forw_bfs"><tt class="xref py py-meth docutils literal"><span class="pre">forw_bfs()</span></tt></a> or <a class="reference internal" href="#altgraph.Graph.Graph.back_bfs" title="altgraph.Graph.Graph.back_bfs"><tt class="xref py py-meth docutils literal"><span class="pre">back_bfs()</span></tt></a> depending on the value of
+the forward parameter.</p>
+<p>If the distance between all neighbouring nodes is 1 the hop number
+corresponds to the shortest distance between the nodes.</p>
+<p>Typical usage:</p>
+<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="k">print</span> <span class="n">graph</span><span class="o">.</span><span class="n">get_hops</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">8</span><span class="p">)</span>
+<span class="gp">&gt;&gt;&gt; </span><span class="p">[(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">0</span><span class="p">),</span> <span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">1</span><span class="p">),</span> <span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mi">2</span><span class="p">),</span> <span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">3</span><span class="p">),</span> <span class="p">(</span><span class="mi">7</span><span class="p">,</span> <span class="mi">4</span><span class="p">),</span> <span class="p">(</span><span class="mi">8</span><span class="p">,</span> <span class="mi">5</span><span class="p">)]</span>
+<span class="go"># node 1 is at 0 hops</span>
+<span class="go"># node 2 is at 1 hop</span>
+<span class="go"># ...</span>
+<span class="go"># node 8 is at 5 hops</span>
+</pre></div>
+</div>
+</dd></dl>
+
+</div>
+<div class="section" id="graph-statistics">
+<h2>Graph statistics<a class="headerlink" href="#graph-statistics" title="Permalink to this headline">¶</a></h2>
+<dl class="method">
+<dt id="altgraph.Graph.Graph.connected">
+<tt class="descclassname">Graph.</tt><tt class="descname">connected</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.connected" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns True iff every node in the graph can be reached from
+every other node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.Graph.Graph.clust_coef">
+<tt class="descclassname">Graph.</tt><tt class="descname">clust_coef</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.Graph.Graph.clust_coef" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the local clustering coefficient of node.</p>
+<p>The local cluster coefficient is the proportion of the actual number
+of edges between neighbours of node and the maximum number of
+edges between those nodes.</p>
+</dd></dl>
+
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="index.html">Table Of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#"><tt class="docutils literal"><span class="pre">altgraph.Graph</span></tt> &#8212; Basic directional graphs</a><ul>
+<li><a class="reference internal" href="#node-related-methods">Node related methods</a></li>
+<li><a class="reference internal" href="#edge-related-methods">Edge related methods</a></li>
+<li><a class="reference internal" href="#graph-traversal">Graph traversal</a></li>
+<li><a class="reference internal" href="#graph-statistics">Graph statistics</a></li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="core.html"
+                        title="previous chapter"><tt class="docutils literal"><span class="pre">altgraph</span></tt> &#8212; A Python Graph Library</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="objectgraph.html"
+                        title="next chapter"><tt class="docutils literal"><span class="pre">altgraph.ObjectGraph</span></tt> &#8212; Graphs of objecs with an identifier</a></p>
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+            
+  <div class="section" id="module-altgraph.GraphAlgo">
+<span id="altgraph-graphalgo-graph-algorithms"></span><h1><a class="reference internal" href="#module-altgraph.GraphAlgo" title="altgraph.GraphAlgo: Basic graphs algoritms"><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.GraphAlgo</span></tt></a> &#8212; Graph algorithms<a class="headerlink" href="#module-altgraph.GraphAlgo" title="Permalink to this headline">¶</a></h1>
+<dl class="function">
+<dt id="altgraph.GraphAlgo.dijkstra">
+<tt class="descclassname">altgraph.GraphAlgo.</tt><tt class="descname">dijkstra</tt><big>(</big><em>graph</em>, <em>start</em><span class="optional">[</span>, <em>end</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.GraphAlgo.dijkstra" title="Permalink to this definition">¶</a></dt>
+<dd><p>Dijkstra&#8217;s algorithm for shortest paths.</p>
+<p>Find shortest paths from the  start node to all nodes nearer
+than or equal to the <em>end</em> node. The edge data is assumed to be the edge length.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">Dijkstra&#8217;s algorithm is only guaranteed to work correctly when all edge lengths are positive.
+This code does not verify this property for all edges (only the edges examined until the end
+vertex is reached), but will correctly compute shortest paths even for some graphs with negative
+edges, and will raise an exception if it discovers that a negative edge has caused it to make a mistake.</p>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="altgraph.GraphAlgo.shortest_path">
+<tt class="descclassname">altgraph.GraphAlgo.</tt><tt class="descname">shortest_path</tt><big>(</big><em>graph</em>, <em>start</em>, <em>end</em><big>)</big><a class="headerlink" href="#altgraph.GraphAlgo.shortest_path" title="Permalink to this definition">¶</a></dt>
+<dd><p>Find a single shortest path from the given start node to the given end node.
+The input has the same conventions as <a class="reference internal" href="#altgraph.GraphAlgo.dijkstra" title="altgraph.GraphAlgo.dijkstra"><tt class="xref py py-func docutils literal"><span class="pre">dijkstra()</span></tt></a>. The output is a list
+of the nodes in order along the shortest path.</p>
+</dd></dl>
+
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="objectgraph.html"
+                        title="previous chapter"><tt class="docutils literal"><span class="pre">altgraph.ObjectGraph</span></tt> &#8212; Graphs of objecs with an identifier</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="graphstat.html"
+                        title="next chapter"><tt class="docutils literal"><span class="pre">altgraph.GraphStat</span></tt> &#8212; Functions providing various graph statistics</a></p>
+<div id="searchbox" style="display: none">
+  <h3>Quick search</h3>
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
+      <input type="submit" value="Go" />
+      <input type="hidden" name="check_keywords" value="yes" />
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+    </form>
+    <p class="searchtip" style="font-size: 90%">
+    Enter search terms or a module, class or function name.
+    </p>
+</div>
+<script type="text/javascript">$('#searchbox').show(0);</script>
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+        <li class="right" >
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+             >previous</a> |</li>
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+      </ul>
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+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.2.1.
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+  </body>
+</html>
\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/graphstat.html b/python/altgraph/doc/_build/html/graphstat.html
new file mode 100644
index 000000000..49a89bf51
--- /dev/null
+++ b/python/altgraph/doc/_build/html/graphstat.html
@@ -0,0 +1,130 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>altgraph.GraphStat — Functions providing various graph statistics &mdash; altgraph 0.11 documentation</title>
+    
+    <link rel="stylesheet" href="_static/nature.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript">
+      var DOCUMENTATION_OPTIONS = {
+        URL_ROOT:    './',
+        VERSION:     '0.11',
+        COLLAPSE_INDEX: false,
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+        HAS_SOURCE:  true
+      };
+    </script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <link rel="top" title="altgraph 0.11 documentation" href="index.html" />
+    <link rel="next" title="altgraph.GraphUtil — Utility functions" href="graphutil.html" />
+    <link rel="prev" title="altgraph.GraphAlgo — Graph algorithms" href="graphalgo.html" /> 
+  </head>
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+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="right" >
+          <a href="py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li class="right" >
+          <a href="graphutil.html" title="altgraph.GraphUtil — Utility functions"
+             accesskey="N">next</a> |</li>
+        <li class="right" >
+          <a href="graphalgo.html" title="altgraph.GraphAlgo — Graph algorithms"
+             accesskey="P">previous</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body">
+            
+  <div class="section" id="module-altgraph.GraphStat">
+<span id="altgraph-graphstat-functions-providing-various-graph-statistics"></span><h1><a class="reference internal" href="#module-altgraph.GraphStat" title="altgraph.GraphStat: Functions providing various graph statistics"><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.GraphStat</span></tt></a> &#8212; Functions providing various graph statistics<a class="headerlink" href="#module-altgraph.GraphStat" title="Permalink to this headline">¶</a></h1>
+<p>The module <a class="reference internal" href="#module-altgraph.GraphStat" title="altgraph.GraphStat: Functions providing various graph statistics"><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.GraphStat</span></tt></a> provides function that calculate
+graph statistics. Currently there is only one such function, more may
+be added later.</p>
+<dl class="function">
+<dt id="altgraph.GraphStat.degree_dist">
+<tt class="descclassname">altgraph.GraphStat.</tt><tt class="descname">degree_dist</tt><big>(</big><em>graph</em><span class="optional">[</span>, <em>limits</em><span class="optional">[</span>, <em>bin_num</em><span class="optional">[</span>, <em>mode</em><span class="optional">]</span><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.GraphStat.degree_dist" title="Permalink to this definition">¶</a></dt>
+<dd><p>Groups the number of edges per node into <em>bin_num</em> bins
+and returns the list of those bins. Every item in the result
+is a tuple with the center of the bin and the number of items
+in that bin.</p>
+<p>When the <em>limits</em> argument is present it must be a tuple with
+the mininum and maximum number of edges that get binned (that
+is, when <em>limits</em> is <tt class="docutils literal"><span class="pre">(4,</span> <span class="pre">10)</span></tt> only nodes with between 4
+and 10 edges get counted.</p>
+<p>The <em>mode</em> argument is used to count incoming (<tt class="docutils literal"><span class="pre">'inc'</span></tt>) or
+outgoing (<tt class="docutils literal"><span class="pre">'out'</span></tt>) edges. The default is to count the outgoing
+edges.</p>
+</dd></dl>
+
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="graphalgo.html"
+                        title="previous chapter"><tt class="docutils literal"><span class="pre">altgraph.GraphAlgo</span></tt> &#8212; Graph algorithms</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="graphutil.html"
+                        title="next chapter"><tt class="docutils literal"><span class="pre">altgraph.GraphUtil</span></tt> &#8212; Utility functions</a></p>
+<div id="searchbox" style="display: none">
+  <h3>Quick search</h3>
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
+      <input type="submit" value="Go" />
+      <input type="hidden" name="check_keywords" value="yes" />
+      <input type="hidden" name="area" value="default" />
+    </form>
+    <p class="searchtip" style="font-size: 90%">
+    Enter search terms or a module, class or function name.
+    </p>
+</div>
+<script type="text/javascript">$('#searchbox').show(0);</script>
+        </div>
+      </div>
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+    </div>
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+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             >index</a></li>
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+             >modules</a> |</li>
+        <li class="right" >
+          <a href="graphutil.html" title="altgraph.GraphUtil — Utility functions"
+             >next</a> |</li>
+        <li class="right" >
+          <a href="graphalgo.html" title="altgraph.GraphAlgo — Graph algorithms"
+             >previous</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>
+    <div class="footer">
+        &copy; Copyright 2010-2011, Ronald Oussoren, Bob Ippolito, 2004 Istvan Albert.
+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.2.1.
+    </div>
+  </body>
+</html>
\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/graphutil.html b/python/altgraph/doc/_build/html/graphutil.html
new file mode 100644
index 000000000..774efcfdf
--- /dev/null
+++ b/python/altgraph/doc/_build/html/graphutil.html
@@ -0,0 +1,162 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>altgraph.GraphUtil — Utility functions &mdash; altgraph 0.11 documentation</title>
+    
+    <link rel="stylesheet" href="_static/nature.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript">
+      var DOCUMENTATION_OPTIONS = {
+        URL_ROOT:    './',
+        VERSION:     '0.11',
+        COLLAPSE_INDEX: false,
+        FILE_SUFFIX: '.html',
+        HAS_SOURCE:  true
+      };
+    </script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <link rel="top" title="altgraph 0.11 documentation" href="index.html" />
+    <link rel="next" title="altgraph.Dot — Interface to the dot language" href="dot.html" />
+    <link rel="prev" title="altgraph.GraphStat — Functions providing various graph statistics" href="graphstat.html" /> 
+  </head>
+  <body>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="right" >
+          <a href="py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li class="right" >
+          <a href="dot.html" title="altgraph.Dot — Interface to the dot language"
+             accesskey="N">next</a> |</li>
+        <li class="right" >
+          <a href="graphstat.html" title="altgraph.GraphStat — Functions providing various graph statistics"
+             accesskey="P">previous</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body">
+            
+  <div class="section" id="module-altgraph.GraphUtil">
+<span id="altgraph-graphutil-utility-functions"></span><h1><a class="reference internal" href="#module-altgraph.GraphUtil" title="altgraph.GraphUtil: Utility functions"><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.GraphUtil</span></tt></a> &#8212; Utility functions<a class="headerlink" href="#module-altgraph.GraphUtil" title="Permalink to this headline">¶</a></h1>
+<p>The module <a class="reference internal" href="#module-altgraph.GraphUtil" title="altgraph.GraphUtil: Utility functions"><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.GraphUtil</span></tt></a> performs a number of more
+or less useful utility functions.</p>
+<dl class="function">
+<dt id="altgraph.GraphUtil.generate_random_graph">
+<tt class="descclassname">altgraph.GraphUtil.</tt><tt class="descname">generate_random_graph</tt><big>(</big><em>node_num, edge_num[, self_loops[, multi_edges]</em><big>)</big><a class="headerlink" href="#altgraph.GraphUtil.generate_random_graph" title="Permalink to this definition">¶</a></dt>
+<dd><p>Generates and returns a <a class="reference internal" href="graph.html#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a> instance
+with <em>node_num</em> nodes randomly connected by <em>edge_num</em> edges.</p>
+<p>When <em>self_loops</em> is present and True there can be edges that point from
+a node to itself.</p>
+<p>When <em>multi_edge</em> is present and True there can be duplicate edges.</p>
+<p>This method raises <tt class="xref py py-class docutils literal"><span class="pre">GraphError</span> <span class="pre">&lt;altgraph.GraphError</span></tt> when
+a graph with the requested configuration cannot be created.</p>
+</dd></dl>
+
+<dl class="function">
+<dt id="altgraph.GraphUtil.generate_scale_free_graph">
+<tt class="descclassname">altgraph.GraphUtil.</tt><tt class="descname">generate_scale_free_graph</tt><big>(</big><em>steps</em>, <em>growth_num</em><span class="optional">[</span>, <em>self_loops</em><span class="optional">[</span>, <em>multi_edges</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.GraphUtil.generate_scale_free_graph" title="Permalink to this definition">¶</a></dt>
+<dd><p>Generates and returns a <a class="reference internal" href="graph.html#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a> instance that
+will have <em>steps*growth_n um</em> nodes and a scale free (powerlaw)
+connectivity.</p>
+<p>Starting with a fully connected graph with <em>growth_num</em> nodes
+at every step <em>growth_num</em> nodes are added to the graph and are connected
+to existing nodes with a probability proportional to the degree of these
+existing nodes.</p>
+<div class="admonition warning">
+<p class="first admonition-title">Warning</p>
+<p class="last">The current implementation is basically untested, although
+code inspection seems to indicate an implementation that is consistent
+with the description at
+<a class="reference external" href="http://mathworld.wolfram.com/Scale-FreeNetwork.html">Wolfram MathWorld</a></p>
+</div>
+</dd></dl>
+
+<dl class="function">
+<dt id="altgraph.GraphUtil.filter_stack">
+<tt class="descclassname">altgraph.GraphUtil.</tt><tt class="descname">filter_stack</tt><big>(</big><em>graph</em>, <em>head</em>, <em>filters</em><big>)</big><a class="headerlink" href="#altgraph.GraphUtil.filter_stack" title="Permalink to this definition">¶</a></dt>
+<dd><p>Perform a depth-first oder walk of the graph starting at <em>head</em> and
+apply all filter functions in <em>filters</em> on the node data of the nodes
+found.</p>
+<p>Returns (<em>visited</em>, <em>removes</em>, <em>orphans</em>), where</p>
+<ul class="simple">
+<li><em>visited</em>: the set of visited nodes</li>
+<li><em>removes</em>: the list of nodes where the node data doesn&#8217;t match
+all <em>filters</em>.</li>
+<li><em>orphans</em>: list of tuples (<em>last_good</em>, <em>node</em>), where
+node is not in <em>removes</em> and one of the nodes that is connected
+by an incoming edge is in <em>removes</em>. <em>Last_good</em> is the
+closest upstream node that is not in <em>removes</em>.</li>
+</ul>
+</dd></dl>
+
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="graphstat.html"
+                        title="previous chapter"><tt class="docutils literal"><span class="pre">altgraph.GraphStat</span></tt> &#8212; Functions providing various graph statistics</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="dot.html"
+                        title="next chapter"><tt class="docutils literal"><span class="pre">altgraph.Dot</span></tt> &#8212; Interface to the dot language</a></p>
+<div id="searchbox" style="display: none">
+  <h3>Quick search</h3>
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
+      <input type="submit" value="Go" />
+      <input type="hidden" name="check_keywords" value="yes" />
+      <input type="hidden" name="area" value="default" />
+    </form>
+    <p class="searchtip" style="font-size: 90%">
+    Enter search terms or a module, class or function name.
+    </p>
+</div>
+<script type="text/javascript">$('#searchbox').show(0);</script>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
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+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             >index</a></li>
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+             >modules</a> |</li>
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+             >next</a> |</li>
+        <li class="right" >
+          <a href="graphstat.html" title="altgraph.GraphStat — Functions providing various graph statistics"
+             >previous</a> |</li>
+        <li><a href="index.html">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>
+    <div class="footer">
+        &copy; Copyright 2010-2011, Ronald Oussoren, Bob Ippolito, 2004 Istvan Albert.
+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.2.1.
+    </div>
+  </body>
+</html>
\ No newline at end of file
diff --git a/python/altgraph/doc/_build/html/index.html b/python/altgraph/doc/_build/html/index.html
new file mode 100644
index 000000000..83c8c9a25
--- /dev/null
+++ b/python/altgraph/doc/_build/html/index.html
@@ -0,0 +1,142 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    
+    <title>Altgraph - A basic graph library &mdash; altgraph 0.11 documentation</title>
+    
+    <link rel="stylesheet" href="_static/nature.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript">
+      var DOCUMENTATION_OPTIONS = {
+        URL_ROOT:    './',
+        VERSION:     '0.11',
+        COLLAPSE_INDEX: false,
+        FILE_SUFFIX: '.html',
+        HAS_SOURCE:  true
+      };
+    </script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <link rel="top" title="altgraph 0.11 documentation" href="#" />
+    <link rel="next" title="Release history" href="changelog.html" /> 
+  </head>
+  <body>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="right" >
+          <a href="py-modindex.html" title="Python Module Index"
+             >modules</a> |</li>
+        <li class="right" >
+          <a href="changelog.html" title="Release history"
+             accesskey="N">next</a> |</li>
+        <li><a href="#">altgraph 0.11 documentation</a> &raquo;</li> 
+      </ul>
+    </div>  
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body">
+            
+  <div class="section" id="altgraph-a-basic-graph-library">
+<h1>Altgraph - A basic graph library<a class="headerlink" href="#altgraph-a-basic-graph-library" title="Permalink to this headline">¶</a></h1>
+<p>altgraph is a fork of graphlib: a graph (network) package for constructing
+graphs, BFS and DFS traversals, topological sort, shortest paths, etc. with
+graphviz output.</p>
+<p>The primary users of this package are <a class="reference external" href="http://pypi.python.org/pypi/macholib">macholib</a> and <a class="reference external" href="http://pypi.python.org/pypi/modulegraph">modulegraph</a>.</p>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="changelog.html">Release history</a></li>
+<li class="toctree-l1"><a class="reference internal" href="license.html">License</a></li>
+<li class="toctree-l1"><a class="reference internal" href="core.html"><tt class="docutils literal"><span class="pre">altgraph</span></tt> &#8212; A Python Graph Library</a></li>
+<li class="toctree-l1"><a class="reference internal" href="graph.html"><tt class="docutils literal"><span class="pre">altgraph.Graph</span></tt> &#8212; Basic directional graphs</a></li>
+<li class="toctree-l1"><a class="reference internal" href="objectgraph.html"><tt class="docutils literal"><span class="pre">altgraph.ObjectGraph</span></tt> &#8212; Graphs of objecs with an identifier</a></li>
+<li class="toctree-l1"><a class="reference internal" href="graphalgo.html"><tt class="docutils literal"><span class="pre">altgraph.GraphAlgo</span></tt> &#8212; Graph algorithms</a></li>
+<li class="toctree-l1"><a class="reference internal" href="graphstat.html"><tt class="docutils literal"><span class="pre">altgraph.GraphStat</span></tt> &#8212; Functions providing various graph statistics</a></li>
+<li class="toctree-l1"><a class="reference internal" href="graphutil.html"><tt class="docutils literal"><span class="pre">altgraph.GraphUtil</span></tt> &#8212; Utility functions</a></li>
+<li class="toctree-l1"><a class="reference internal" href="dot.html"><tt class="docutils literal"><span class="pre">altgraph.Dot</span></tt> &#8212; Interface to the dot language</a></li>
+</ul>
+</div>
+<div class="section" id="online-resources">
+<h2>Online Resources<a class="headerlink" href="#online-resources" title="Permalink to this headline">¶</a></h2>
+<ul class="simple">
+<li><a class="reference external" href="http://bitbucket.org/ronaldoussoren/altgraph/">Sourcecode repository on bitbucket</a></li>
+<li><a class="reference external" href="http://bitbucket.org/ronaldoussoren/altgraph/issues">The issue tracker</a></li>
+</ul>
+</div>
+<div class="section" id="indices-and-tables">
+<h2>Indices and tables<a class="headerlink" href="#indices-and-tables" title="Permalink to this headline">¶</a></h2>
+<ul class="simple">
+<li><a class="reference internal" href="genindex.html"><em>Index</em></a></li>
+<li><a class="reference internal" href="py-modindex.html"><em>Module Index</em></a></li>
+<li><a class="reference internal" href="search.html"><em>Search Page</em></a></li>
+</ul>
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
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+<li><a class="reference internal" href="#online-resources">Online Resources</a></li>
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diff --git a/python/altgraph/doc/_build/html/license.html b/python/altgraph/doc/_build/html/license.html
new file mode 100644
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@@ -0,0 +1,136 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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+  <div class="section" id="license">
+<h1>License<a class="headerlink" href="#license" title="Permalink to this headline">¶</a></h1>
+<p>Copyright (c) 2004 Istvan Albert unless otherwise noted.</p>
+<p>Parts are copyright (c) Bob Ippolito</p>
+<p>Parts are copyright (c) 2010-2014 Ronald Oussoren</p>
+<div class="section" id="mit-license">
+<h2>MIT License<a class="headerlink" href="#mit-license" title="Permalink to this headline">¶</a></h2>
+<p>Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+and associated documentation files (the &#8220;Software&#8221;), to deal in the Software without restriction,
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+  <h3><a href="index.html">Table Of Contents</a></h3>
+  <ul>
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+</html>
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diff --git a/python/altgraph/doc/_build/html/objectgraph.html b/python/altgraph/doc/_build/html/objectgraph.html
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,283 @@
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+    <title>altgraph.ObjectGraph — Graphs of objecs with an identifier &mdash; altgraph 0.11 documentation</title>
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+            
+  <div class="section" id="module-altgraph.ObjectGraph">
+<span id="altgraph-objectgraph-graphs-of-objecs-with-an-identifier"></span><h1><a class="reference internal" href="#module-altgraph.ObjectGraph" title="altgraph.ObjectGraph: A graph of objects that have a &quot;graphident&quot; attribute."><tt class="xref py py-mod docutils literal"><span class="pre">altgraph.ObjectGraph</span></tt></a> &#8212; Graphs of objecs with an identifier<a class="headerlink" href="#module-altgraph.ObjectGraph" title="Permalink to this headline">¶</a></h1>
+<dl class="class">
+<dt id="altgraph.ObjectGraph.ObjectGraph">
+<em class="property">class </em><tt class="descclassname">altgraph.ObjectGraph.</tt><tt class="descname">ObjectGraph</tt><big>(</big><span class="optional">[</span><em>graph</em><span class="optional">[</span>, <em>debug</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph" title="Permalink to this definition">¶</a></dt>
+<dd><p>A graph of objects that have a &#8220;graphident&#8221; attribute. The
+value of this attribute is the key for the object in the
+graph.</p>
+<p>The optional <em>graph</em> is a previously constructed
+<a class="reference internal" href="graph.html#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a>.</p>
+<p>The optional <em>debug</em> level controls the amount of debug output
+(see <a class="reference internal" href="#altgraph.ObjectGraph.ObjectGraph.msg" title="altgraph.ObjectGraph.ObjectGraph.msg"><tt class="xref py py-meth docutils literal"><span class="pre">msg()</span></tt></a>, <a class="reference internal" href="#altgraph.ObjectGraph.ObjectGraph.msgin" title="altgraph.ObjectGraph.ObjectGraph.msgin"><tt class="xref py py-meth docutils literal"><span class="pre">msgin()</span></tt></a> and <a class="reference internal" href="#altgraph.ObjectGraph.ObjectGraph.msgout" title="altgraph.ObjectGraph.ObjectGraph.msgout"><tt class="xref py py-meth docutils literal"><span class="pre">msgout()</span></tt></a>).</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">the altgraph library does not generate output, the
+debug attribute and message methods are present for use
+by subclasses.</p>
+</div>
+</dd></dl>
+
+<dl class="data">
+<dt id="altgraph.ObjectGraph.ObjectGraph.graph">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">graph</tt><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.graph" title="Permalink to this definition">¶</a></dt>
+<dd><p>An <a class="reference internal" href="graph.html#altgraph.Graph.Graph" title="altgraph.Graph.Graph"><tt class="xref py py-class docutils literal"><span class="pre">Graph</span></tt></a> object that contains
+the graph data.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.addNode">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">addNode</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.addNode" title="Permalink to this definition">¶</a></dt>
+<dd><p>Adds a <em>node</em> to the graph.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">re-adding a node that was previously removed
+using <a class="reference internal" href="#altgraph.ObjectGraph.ObjectGraph.removeNode" title="altgraph.ObjectGraph.ObjectGraph.removeNode"><tt class="xref py py-meth docutils literal"><span class="pre">removeNode()</span></tt></a> will reinstate the previously
+removed node.</p>
+</div>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.createNode">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">createNode</tt><big>(</big><em>self</em>, <em>cls</em>, <em>name</em>, <em>*args</em>, <em>**kwds</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.createNode" title="Permalink to this definition">¶</a></dt>
+<dd><p>Creates a new node using <tt class="docutils literal"><span class="pre">cls(*args,</span> <span class="pre">**kwds)</span></tt> and adds that
+node using <a class="reference internal" href="#altgraph.ObjectGraph.ObjectGraph.addNode" title="altgraph.ObjectGraph.ObjectGraph.addNode"><tt class="xref py py-meth docutils literal"><span class="pre">addNode()</span></tt></a>.</p>
+<p>Returns the newly created node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.removeNode">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">removeNode</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.removeNode" title="Permalink to this definition">¶</a></dt>
+<dd><p>Removes a <em>node</em> from the graph when it exists. The <em>node</em> argument
+is either a node object, or the graphident of a node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.createReferences">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">createReferences</tt><big>(</big><em>fromnode</em>, <em>tonode</em><span class="optional">[</span>, <em>edge_data</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.createReferences" title="Permalink to this definition">¶</a></dt>
+<dd><p>Creates a reference from <em>fromnode</em> to <em>tonode</em>. The optional
+<em>edge_data</em> is associated with the edge.</p>
+<p><em>Fromnode</em> and <em>tonode</em> can either be node objects or the graphident
+values for nodes.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.removeReference">
+<tt class="descclassname">altgraph.ObjectGraph.</tt><tt class="descname">removeReference</tt><big>(</big><em>fromnode</em>, <em>tonode</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.removeReference" title="Permalink to this definition">¶</a></dt>
+<dd><p>Removes the reference from <em>fromnode</em> to <em>tonode</em> if it exists.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.getRawIdent">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">getRawIdent</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.getRawIdent" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns the <em>graphident</em> attribute of <em>node</em>, or the graph itself
+when <em>node</em> is <a class="reference external" href="http://docs.python.org/library/constants.html#None" title="(in Python v2.7)"><tt class="xref py py-data docutils literal"><span class="pre">None</span></tt></a>.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.getIdent">
+<tt class="descclassname">altgraph.ObjectGraph.</tt><tt class="descname">getIdent</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.getIdent" title="Permalink to this definition">¶</a></dt>
+<dd><p>Same as <tt class="xref py py-meth docutils literal"><span class="pre">getRawIdent()</span></tt>, but only if the node is part
+of the graph.</p>
+<p><em>Node</em> can either be an actual node object or the graphident of
+a node.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.findNode">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">findNode</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.findNode" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns a given node in the graph, or <tt class="xref py py-data docutils literal"><span class="pre">Node</span></tt> when it cannot
+be found.</p>
+<p><em>Node</em> is either an object with a <em>graphident</em> attribute or
+the <em>graphident</em> attribute itself.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.__contains__">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">__contains__</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.__contains__" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns True if <em>node</em> is a member of the graph. <em>Node</em> is either an
+object with a <em>graphident</em> attribute or the <em>graphident</em> attribute itself.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.flatten">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">flatten</tt><big>(</big><span class="optional">[</span><em>condition</em><span class="optional">[</span>, <em>start</em><span class="optional">]</span><span class="optional">]</span><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.flatten" title="Permalink to this definition">¶</a></dt>
+<dd><p>Yield all nodes that are entirely reachable by <em>condition</em>
+starting fromt he given <em>start</em> node or the graph root.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">objects are only reachable from the graph root
+when there is a reference from the root to the node
+(either directly or through another node)</p>
+</div>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.nodes">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">nodes</tt><big>(</big><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.nodes" title="Permalink to this definition">¶</a></dt>
+<dd><p>Yield all nodes in the graph.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.get_edges">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">get_edges</tt><big>(</big><em>node</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.get_edges" title="Permalink to this definition">¶</a></dt>
+<dd><p>Returns two iterators that yield the nodes reaching by
+outgoing and incoming edges.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.filterStack">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">filterStack</tt><big>(</big><em>filters</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.filterStack" title="Permalink to this definition">¶</a></dt>
+<dd><p>Filter the ObjectGraph in-place by removing all edges to nodes that
+do not match every filter in the given filter list</p>
+<p>Returns a tuple containing the number of:
+(<em>nodes_visited</em>, <em>nodes_removed</em>, <em>nodes_orphaned</em>)</p>
+</dd></dl>
+
+<div class="section" id="debug-output">
+<h2>Debug output<a class="headerlink" href="#debug-output" title="Permalink to this headline">¶</a></h2>
+<dl class="data">
+<dt id="altgraph.ObjectGraph.ObjectGraph.debug">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">debug</tt><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.debug" title="Permalink to this definition">¶</a></dt>
+<dd><p>The current debug level.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.msg">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">msg</tt><big>(</big><em>level</em>, <em>text</em>, <em>*args</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.msg" title="Permalink to this definition">¶</a></dt>
+<dd><p>Print a debug message at the current indentation level when the current
+debug level is <em>level</em> or less.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.msgin">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">msgin</tt><big>(</big><em>level</em>, <em>text</em>, <em>*args</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.msgin" title="Permalink to this definition">¶</a></dt>
+<dd><p>Print a debug message when the current debug level is <em>level</em> or less,
+and increase the indentation level.</p>
+</dd></dl>
+
+<dl class="method">
+<dt id="altgraph.ObjectGraph.ObjectGraph.msgout">
+<tt class="descclassname">ObjectGraph.</tt><tt class="descname">msgout</tt><big>(</big><em>level</em>, <em>text</em>, <em>*args</em><big>)</big><a class="headerlink" href="#altgraph.ObjectGraph.ObjectGraph.msgout" title="Permalink to this definition">¶</a></dt>
+<dd><p>Decrease the indentation level and print a debug message when the
+current debug level is <em>level</em> or less.</p>
+</dd></dl>
+
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="index.html">Table Of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#"><tt class="docutils literal"><span class="pre">altgraph.ObjectGraph</span></tt> &#8212; Graphs of objecs with an identifier</a><ul>
+<li><a class="reference internal" href="#debug-output">Debug output</a></li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="graph.html"
+                        title="previous chapter"><tt class="docutils literal"><span class="pre">altgraph.Graph</span></tt> &#8212; Basic directional graphs</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="graphalgo.html"
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diff --git a/python/altgraph/doc/_build/html/objects.inv b/python/altgraph/doc/_build/html/objects.inv
new file mode 100644
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diff --git a/python/altgraph/doc/_build/html/py-modindex.html b/python/altgraph/doc/_build/html/py-modindex.html
new file mode 100644
index 000000000..dd60a9b2c
--- /dev/null
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@@ -0,0 +1,139 @@
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+       <strong>a</strong></td><td></td></tr>
+     <tr>
+       <td><img src="_static/minus.png" class="toggler"
+              id="toggle-1" style="display: none" alt="-" /></td>
+       <td>
+       <a href="core.html#module-altgraph"><tt class="xref">altgraph</tt></a></td><td>
+       <em>A directional graph for python</em></td></tr>
+     <tr class="cg-1">
+       <td></td>
+       <td>&nbsp;&nbsp;&nbsp;
+       <a href="dot.html#module-altgraph.Dot"><tt class="xref">altgraph.Dot</tt></a></td><td>
+       <em>Interface to the dot language as used by Graphviz..</em></td></tr>
+     <tr class="cg-1">
+       <td></td>
+       <td>&nbsp;&nbsp;&nbsp;
+       <a href="graph.html#module-altgraph.Graph"><tt class="xref">altgraph.Graph</tt></a></td><td>
+       <em>Basic directional graphs.</em></td></tr>
+     <tr class="cg-1">
+       <td></td>
+       <td>&nbsp;&nbsp;&nbsp;
+       <a href="graphalgo.html#module-altgraph.GraphAlgo"><tt class="xref">altgraph.GraphAlgo</tt></a></td><td>
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+       <td>&nbsp;&nbsp;&nbsp;
+       <a href="graphstat.html#module-altgraph.GraphStat"><tt class="xref">altgraph.GraphStat</tt></a></td><td>
+       <em>Functions providing various graph statistics</em></td></tr>
+     <tr class="cg-1">
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+       <td>&nbsp;&nbsp;&nbsp;
+       <a href="graphutil.html#module-altgraph.GraphUtil"><tt class="xref">altgraph.GraphUtil</tt></a></td><td>
+       <em>Utility functions</em></td></tr>
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+       <td>&nbsp;&nbsp;&nbsp;
+       <a href="objectgraph.html#module-altgraph.ObjectGraph"><tt class="xref">altgraph.ObjectGraph</tt></a></td><td>
+       <em>A graph of objects that have a &#34;graphident&#34; attribute.</em></td></tr>
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diff --git a/python/altgraph/doc/_build/html/search.html b/python/altgraph/doc/_build/html/search.html
new file mode 100644
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diff --git a/python/altgraph/doc/_build/html/searchindex.js b/python/altgraph/doc/_build/html/searchindex.js
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\ No newline at end of file
diff --git a/python/altgraph/doc/changelog.rst b/python/altgraph/doc/changelog.rst
new file mode 100644
index 000000000..02fd412d6
--- /dev/null
+++ b/python/altgraph/doc/changelog.rst
@@ -0,0 +1,185 @@
+Release history
+===============
+
+0.12
+----
+
+- Added ``ObjectGraph.edgeData`` to retrieve the edge data
+  from a specific edge.
+
+- Added ``AltGraph.update_edge_data`` and ``ObjectGraph.updateEdgeData``
+  to update the data associated with a graph edge.
+
+0.11
+----
+
+- Stabilize the order of elements in dot file exports,
+  patch from bitbucket user 'pombredanne'.
+
+- Tweak setup.py file to remove dependency on distribute (but
+  keep the dependency on setuptools)
+
+
+0.10.2
+------
+
+- There where no classifiers in the package metadata due to a bug
+  in setup.py
+
+0.10.1
+------
+
+This is a bugfix release
+
+Bug fixes:
+
+- Issue #3: The source archive contains a README.txt
+  while the setup file refers to ReadMe.txt.
+
+  This is caused by a misfeature in distutils, as a
+  workaround I've renamed ReadMe.txt to README.txt
+  in the source tree and setup file.
+
+
+0.10
+-----
+
+This is a minor feature release
+
+Features:
+
+- Do not use "2to3" to support Python 3.
+
+  As a side effect of this altgraph now supports
+  Python 2.6 and later, and no longer supports
+  earlier releases of Python.
+
+- The order of attributes in the Dot output
+  is now always alphabetical.
+
+  With this change the output will be consistent
+  between runs and Python versions.
+
+0.9
+---
+
+This is a minor bugfix release
+
+Features:
+
+- Added ``altgraph.ObjectGraph.ObjectGraph.nodes``, a method
+  yielding all nodes in an object graph.
+
+Bugfixes:
+
+- The 0.8 release didn't work with py2app when using
+  python 3.x.
+
+
+0.8
+-----
+
+This is a minor feature release. The major new feature
+is a extensive set of unittests, which explains almost
+all other changes in this release.
+
+Bugfixes:
+
+- Installing failed with Python 2.5 due to using a distutils
+  class that isn't available in that version of Python
+  (issue #1 on the issue tracker)
+
+- ``altgraph.GraphStat.degree_dist`` now actually works
+
+- ``altgraph.Graph.add_edge(a, b, create_nodes=False)`` will
+  no longer create the edge when one of the nodes doesn't
+  exist.
+
+- ``altgraph.Graph.forw_topo_sort`` failed for some sparse graphs.
+
+- ``altgraph.Graph.back_topo_sort`` was completely broken in
+  previous releases.
+
+- ``altgraph.Graph.forw_bfs_subgraph`` now actually works.
+
+- ``altgraph.Graph.back_bfs_subgraph`` now actually works.
+
+- ``altgraph.Graph.iterdfs`` now returns the correct result
+  when the ``forward`` argument is ``False``.
+
+- ``altgraph.Graph.iterdata`` now returns the correct result
+  when the ``forward`` argument is ``False``.
+
+
+Features:
+
+- The ``altgraph.Graph`` constructor now accepts an argument
+  that contains 2- and 3-tuples instead of requireing that
+  all items have the same size. The (optional) argument can now
+  also be any iterator.
+
+- ``altgraph.Graph.Graph.add_node`` has no effect when you
+  add a hidden node.
+
+- The private method ``altgraph.Graph._bfs`` is no longer
+  present.
+
+- The private method ``altgraph.Graph._dfs`` is no longer
+  present.
+
+- ``altgraph.ObjectGraph`` now has a ``__contains__`` methods,
+  which means you can use the ``in`` operator to check if a
+  node is part of a graph.
+
+- ``altgraph.GraphUtil.generate_random_graph`` will raise
+  ``GraphError`` instead of looping forever when it is
+  impossible to create the requested graph.
+
+- ``altgraph.Dot.edge_style`` raises ``GraphError`` when
+  one of the nodes is not present in the graph. The method
+  silently added the tail in the past, but without ensuring
+  a consistent graph state.
+
+- ``altgraph.Dot.save_img`` now works when the mode is
+  ``"neato"``.
+
+0.7.2
+-----
+
+This is a minor bugfix release
+
+Bugfixes:
+
+- distutils didn't include the documentation subtree
+
+0.7.1
+-----
+
+This is a minor feature release
+
+Features:
+
+- Documentation is now generated using `sphinx <http://pypi.python.org/pypi/sphinx>`_
+  and can be viewed at <http://packages.python.org/altgraph>.
+
+- The repository has moved to bitbucket
+
+- ``altgraph.GraphStat.avg_hops`` is no longer present, the function had no
+  implementation and no specified behaviour.
+
+- the module ``altgraph.compat`` is gone, which means altgraph will no
+  longer work with Python 2.3.
+
+
+0.7.0
+-----
+
+This is a minor feature release.
+
+Features:
+
+- Support for Python 3
+
+- It is now possible to run tests using 'python setup.py test'
+
+  (The actual testsuite is still very minimal though)
diff --git a/python/altgraph/doc/conf.py b/python/altgraph/doc/conf.py
new file mode 100644
index 000000000..cd3fd9912
--- /dev/null
+++ b/python/altgraph/doc/conf.py
@@ -0,0 +1,209 @@
+# -*- coding: utf-8 -*-
+#
+# altgraph documentation build configuration file, created by
+# sphinx-quickstart on Tue Aug 31 11:04:49 2010.
+#
+# This file is execfile()d with the current directory set to its containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import sys, os
+
+def get_version():
+    fn = os.path.join(
+            os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
+            'setup.cfg')
+    for ln in open(fn):
+        if ln.startswith('version'):
+            version = ln.split('=')[-1].strip()
+            return version
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#sys.path.append(os.path.abspath('.'))
+sys.path.insert(0,
+        os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+# -- General configuration -----------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = ['sphinx.ext.intersphinx', 'sphinx.ext.todo', 'sphinx.ext.autodoc' ]
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The encoding of source files.
+#source_encoding = 'utf-8'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'altgraph'
+copyright = u'2010-2011, Ronald Oussoren, Bob Ippolito, 2004 Istvan Albert'
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+# The short X.Y version.
+version = get_version()
+# The full version, including alpha/beta/rc tags.
+release = version
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#language = None
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+#today = ''
+# Else, today_fmt is used as the format for a strftime call.
+#today_fmt = '%B %d, %Y'
+
+# List of documents that shouldn't be included in the build.
+#unused_docs = []
+
+# List of directories, relative to source directory, that shouldn't be searched
+# for source files.
+exclude_trees = ['_build']
+
+# The reST default role (used for this markup: `text`) to use for all documents.
+#default_role = None
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+#add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+#add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+#show_authors = False
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+# A list of ignored prefixes for module index sorting.
+#modindex_common_prefix = []
+
+
+# -- Options for HTML output ---------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  Major themes that come with
+# Sphinx are currently 'default' and 'sphinxdoc'.
+html_theme = 'nature'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#html_theme_options = {}
+
+# Add any paths that contain custom themes here, relative to this directory.
+#html_theme_path = []
+
+# The name for this set of Sphinx documents.  If None, it defaults to
+# "<project> v<release> documentation".
+#html_title = None
+
+# A shorter title for the navigation bar.  Default is the same as html_title.
+#html_short_title = None
+
+# The name of an image file (relative to this directory) to place at the top
+# of the sidebar.
+#html_logo = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+#html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+#html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+#html_use_smartypants = True
+
+# Custom sidebar templates, maps document names to template names.
+#html_sidebars = {}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+#html_additional_pages = {}
+
+# If false, no module index is generated.
+#html_use_modindex = True
+
+# If false, no index is generated.
+#html_use_index = True
+
+# If true, the index is split into individual pages for each letter.
+#html_split_index = False
+
+# If true, links to the reST sources are added to the pages.
+html_show_sourcelink = False
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it.  The value of this option must be the
+# base URL from which the finished HTML is served.
+#html_use_opensearch = ''
+
+# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
+#html_file_suffix = ''
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'altgraphdoc'
+
+
+# -- Options for LaTeX output --------------------------------------------------
+
+# The paper size ('letter' or 'a4').
+#latex_paper_size = 'letter'
+
+# The font size ('10pt', '11pt' or '12pt').
+#latex_font_size = '10pt'
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title, author, documentclass [howto/manual]).
+latex_documents = [
+  ('index', 'altgraph.tex', u'altgraph Documentation',
+   u'Ronald Oussoren', 'manual'),
+]
+
+# The name of an image file (relative to this directory) to place at the top of
+# the title page.
+#latex_logo = None
+
+# For "manual" documents, if this is true, then toplevel headings are parts,
+# not chapters.
+#latex_use_parts = False
+
+# Additional stuff for the LaTeX preamble.
+#latex_preamble = ''
+
+# Documents to append as an appendix to all manuals.
+#latex_appendices = []
+
+# If false, no module index is generated.
+#latex_use_modindex = True
+
+
+# Example configuration for intersphinx: refer to the Python standard library.
+intersphinx_mapping = {'python': ('http://docs.python.org/', None) }
diff --git a/python/altgraph/doc/core.rst b/python/altgraph/doc/core.rst
new file mode 100644
index 000000000..8288f6a94
--- /dev/null
+++ b/python/altgraph/doc/core.rst
@@ -0,0 +1,26 @@
+:mod:`altgraph` --- A Python Graph Library
+==================================================
+
+.. module:: altgraph
+   :synopsis: A directional graph for python
+
+altgraph is a fork of `graphlib <http://pygraphlib.sourceforge.net>`_ tailored
+to use newer Python 2.3+ features, including additional support used by the
+py2app suite (modulegraph and macholib, specifically).
+
+altgraph is a python based graph (network) representation and manipulation package.
+It has started out as an extension to the `graph_lib module <http://www.ece.arizona.edu/~denny/python_nest/graph_lib_1.0.1.html>`_
+written by Nathan Denny it has been significantly optimized and expanded.
+
+The :class:`altgraph.Graph.Graph` class is loosely modeled after the `LEDA <http://www.algorithmic-solutions.com/enleda.htm>`_ 
+(Library of Efficient Datatypes)  representation. The library
+includes methods for constructing graphs, BFS and DFS traversals,
+topological sort, finding connected components, shortest paths as well as a number
+graph statistics functions. The library can also visualize graphs
+via `graphviz <http://www.research.att.com/sw/tools/graphviz/>`_.
+
+
+.. exception:: GraphError
+
+   Exception raised when methods are called with bad values of
+   an inconsistent state.
diff --git a/python/altgraph/doc/dot.rst b/python/altgraph/doc/dot.rst
new file mode 100644
index 000000000..3848c488a
--- /dev/null
+++ b/python/altgraph/doc/dot.rst
@@ -0,0 +1,224 @@
+:mod:`altgraph.Dot` --- Interface to the dot language
+=====================================================
+
+.. module:: altgraph.Dot
+   :synopsis: Interface to the dot language as used by Graphviz..
+
+The :py:mod:`~altgraph.Dot` module provides a simple interface to the
+file format used in the `graphviz`_ program. The module is intended to 
+offload the most tedious part of the process (the **dot** file generation) 
+while transparently exposing most of its features.
+
+.. _`graphviz`: <http://www.research.att.com/sw/tools/graphviz/>`_
+
+To display the graphs or to generate image files the `graphviz`_
+package needs to be installed on the system, moreover the :command:`dot` and :command:`dotty` programs must
+be accesible in the program path so that they can be ran from processes spawned
+within the module. 
+
+Example usage
+-------------
+
+Here is a typical usage::
+
+    from altgraph import Graph, Dot
+
+    # create a graph
+    edges = [ (1,2), (1,3), (3,4), (3,5), (4,5), (5,4) ]
+    graph = Graph.Graph(edges)
+    
+    # create a dot representation of the graph
+    dot = Dot.Dot(graph)
+
+    # display the graph
+    dot.display()
+
+    # save the dot representation into the mydot.dot file
+    dot.save_dot(file_name='mydot.dot')
+
+    # save dot file as gif image into the graph.gif file
+    dot.save_img(file_name='graph', file_type='gif')
+
+
+Directed graph and non-directed graph
+-------------------------------------
+
+Dot class can use for both directed graph and non-directed graph
+by passing *graphtype* parameter.
+
+Example::
+
+    # create directed graph(default)
+    dot = Dot.Dot(graph, graphtype="digraph")
+
+    # create non-directed graph
+    dot = Dot.Dot(graph, graphtype="graph")
+
+
+Customizing the output
+----------------------
+
+The graph drawing process may be customized by passing
+valid :command:`dot` parameters for the nodes and edges. For a list of all
+parameters see the `graphviz`_ documentation.
+
+Example::
+
+    # customizing the way the overall graph is drawn
+    dot.style(size='10,10', rankdir='RL', page='5, 5' , ranksep=0.75)
+
+    # customizing node drawing
+    dot.node_style(1, label='BASE_NODE',shape='box', color='blue' )
+    dot.node_style(2, style='filled', fillcolor='red')
+
+    # customizing edge drawing
+    dot.edge_style(1, 2, style='dotted')
+    dot.edge_style(3, 5, arrowhead='dot', label='binds', labelangle='90')
+    dot.edge_style(4, 5, arrowsize=2, style='bold')
+
+
+    .. note:: 
+       
+       dotty (invoked via :py:func:`~altgraph.Dot.display`) may not be able to
+       display all graphics styles. To verify the output save it to an image 
+       file and look at it that way.
+
+Valid attributes
+----------------
+
+- dot styles, passed via the :py:meth:`Dot.style` method::
+
+    rankdir = 'LR'   (draws the graph horizontally, left to right)
+    ranksep = number (rank separation in inches)
+
+- node attributes, passed via the :py:meth:`Dot.node_style` method::
+
+     style = 'filled' | 'invisible' | 'diagonals' | 'rounded'
+     shape = 'box' | 'ellipse' | 'circle' | 'point' | 'triangle'
+
+- edge attributes, passed via the :py:meth:`Dot.edge_style` method::
+
+     style     = 'dashed' | 'dotted' | 'solid' | 'invis' | 'bold'
+     arrowhead = 'box' | 'crow' | 'diamond' | 'dot' | 'inv' | 'none' | 'tee' | 'vee'
+     weight    = number (the larger the number the closer the nodes will be)
+
+- valid `graphviz colors <http://www.research.att.com/~erg/graphviz/info/colors.html>`_
+
+- for more details on how to control the graph drawing process see the 
+  `graphviz reference <http://www.research.att.com/sw/tools/graphviz/refs.html>`_.
+
+
+Class interface
+---------------
+
+.. class:: Dot(graph[, nodes[, edgefn[, nodevisitor[, edgevisitor[, name[, dot[, dotty[, neato[, graphtype]]]]]]]]])
+
+  Creates a new Dot generator based on the specified 
+  :class:`Graph <altgraph.Graph.Graph>`.  The Dot generator won't reference
+  the *graph* once it is constructed.
+
+  If the *nodes* argument is present it is the list of nodes to include
+  in the graph, otherwise all nodes in *graph* are included.
+  
+  If the *edgefn* argument is present it is a function that yields the
+  nodes connected to another node, this defaults to 
+  :meth:`graph.out_nbr <altgraph.Graph.Graph.out_nbr>`. The constructor won't
+  add edges to the dot file unless both the head and tail of the edge
+  are in *nodes*.
+
+  If the *name* is present it specifies the name of the graph in the resulting
+  dot file. The default is ``"G"``.
+
+  The functions *nodevisitor* and *edgevisitor* return the default style
+  for a given edge or node (both default to functions that return an empty
+  style).
+
+  The arguments *dot*, *dotty* and *neato* are used to pass the path to 
+  the corresponding `graphviz`_ command.
+
+
+Updating graph attributes
+.........................
+
+.. method:: Dot.style(\**attr)
+
+   Sets the overall style (graph attributes) to the given attributes.
+
+   See `Valid Attributes`_ for more information about the attributes.
+
+.. method:: Dot.node_style(node, \**attr)
+
+   Sets the style for *node* to the given attributes.
+
+   This method will add *node* to the graph when it isn't already 
+   present.
+
+   See `Valid Attributes`_ for more information about the attributes.
+
+.. method:: Dot.all_node_style(\**attr)
+
+   Replaces the current style for all nodes
+
+
+.. method:: edge_style(head, tail, \**attr)
+
+   Sets the style of an edge to the given attributes. The edge will
+   be added to the graph when it isn't already present, but *head*
+   and *tail* must both be valid nodes.
+
+   See `Valid Attributes`_ for more information about the attributes.
+
+
+
+Emitting output
+...............
+
+.. method:: Dot.display([mode])
+
+   Displays the current graph via dotty.
+
+   If the *mode* is ``"neato"`` the dot file is processed with
+   the neato command before displaying.
+
+   This method won't return until the dotty command exits.
+
+.. method:: save_dot(filename)
+
+   Saves the current graph representation into the given file.
+
+   .. note::
+
+       For backward compatibility reasons this method can also
+       be called without an argument, it will then write the graph
+       into a fixed filename (present in the attribute :data:`Graph.temp_dot`).
+
+       This feature is deprecated and should not be used.
+
+
+.. method:: save_image(file_name[, file_type[, mode]])
+
+   Saves the current graph representation as an image file. The output
+   is written into a file whose basename is *file_name* and whose suffix
+   is *file_type*.
+
+   The *file_type* specifies the type of file to write, the default
+   is ``"gif"``.
+
+   If the *mode* is ``"neato"`` the dot file is processed with
+   the neato command before displaying.
+
+   .. note::
+
+       For backward compatibility reasons this method can also
+       be called without an argument, it will then write the graph
+       with a fixed basename (``"out"``).
+
+       This feature is deprecated and should not be used.
+
+.. method:: iterdot()
+
+   Yields all lines of a `graphviz`_ input file (including line endings).
+
+.. method:: __iter__()
+
+   Alias for the :meth:`iterdot` method.
diff --git a/python/altgraph/doc/graph.rst b/python/altgraph/doc/graph.rst
new file mode 100644
index 000000000..502a2186a
--- /dev/null
+++ b/python/altgraph/doc/graph.rst
@@ -0,0 +1,305 @@
+:mod:`altgraph.Graph` --- Basic directional graphs
+==================================================
+
+.. module:: altgraph.Graph
+   :synopsis: Basic directional graphs.
+
+The module :mod:`altgraph.Graph` provides a class :class:`Graph` that
+represents a directed graph with *N* nodes and *E* edges.
+
+.. class:: Graph([edges])
+
+  Constructs a new empty :class:`Graph` object. If the optional
+  *edges* parameter is supplied, updates the graph by adding the
+  specified edges.
+
+  All of the elements in *edges* should be tuples with two or three
+  elements. The first two elements of the tuple are the source and
+  destination node of the edge, the optional third element is the
+  edge data.  The source and destination nodes are added to the graph
+  when the aren't already present.
+
+
+Node related methods
+--------------------
+
+.. method:: Graph.add_node(node[, node_data])
+
+   Adds a new node to the graph if it is not already present. The new
+   node must be a hashable object.
+
+   Arbitrary data can be attached to the node via the optional *node_data*
+   argument.
+
+   .. note:: the node also won't be added to the graph when it is
+      present but currently hidden.
+
+
+.. method:: Graph.hide_node(node)
+
+   Hides a *node* from the graph. The incoming and outgoing edges of
+   the node will also be hidden.
+
+   Raises :class:`altgraph.GraphError` when the node is not (visible)
+   node of the graph.
+
+
+.. method:: Graph.restore_node(node)
+
+   Restores a previously hidden *node*. The incoming and outgoing
+   edges of the node are also restored.
+
+   Raises :class:`altgraph.GraphError` when the node is not a hidden
+   node of the graph.
+
+.. method:: Graph.restore_all_nodes()
+
+   Restores all hidden nodes.
+
+.. method:: Graph.number_of_nodes()
+
+   Return the number of visible nodes in the graph.
+
+.. method:: Graph.number_of_hidden_nodes()
+
+   Return the number of hidden nodes in the graph.
+
+.. method:: Graph.node_list()
+
+   Return a list with all visible nodes in the graph.
+
+.. method:: Graph.hidden_node_list()
+
+   Return a list with all hidden nodes in the graph.
+
+.. method:: node_data(node)
+
+   Return the data associated with the *node* when it was
+   added.
+
+.. method:: Graph.describe_node(node)
+
+   Returns *node*, the node's data and the lists of outgoing
+   and incoming edges for the node.
+
+   .. note::
+
+      the edge lists should not be modified, doing so
+      can result in unpredicatable behavior.
+
+.. method:: Graph.__contains__(node)
+
+   Returns True iff *node* is a node in the graph. This
+   method is accessed through the *in* operator.
+
+.. method:: Graph.__iter__()
+
+   Yield all nodes in the graph.
+
+.. method:: Graph.out_edges(node)
+
+   Return the list of outgoing edges for *node*
+
+.. method:: Graph.inc_edges(node)
+
+   Return the list of incoming edges for *node*
+
+.. method:: Graph.all_edges(node)
+
+   Return the list of incoming and outgoing edges for *node*
+
+.. method:: Graph.out_degree(node)
+
+   Return the number of outgoing edges for *node*.
+
+.. method:: Graph.inc_degree(node)
+
+   Return the number of incoming edges for *node*.
+
+.. method:: Graph.all_degree(node)
+
+   Return the number of edges (incoming or outgoing) for *node*.
+
+Edge related methods
+--------------------
+
+.. method:: Graph.add_edge(head_id, tail_id [, edge data [, create_nodes]])
+
+   Adds a directed edge from *head_id* to *tail_id*. Arbitrary data can
+   be added via *edge_data*.  When *create_nodes* is *True* (the default),
+   *head_id* and *tail_id* will be added to the graph when the aren't
+   already present.
+
+.. method:: Graph.hide_edge(edge)
+
+   Hides an edge from the graph. The edge may be unhidden at some later
+   time.
+
+.. method:: Graph.restore_edge(edge)
+
+   Restores a previously hidden *edge*.
+
+.. method:: Graph.restore_all_edges()
+
+   Restore all edges that were hidden before, except for edges
+   referring to hidden nodes.
+
+.. method:: Graph.edge_by_node(head, tail)
+
+   Return the edge ID for an edge from *head* to *tail*,
+   or :data:`None` when no such edge exists.
+
+.. method:: Graph.edge_by_id(edge)
+
+   Return the head and tail of the *edge*
+
+.. method:: Graph.edge_data(edge)
+
+   Return the data associated with the *edge*.
+
+.. method:: Graph.update_edge_data(edge, data)
+
+   Replace the edge data for *edge* by *data*. Raises
+   :exc:`KeyError` when the edge does not exist.
+
+   .. versionadded:: 0.12
+
+.. method:: Graph.head(edge)
+
+   Return the head of an *edge*
+
+.. method:: Graph.tail(edge)
+
+   Return the tail of an *edge*
+
+.. method:: Graph.describe_edge(edge)
+
+   Return the *edge*, the associated data, its head and tail.
+
+.. method:: Graph.number_of_edges()
+
+   Return the number of visible edges.
+
+.. method:: Graph.number_of_hidden_edges()
+
+   Return the number of hidden edges.
+
+.. method:: Graph.edge_list()
+
+   Returns a list with all visible edges in the graph.
+
+.. method:: Graph.hidden_edge_list()
+
+   Returns a list with all hidden edges in the graph.
+
+Graph traversal
+---------------
+
+.. method:: Graph.out_nbrs(node)
+
+   Return a list of all nodes connected by outgoing edges.
+
+.. method:: Graph.inc_nbrs(node)
+
+   Return a list of all nodes connected by incoming edges.
+
+.. method:: Graph.all_nbrs(node)
+
+   Returns a list of nodes connected by an incoming or outgoing edge.
+
+.. method:: Graph.forw_topo_sort()
+
+   Return a list of nodes where the successors (based on outgoing
+   edges) of any given node apear in the sequence after that node.
+
+.. method:: Graph.back_topo_sort()
+
+   Return a list of nodes where the successors (based on incoming
+   edges) of any given node apear in the sequence after that node.
+
+.. method:: Graph.forw_bfs_subgraph(start_id)
+
+   Return a subgraph consisting of the breadth first
+   reachable nodes from *start_id* based on their outgoing edges.
+
+
+.. method:: Graph.back_bfs_subgraph(start_id)
+
+   Return a subgraph consisting of the breadth first
+   reachable nodes from *start_id* based on their incoming edges.
+
+.. method:: Graph.iterdfs(start[, end[, forward]])
+
+   Yield nodes in a depth first traversal starting at the *start*
+   node.
+
+   If *end* is specified traversal stops when reaching that node.
+
+   If forward is True (the default) edges are traversed in forward
+   direction, otherwise they are traversed in reverse direction.
+
+.. method:: Graph.iterdata(start[, end[, forward[, condition]]])
+
+   Yield the associated data for nodes in a depth first traversal
+   starting at the *start* node. This method will not yield values for nodes
+   without associated data.
+
+   If *end* is specified traversal stops when reaching that node.
+
+   If *condition* is specified and the condition callable returns
+   False for the associated data this method will not yield the
+   associated data and will not follow the edges for the node.
+
+   If forward is True (the default) edges are traversed in forward
+   direction, otherwise they are traversed in reverse direction.
+
+.. method:: Graph.forw_bfs(start[, end])
+
+   Returns a list of nodes starting at *start* in some bread first
+   search order (following outgoing edges).
+
+   When *end* is specified iteration stops at that node.
+
+.. method:: Graph.back_bfs(start[, end])
+
+   Returns a list of nodes starting at *start* in some bread first
+   search order (following incoming edges).
+
+   When *end* is specified iteration stops at that node.
+
+.. method:: Graph.get_hops(start[, end[, forward]])
+
+   Computes the hop distance to all nodes centered around a specified node.
+
+   First order neighbours are at hop 1, their neigbours are at hop 2 etc.
+   Uses :py:meth:`forw_bfs` or :py:meth:`back_bfs` depending on the value of
+   the forward parameter.
+
+   If the distance between all neighbouring nodes is 1 the hop number
+   corresponds to the shortest distance between the nodes.
+
+   Typical usage::
+
+        >>> print graph.get_hops(1, 8)
+        >>> [(1, 0), (2, 1), (3, 1), (4, 2), (5, 3), (7, 4), (8, 5)]
+        # node 1 is at 0 hops
+        # node 2 is at 1 hop
+        # ...
+        # node 8 is at 5 hops
+
+
+Graph statistics
+----------------
+
+.. method:: Graph.connected()
+
+   Returns True iff every node in the graph can be reached from
+   every other node.
+
+.. method:: Graph.clust_coef(node)
+
+   Returns the local clustering coefficient of node.
+
+   The local cluster coefficient is the proportion of the actual number
+   of edges between neighbours of node and the maximum number of
+   edges between those nodes.
diff --git a/python/altgraph/doc/graphalgo.rst b/python/altgraph/doc/graphalgo.rst
new file mode 100644
index 000000000..84d492f44
--- /dev/null
+++ b/python/altgraph/doc/graphalgo.rst
@@ -0,0 +1,26 @@
+:mod:`altgraph.GraphAlgo` --- Graph algorithms
+==================================================
+
+.. module:: altgraph.GraphAlgo
+   :synopsis: Basic graphs algoritms
+
+.. function:: dijkstra(graph, start[, end])
+
+   Dijkstra's algorithm for shortest paths.
+
+   Find shortest paths from the  start node to all nodes nearer 
+   than or equal to the *end* node. The edge data is assumed to be the edge length.
+
+   .. note::
+
+       Dijkstra's algorithm is only guaranteed to work correctly when all edge lengths are positive.
+       This code does not verify this property for all edges (only the edges examined until the end
+       vertex is reached), but will correctly compute shortest paths even for some graphs with negative
+       edges, and will raise an exception if it discovers that a negative edge has caused it to make a mistake.
+
+
+.. function:: shortest_path(graph, start, end)
+
+   Find a single shortest path from the given start node to the given end node.
+   The input has the same conventions as :func:`dijkstra`. The output is a list 
+   of the nodes in order along the shortest path.
diff --git a/python/altgraph/doc/graphstat.rst b/python/altgraph/doc/graphstat.rst
new file mode 100644
index 000000000..0931a12dd
--- /dev/null
+++ b/python/altgraph/doc/graphstat.rst
@@ -0,0 +1,25 @@
+:mod:`altgraph.GraphStat` --- Functions providing various graph statistics
+==========================================================================
+
+.. module:: altgraph.GraphStat
+   :synopsis: Functions providing various graph statistics
+
+The module :mod:`altgraph.GraphStat` provides function that calculate
+graph statistics. Currently there is only one such function, more may
+be added later.
+
+.. function:: degree_dist(graph[, limits[, bin_num[, mode]]])
+
+   Groups the number of edges per node into *bin_num* bins
+   and returns the list of those bins. Every item in the result
+   is a tuple with the center of the bin and the number of items
+   in that bin.
+
+   When the *limits* argument is present it must be a tuple with
+   the mininum and maximum number of edges that get binned (that
+   is, when *limits* is ``(4, 10)`` only nodes with between 4
+   and 10 edges get counted.
+
+   The *mode* argument is used to count incoming (``'inc'``) or
+   outgoing (``'out'``) edges. The default is to count the outgoing
+   edges.
diff --git a/python/altgraph/doc/graphutil.rst b/python/altgraph/doc/graphutil.rst
new file mode 100644
index 000000000..c07836df8
--- /dev/null
+++ b/python/altgraph/doc/graphutil.rst
@@ -0,0 +1,55 @@
+:mod:`altgraph.GraphUtil` --- Utility functions
+================================================
+
+.. module:: altgraph.GraphUtil
+   :synopsis: Utility functions
+
+The module :mod:`altgraph.GraphUtil` performs a number of more
+or less useful utility functions.
+
+.. function:: generate_random_graph(node_num, edge_num[, self_loops[, multi_edges])
+
+   Generates and returns a :class:`Graph <altgraph.Graph.Graph>` instance
+   with *node_num* nodes randomly connected by *edge_num* edges.
+
+   When *self_loops* is present and True there can be edges that point from
+   a node to itself.
+
+   When *multi_edge* is present and True there can be duplicate edges.
+
+   This method raises :class:`GraphError <altgraph.GraphError` when
+   a graph with the requested configuration cannot be created.
+
+.. function:: generate_scale_free_graph(steps, growth_num[, self_loops[, multi_edges]])
+
+    Generates and returns a :py:class:`~altgraph.Graph.Graph` instance that 
+    will have *steps*growth_n um* nodes and a scale free (powerlaw) 
+    connectivity. 
+    
+    Starting with a fully connected graph with *growth_num* nodes
+    at every step *growth_num* nodes are added to the graph and are connected 
+    to existing nodes with a probability proportional to the degree of these 
+    existing nodes.
+
+    .. warning:: The current implementation is basically untested, although
+       code inspection seems to indicate an implementation that is consistent
+       with the description at 
+       `Wolfram MathWorld <http://mathworld.wolfram.com/Scale-FreeNetwork.html>`_
+
+.. function:: filter_stack(graph, head, filters)
+
+   Perform a depth-first oder walk of the graph starting at *head* and
+   apply all filter functions in *filters* on the node data of the nodes
+   found.
+
+   Returns (*visited*, *removes*, *orphans*), where
+
+   * *visited*: the set of visited nodes
+
+   * *removes*: the list of nodes where the node data doesn't match
+     all *filters*.
+
+   * *orphans*: list of tuples (*last_good*, *node*), where 
+     node is not in *removes* and one of the nodes that is connected
+     by an incoming edge is in *removes*. *Last_good* is the
+     closest upstream node that is not in *removes*.
diff --git a/python/altgraph/doc/index.rst b/python/altgraph/doc/index.rst
new file mode 100644
index 000000000..1e8d504ed
--- /dev/null
+++ b/python/altgraph/doc/index.rst
@@ -0,0 +1,41 @@
+.. altgraph documentation master file, created by
+   sphinx-quickstart on Tue Aug 31 11:04:49 2010.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Altgraph - A basic graph library
+================================
+
+altgraph is a fork of graphlib: a graph (network) package for constructing
+graphs, BFS and DFS traversals, topological sort, shortest paths, etc. with
+graphviz output.
+
+The primary users of this package are `macholib <http://pypi.python.org/pypi/macholib>`_ and `modulegraph <http://pypi.python.org/pypi/modulegraph>`_.
+
+.. toctree::
+   :maxdepth: 1
+
+   changelog
+   license
+   core
+   graph
+   objectgraph
+   graphalgo
+   graphstat
+   graphutil
+   dot
+
+Online Resources
+----------------
+
+* `Sourcecode repository on bitbucket <http://bitbucket.org/ronaldoussoren/altgraph/>`_
+
+* `The issue tracker <http://bitbucket.org/ronaldoussoren/altgraph/issues>`_
+
+Indices and tables
+------------------
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
diff --git a/python/altgraph/doc/license.rst b/python/altgraph/doc/license.rst
new file mode 100644
index 000000000..498e60be0
--- /dev/null
+++ b/python/altgraph/doc/license.rst
@@ -0,0 +1,25 @@
+License
+=======
+
+Copyright (c) 2004 Istvan Albert unless otherwise noted.
+
+Parts are copyright (c) Bob Ippolito
+
+Parts are copyright (c) 2010-2014 Ronald Oussoren
+
+MIT License
+...........
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+and associated documentation files (the "Software"), to deal in the Software without restriction,
+including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do
+so.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
diff --git a/python/altgraph/doc/objectgraph.rst b/python/altgraph/doc/objectgraph.rst
new file mode 100644
index 000000000..e3df396b1
--- /dev/null
+++ b/python/altgraph/doc/objectgraph.rst
@@ -0,0 +1,146 @@
+:mod:`altgraph.ObjectGraph` --- Graphs of objecs with an identifier
+===================================================================
+
+.. module:: altgraph.ObjectGraph
+   :synopsis: A graph of objects that have a "graphident" attribute.
+
+.. class:: ObjectGraph([graph[, debug]])
+
+   A graph of objects that have a "graphident" attribute. The
+   value of this attribute is the key for the object in the
+   graph.
+
+   The optional *graph* is a previously constructed
+   :class:`Graph <altgraph.Graph.Graph>`.
+
+   The optional *debug* level controls the amount of debug output
+   (see :meth:`msg`, :meth:`msgin` and :meth:`msgout`).
+
+   .. note:: the altgraph library does not generate output, the
+      debug attribute and message methods are present for use
+      by subclasses.
+
+.. data:: ObjectGraph.graph
+
+   An :class:`Graph <altgraph.Graph.Graph>` object that contains
+   the graph data.
+
+
+.. method:: ObjectGraph.addNode(node)
+
+   Adds a *node* to the graph.
+
+   .. note:: re-adding a node that was previously removed
+      using :meth:`removeNode` will reinstate the previously
+      removed node.
+
+.. method:: ObjectGraph.createNode(self, cls, name, \*args, \**kwds)
+
+   Creates a new node using ``cls(*args, **kwds)`` and adds that
+   node using :meth:`addNode`.
+
+   Returns the newly created node.
+
+.. method:: ObjectGraph.removeNode(node)
+
+   Removes a *node* from the graph when it exists. The *node* argument
+   is either a node object, or the graphident of a node.
+
+.. method:: ObjectGraph.createReferences(fromnode, tonode[, edge_data])
+
+   Creates a reference from *fromnode* to *tonode*. The optional
+   *edge_data* is associated with the edge.
+
+   *Fromnode* and *tonode* can either be node objects or the graphident
+   values for nodes.
+
+.. method:: removeReference(fromnode, tonode)
+
+   Removes the reference from *fromnode* to *tonode* if it exists.
+
+.. method:: ObjectGraph.getRawIdent(node)
+
+   Returns the *graphident* attribute of *node*, or the graph itself
+   when *node* is :data:`None`.
+
+.. method:: getIdent(node)
+
+   Same as :meth:`getRawIdent`, but only if the node is part
+   of the graph.
+
+   *Node* can either be an actual node object or the graphident of
+   a node.
+
+.. method:: ObjectGraph.findNode(node)
+
+   Returns a given node in the graph, or :data:`Node` when it cannot
+   be found.
+
+   *Node* is either an object with a *graphident* attribute or
+   the *graphident* attribute itself.
+
+.. method:: ObjectGraph.__contains__(node)
+
+   Returns True if *node* is a member of the graph. *Node* is either an
+   object with a *graphident* attribute or the *graphident* attribute itself.
+
+.. method:: ObjectGraph.flatten([condition[, start]])
+
+   Yield all nodes that are entirely reachable by *condition*
+   starting fromt he given *start* node or the graph root.
+
+   .. note:: objects are only reachable from the graph root
+      when there is a reference from the root to the node
+      (either directly or through another node)
+
+.. method:: ObjectGraph.nodes()
+
+   Yield all nodes in the graph.
+
+.. method:: ObjectGraph.get_edges(node)
+
+   Returns two iterators that yield the nodes reaching by
+   outgoing and incoming edges.
+
+.. method:: ObjectGraph.filterStack(filters)
+
+   Filter the ObjectGraph in-place by removing all edges to nodes that
+   do not match every filter in the given filter list
+
+   Returns a tuple containing the number of:
+   (*nodes_visited*, *nodes_removed*, *nodes_orphaned*)
+
+.. method:: ObjectGraph.edgeData(fromNode, toNode):
+   Return the edge data associated with the edge from *fromNode*
+   to *toNode*.  Raises :exc:`KeyError` when no such edge exists.
+
+   .. versionadded: 0.12
+
+.. method:: ObjectGraph.updateEdgeData(fromNode, toNode, edgeData)
+
+   Replace the data associated with the edge from *fromNode* to
+   *toNode* by *edgeData*.
+
+   Raises :exc:`KeyError` when the edge does not exist.
+
+Debug output
+------------
+
+.. data:: ObjectGraph.debug
+
+   The current debug level.
+
+.. method:: ObjectGraph.msg(level, text, \*args)
+
+   Print a debug message at the current indentation level when the current
+   debug level is *level* or less.
+
+.. method:: ObjectGraph.msgin(level, text, \*args)
+
+   Print a debug message when the current debug level is *level* or less,
+   and increase the indentation level.
+
+.. method:: ObjectGraph.msgout(level, text, \*args)
+
+   Decrease the indentation level and print a debug message when the
+   current debug level is *level* or less.
diff --git a/python/altgraph/setup.cfg b/python/altgraph/setup.cfg
new file mode 100644
index 000000000..9c6880e3c
--- /dev/null
+++ b/python/altgraph/setup.cfg
@@ -0,0 +1,36 @@
+[metadata]
+name = altgraph
+version = 0.12
+description = Python graph (network) package
+long_description_file = 
+	README.txt
+	doc/changelog.rst
+author = Ronald Oussoren
+author_email = ronaldoussoren@mac.com
+maintainer = Ronald Oussoren
+maintainer_email = ronaldoussoren@mac.com
+url = http://packages.python.org/altgraph
+download_url = http://pypi.python.org/pypi/altgraph
+license = MIT
+classifiers = 
+	Intended Audience :: Developers
+	License :: OSI Approved :: MIT License
+	Programming Language :: Python
+	Programming Language :: Python :: 2
+	Programming Language :: Python :: 2.7
+	Programming Language :: Python :: 3
+	Programming Language :: Python :: 3.3
+	Programming Language :: Python :: 3.4
+	Topic :: Software Development :: Libraries :: Python Modules
+	Topic :: Scientific/Engineering :: Mathematics
+	Topic :: Scientific/Engineering :: Visualization
+keywords = graph
+platforms = any
+packages = altgraph
+zip-safe = 1
+
+[egg_info]
+tag_build = 
+tag_date = 0
+tag_svn_revision = 0
+
diff --git a/python/altgraph/setup.py b/python/altgraph/setup.py
new file mode 100644
index 000000000..a1a4cb6eb
--- /dev/null
+++ b/python/altgraph/setup.py
@@ -0,0 +1,867 @@
+"""
+Shared setup file for simple python packages. Uses a setup.cfg that
+is the same as the distutils2 project, unless noted otherwise.
+
+It exists for two reasons:
+1) This makes it easier to reuse setup.py code between my own
+   projects
+
+2) Easier migration to distutils2 when that catches on.
+
+Additional functionality:
+
+* Section metadata:
+    requires-test:  Same as 'tests_require' option for setuptools.
+
+"""
+
+import sys
+import os
+import re
+import platform
+from fnmatch import fnmatch
+import os
+import sys
+import time
+import tempfile
+import tarfile
+try:
+    import urllib.request as urllib
+except ImportError:
+    import urllib
+from distutils import log
+try:
+    from hashlib import md5
+
+except ImportError:
+    from md5 import md5
+
+if sys.version_info[0] == 2:
+    from ConfigParser import RawConfigParser, NoOptionError, NoSectionError
+else:
+    from configparser import RawConfigParser, NoOptionError, NoSectionError
+
+ROOTDIR = os.path.dirname(os.path.abspath(__file__))
+
+
+#
+#
+#
+# Parsing the setup.cfg and converting it to something that can be
+# used by setuptools.setup()
+#
+#
+#
+
+def eval_marker(value):
+    """
+    Evaluate an distutils2 environment marker.
+
+    This code is unsafe when used with hostile setup.cfg files,
+    but that's not a problem for our own files.
+    """
+    value = value.strip()
+
+    class M:
+        def __init__(self, **kwds):
+            for k, v in kwds.items():
+                setattr(self, k, v)
+
+    variables = {
+        'python_version': '%d.%d'%(sys.version_info[0], sys.version_info[1]),
+        'python_full_version': sys.version.split()[0],
+        'os': M(
+            name=os.name,
+        ),
+        'sys': M(
+            platform=sys.platform,
+        ),
+        'platform': M(
+            version=platform.version(),
+            machine=platform.machine(),
+        ),
+    }
+
+    return bool(eval(value, variables, variables))
+
+
+    return True
+
+def _opt_value(cfg, into, section, key, transform = None):
+    try:
+        v = cfg.get(section, key)
+        if transform != _as_lines and ';' in v:
+            v, marker = v.rsplit(';', 1)
+            if not eval_marker(marker):
+                return
+
+            v = v.strip()
+
+        if v:
+            if transform:
+                into[key] = transform(v.strip())
+            else:
+                into[key] = v.strip()
+
+    except (NoOptionError, NoSectionError):
+        pass
+
+def _as_bool(value):
+    if value.lower() in ('y', 'yes', 'on'):
+        return True
+    elif value.lower() in ('n', 'no', 'off'):
+        return False
+    elif value.isdigit():
+        return bool(int(value))
+    else:
+        raise ValueError(value)
+
+def _as_list(value):
+    return value.split()
+
+def _as_lines(value):
+    result = []
+    for v in value.splitlines():
+        if ';' in v:
+            v, marker = v.rsplit(';', 1)
+            if not eval_marker(marker):
+                continue
+
+            v = v.strip()
+            if v:
+                result.append(v)
+        else:
+            result.append(v)
+    return result
+
+def _map_requirement(value):
+    m = re.search(r'(\S+)\s*(?:\((.*)\))?', value)
+    name = m.group(1)
+    version = m.group(2)
+
+    if version is None:
+        return name
+
+    else:
+        mapped = []
+        for v in version.split(','):
+            v = v.strip()
+            if v[0].isdigit():
+                # Checks for a specific version prefix
+                m = v.rsplit('.', 1)
+                mapped.append('>=%s,<%s.%s'%(
+                    v, m[0], int(m[1])+1))
+
+            else:
+                mapped.append(v)
+        return '%s %s'%(name, ','.join(mapped),)
+
+def _as_requires(value):
+    requires = []
+    for req in value.splitlines():
+        if ';' in req:
+            req, marker = v.rsplit(';', 1)
+            if not eval_marker(marker):
+                continue
+            req = req.strip()
+
+        if not req:
+            continue
+        requires.append(_map_requirement(req))
+    return requires
+
+def parse_setup_cfg():
+    cfg = RawConfigParser()
+    r = cfg.read([os.path.join(ROOTDIR, 'setup.cfg')])
+    if len(r) != 1:
+        print("Cannot read 'setup.cfg'")
+        sys.exit(1)
+
+    metadata = dict(
+            name        = cfg.get('metadata', 'name'),
+            version     = cfg.get('metadata', 'version'),
+            description = cfg.get('metadata', 'description'),
+    )
+
+    _opt_value(cfg, metadata, 'metadata', 'license')
+    _opt_value(cfg, metadata, 'metadata', 'maintainer')
+    _opt_value(cfg, metadata, 'metadata', 'maintainer_email')
+    _opt_value(cfg, metadata, 'metadata', 'author')
+    _opt_value(cfg, metadata, 'metadata', 'author_email')
+    _opt_value(cfg, metadata, 'metadata', 'url')
+    _opt_value(cfg, metadata, 'metadata', 'download_url')
+    _opt_value(cfg, metadata, 'metadata', 'classifiers', _as_lines)
+    _opt_value(cfg, metadata, 'metadata', 'platforms', _as_list)
+    _opt_value(cfg, metadata, 'metadata', 'packages', _as_list)
+    _opt_value(cfg, metadata, 'metadata', 'keywords', _as_list)
+
+    try:
+        v = cfg.get('metadata', 'requires-dist')
+
+    except (NoOptionError, NoSectionError):
+        pass
+
+    else:
+        requires = _as_requires(v)
+        if requires:
+            metadata['install_requires'] = requires
+
+    try:
+        v = cfg.get('metadata', 'requires-test')
+
+    except (NoOptionError, NoSectionError):
+        pass
+
+    else:
+        requires = _as_requires(v)
+        if requires:
+            metadata['tests_require'] = requires
+
+
+    try:
+        v = cfg.get('metadata', 'long_description_file')
+    except (NoOptionError, NoSectionError):
+        pass
+
+    else:
+        parts = []
+        for nm in v.split():
+            fp = open(nm, 'rU')
+            parts.append(fp.read())
+            fp.close()
+
+        metadata['long_description'] = '\n\n'.join(parts)
+
+
+    try:
+        v = cfg.get('metadata', 'zip-safe')
+    except (NoOptionError, NoSectionError):
+        pass
+
+    else:
+        metadata['zip_safe'] = _as_bool(v)
+
+    try:
+        v = cfg.get('metadata', 'console_scripts')
+    except (NoOptionError, NoSectionError):
+        pass
+
+    else:
+        if 'entry_points' not in metadata:
+            metadata['entry_points'] = {}
+
+        metadata['entry_points']['console_scripts'] = v.splitlines()
+
+    if sys.version_info[:2] <= (2,6):
+        try:
+            metadata['tests_require'] += ", unittest2"
+        except KeyError:
+            metadata['tests_require'] = "unittest2"
+
+    return metadata
+
+
+#
+#
+#
+# Bootstrapping setuptools/distribute, based on
+# a heavily modified version of distribute_setup.py
+#
+#
+#
+
+
+SETUPTOOLS_PACKAGE='setuptools'
+
+
+try:
+    import subprocess
+
+    def _python_cmd(*args):
+        args = (sys.executable,) + args
+        return subprocess.call(args) == 0
+
+except ImportError:
+    def _python_cmd(*args):
+        args = (sys.executable,) + args
+        new_args = []
+        for a in args:
+            new_args.append(a.replace("'", "'\"'\"'"))
+        os.system(' '.join(new_args)) == 0
+
+
+try:
+    import json
+
+    def get_pypi_src_download(package):
+        url = 'https://pypi.python.org/pypi/%s/json'%(package,)
+        fp = urllib.urlopen(url)
+        try:
+            try:
+                data = fp.read()
+
+            finally:
+                fp.close()
+        except urllib.error:
+            raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+        pkgdata = json.loads(data.decode('utf-8'))
+        if 'urls' not in pkgdata:
+            raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+        for info in pkgdata['urls']:
+            if info['packagetype'] == 'sdist' and info['url'].endswith('tar.gz'):
+                return (info.get('md5_digest'), info['url'])
+
+        raise RuntimeError("Cannot determine downlink link for %s"%(package,))
+
+except ImportError:
+    # Python 2.5 compatibility, no JSON in stdlib but luckily JSON syntax is
+    # simular enough to Python's syntax to be able to abuse the Python compiler
+
+    import _ast as ast
+
+    def get_pypi_src_download(package):
+        url = 'https://pypi.python.org/pypi/%s/json'%(package,)
+        fp = urllib.urlopen(url)
+        try:
+            try:
+                data = fp.read()
+
+            finally:
+                fp.close()
+        except urllib.error:
+            raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+
+        a = compile(data, '-', 'eval', ast.PyCF_ONLY_AST)
+        if not isinstance(a, ast.Expression):
+            raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+        a = a.body
+        if not isinstance(a, ast.Dict):
+            raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+        for k, v in zip(a.keys, a.values):
+            if not isinstance(k, ast.Str):
+                raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+            k = k.s
+            if k == 'urls':
+                a = v
+                break
+        else:
+            raise RuntimeError("PyPI JSON for %s doesn't contain URLs section"%(package,))
+
+        if not isinstance(a, ast.List):
+            raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+        for info in v.elts:
+            if not isinstance(info, ast.Dict):
+                raise RuntimeError("Cannot determine download link for %s"%(package,))
+            url = None
+            packagetype = None
+            chksum = None
+
+            for k, v in zip(info.keys, info.values):
+                if not isinstance(k, ast.Str):
+                    raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+                if k.s == 'url':
+                    if not isinstance(v, ast.Str):
+                        raise RuntimeError("Cannot determine download link for %s"%(package,))
+                    url = v.s
+
+                elif k.s == 'packagetype':
+                    if not isinstance(v, ast.Str):
+                        raise RuntimeError("Cannot determine download link for %s"%(package,))
+                    packagetype = v.s
+
+                elif k.s == 'md5_digest':
+                    if not isinstance(v, ast.Str):
+                        raise RuntimeError("Cannot determine download link for %s"%(package,))
+                    chksum = v.s
+
+            if url is not None and packagetype == 'sdist' and url.endswith('.tar.gz'):
+                return (chksum, url)
+
+        raise RuntimeError("Cannot determine download link for %s"%(package,))
+
+def _build_egg(egg, tarball, to_dir):
+    # extracting the tarball
+    tmpdir = tempfile.mkdtemp()
+    log.warn('Extracting in %s', tmpdir)
+    old_wd = os.getcwd()
+    try:
+        os.chdir(tmpdir)
+        tar = tarfile.open(tarball)
+        _extractall(tar)
+        tar.close()
+
+        # going in the directory
+        subdir = os.path.join(tmpdir, os.listdir(tmpdir)[0])
+        os.chdir(subdir)
+        log.warn('Now working in %s', subdir)
+
+        # building an egg
+        log.warn('Building a %s egg in %s', egg, to_dir)
+        _python_cmd('setup.py', '-q', 'bdist_egg', '--dist-dir', to_dir)
+
+    finally:
+        os.chdir(old_wd)
+    # returning the result
+    log.warn(egg)
+    if not os.path.exists(egg):
+        raise IOError('Could not build the egg.')
+
+
+def _do_download(to_dir, packagename=SETUPTOOLS_PACKAGE):
+    tarball = download_setuptools(packagename, to_dir)
+    version = tarball.split('-')[-1][:-7]
+    egg = os.path.join(to_dir, '%s-%s-py%d.%d.egg'
+                       % (packagename, version, sys.version_info[0], sys.version_info[1]))
+    if not os.path.exists(egg):
+        _build_egg(egg, tarball, to_dir)
+    sys.path.insert(0, egg)
+    import setuptools
+    setuptools.bootstrap_install_from = egg
+
+
+def use_setuptools():
+    # making sure we use the absolute path
+    return _do_download(os.path.abspath(os.curdir))
+
+def download_setuptools(packagename, to_dir):
+    # making sure we use the absolute path
+    to_dir = os.path.abspath(to_dir)
+    try:
+        from urllib.request import urlopen
+    except ImportError:
+        from urllib2 import urlopen
+
+    chksum, url = get_pypi_src_download(packagename)
+    tgz_name = os.path.basename(url)
+    saveto = os.path.join(to_dir, tgz_name)
+
+    src = dst = None
+    if not os.path.exists(saveto):  # Avoid repeated downloads
+        try:
+            log.warn("Downloading %s", url)
+            src = urlopen(url)
+            # Read/write all in one block, so we don't create a corrupt file
+            # if the download is interrupted.
+            data = src.read()
+
+            if chksum is not None:
+                data_sum = md5(data).hexdigest()
+                if data_sum != chksum:
+                    raise RuntimeError("Downloading %s failed: corrupt checksum"%(url,))
+
+
+            dst = open(saveto, "wb")
+            dst.write(data)
+        finally:
+            if src:
+                src.close()
+            if dst:
+                dst.close()
+    return os.path.realpath(saveto)
+
+
+
+def _extractall(self, path=".", members=None):
+    """Extract all members from the archive to the current working
+       directory and set owner, modification time and permissions on
+       directories afterwards. `path' specifies a different directory
+       to extract to. `members' is optional and must be a subset of the
+       list returned by getmembers().
+    """
+    import copy
+    import operator
+    from tarfile import ExtractError
+    directories = []
+
+    if members is None:
+        members = self
+
+    for tarinfo in members:
+        if tarinfo.isdir():
+            # Extract directories with a safe mode.
+            directories.append(tarinfo)
+            tarinfo = copy.copy(tarinfo)
+            tarinfo.mode = 448 # decimal for oct 0700
+        self.extract(tarinfo, path)
+
+    # Reverse sort directories.
+    if sys.version_info < (2, 4):
+        def sorter(dir1, dir2):
+            return cmp(dir1.name, dir2.name)
+        directories.sort(sorter)
+        directories.reverse()
+    else:
+        directories.sort(key=operator.attrgetter('name'), reverse=True)
+
+    # Set correct owner, mtime and filemode on directories.
+    for tarinfo in directories:
+        dirpath = os.path.join(path, tarinfo.name)
+        try:
+            self.chown(tarinfo, dirpath)
+            self.utime(tarinfo, dirpath)
+            self.chmod(tarinfo, dirpath)
+        except ExtractError:
+            e = sys.exc_info()[1]
+            if self.errorlevel > 1:
+                raise
+            else:
+                self._dbg(1, "tarfile: %s" % e)
+
+
+#
+#
+#
+# Definitions of custom commands
+#
+#
+#
+
+try:
+    import setuptools
+
+except ImportError:
+    use_setuptools()
+
+from setuptools import setup
+
+try:
+    from distutils.core import PyPIRCCommand
+except ImportError:
+    PyPIRCCommand = None # Ancient python version
+
+from distutils.core import Command
+from distutils.errors  import DistutilsError
+from distutils import log
+
+if PyPIRCCommand is None:
+    class upload_docs (Command):
+        description = "upload sphinx documentation"
+        user_options = []
+
+        def initialize_options(self):
+            pass
+
+        def finalize_options(self):
+            pass
+
+        def run(self):
+            raise DistutilsError("not supported on this version of python")
+
+else:
+    class upload_docs (PyPIRCCommand):
+        description = "upload sphinx documentation"
+        user_options = PyPIRCCommand.user_options
+
+        def initialize_options(self):
+            PyPIRCCommand.initialize_options(self)
+            self.username = ''
+            self.password = ''
+
+
+        def finalize_options(self):
+            PyPIRCCommand.finalize_options(self)
+            config = self._read_pypirc()
+            if config != {}:
+                self.username = config['username']
+                self.password = config['password']
+
+
+        def run(self):
+            import subprocess
+            import shutil
+            import zipfile
+            import os
+            import urllib
+            import StringIO
+            from base64 import standard_b64encode
+            import httplib
+            import urlparse
+
+            # Extract the package name from distutils metadata
+            meta = self.distribution.metadata
+            name = meta.get_name()
+
+            # Run sphinx
+            if os.path.exists('doc/_build'):
+                shutil.rmtree('doc/_build')
+            os.mkdir('doc/_build')
+
+            p = subprocess.Popen(['make', 'html'],
+                cwd='doc')
+            exit = p.wait()
+            if exit != 0:
+                raise DistutilsError("sphinx-build failed")
+
+            # Collect sphinx output
+            if not os.path.exists('dist'):
+                os.mkdir('dist')
+            zf = zipfile.ZipFile('dist/%s-docs.zip'%(name,), 'w',
+                    compression=zipfile.ZIP_DEFLATED)
+
+            for toplevel, dirs, files in os.walk('doc/_build/html'):
+                for fn in files:
+                    fullname = os.path.join(toplevel, fn)
+                    relname = os.path.relpath(fullname, 'doc/_build/html')
+
+                    print ("%s -> %s"%(fullname, relname))
+
+                    zf.write(fullname, relname)
+
+            zf.close()
+
+            # Upload the results, this code is based on the distutils
+            # 'upload' command.
+            content = open('dist/%s-docs.zip'%(name,), 'rb').read()
+
+            data = {
+                ':action': 'doc_upload',
+                'name': name,
+                'content': ('%s-docs.zip'%(name,), content),
+            }
+            auth = "Basic " + standard_b64encode(self.username + ":" +
+                 self.password)
+
+
+            boundary = '--------------GHSKFJDLGDS7543FJKLFHRE75642756743254'
+            sep_boundary = '\n--' + boundary
+            end_boundary = sep_boundary + '--'
+            body = StringIO.StringIO()
+            for key, value in data.items():
+                if not isinstance(value, list):
+                    value = [value]
+
+                for value in value:
+                    if isinstance(value, tuple):
+                        fn = ';filename="%s"'%(value[0])
+                        value = value[1]
+                    else:
+                        fn = ''
+
+                    body.write(sep_boundary)
+                    body.write('\nContent-Disposition: form-data; name="%s"'%key)
+                    body.write(fn)
+                    body.write("\n\n")
+                    body.write(value)
+
+            body.write(end_boundary)
+            body.write('\n')
+            body = body.getvalue()
+
+            self.announce("Uploading documentation to %s"%(self.repository,), log.INFO)
+
+            schema, netloc, url, params, query, fragments = \
+                    urlparse.urlparse(self.repository)
+
+
+            if schema == 'http':
+                http = httplib.HTTPConnection(netloc)
+            elif schema == 'https':
+                http = httplib.HTTPSConnection(netloc)
+            else:
+                raise AssertionError("unsupported schema "+schema)
+
+            data = ''
+            loglevel = log.INFO
+            try:
+                http.connect()
+                http.putrequest("POST", url)
+                http.putheader('Content-type',
+                    'multipart/form-data; boundary=%s'%boundary)
+                http.putheader('Content-length', str(len(body)))
+                http.putheader('Authorization', auth)
+                http.endheaders()
+                http.send(body)
+            except socket.error:
+                e = socket.exc_info()[1]
+                self.announce(str(e), log.ERROR)
+                return
+
+            r = http.getresponse()
+            if r.status in (200, 301):
+                self.announce('Upload succeeded (%s): %s' % (r.status, r.reason),
+                    log.INFO)
+            else:
+                self.announce('Upload failed (%s): %s' % (r.status, r.reason),
+                    log.ERROR)
+
+                print ('-'*75)
+                print (r.read())
+                print ('-'*75)
+
+
+def recursiveGlob(root, pathPattern):
+    """
+    Recursively look for files matching 'pathPattern'. Return a list
+    of matching files/directories.
+    """
+    result = []
+
+    for rootpath, dirnames, filenames in os.walk(root):
+        for fn in filenames:
+            if fnmatch(fn, pathPattern):
+                result.append(os.path.join(rootpath, fn))
+    return result
+
+
+def importExternalTestCases(unittest,
+        pathPattern="test_*.py", root=".", package=None):
+    """
+    Import all unittests in the PyObjC tree starting at 'root'
+    """
+
+    testFiles = recursiveGlob(root, pathPattern)
+    testModules = map(lambda x:x[len(root)+1:-3].replace('/', '.'), testFiles)
+    if package is not None:
+        testModules = [(package + '.' + m) for m in testModules]
+
+    suites = []
+
+    for modName in testModules:
+        try:
+            module = __import__(modName)
+        except ImportError:
+            print("SKIP %s: %s"%(modName, sys.exc_info()[1]))
+            continue
+
+        if '.' in modName:
+            for elem in modName.split('.')[1:]:
+                module = getattr(module, elem)
+
+        s = unittest.defaultTestLoader.loadTestsFromModule(module)
+        suites.append(s)
+
+    return unittest.TestSuite(suites)
+
+
+
+class test (Command):
+    description = "run test suite"
+    user_options = [
+        ('verbosity=', None, "print what tests are run"),
+    ]
+
+    def initialize_options(self):
+        self.verbosity='1'
+
+    def finalize_options(self):
+        if isinstance(self.verbosity, str):
+            self.verbosity = int(self.verbosity)
+
+
+    def cleanup_environment(self):
+        ei_cmd = self.get_finalized_command('egg_info')
+        egg_name = ei_cmd.egg_name.replace('-', '_')
+
+        to_remove =  []
+        for dirname in sys.path:
+            bn = os.path.basename(dirname)
+            if bn.startswith(egg_name + "-"):
+                to_remove.append(dirname)
+
+        for dirname in to_remove:
+            log.info("removing installed %r from sys.path before testing"%(
+                dirname,))
+            sys.path.remove(dirname)
+
+    def add_project_to_sys_path(self):
+        from pkg_resources import normalize_path, add_activation_listener
+        from pkg_resources import working_set, require
+
+        self.reinitialize_command('egg_info')
+        self.run_command('egg_info')
+        self.reinitialize_command('build_ext', inplace=1)
+        self.run_command('build_ext')
+
+
+        # Check if this distribution is already on sys.path
+        # and remove that version, this ensures that the right
+        # copy of the package gets tested.
+
+        self.__old_path = sys.path[:]
+        self.__old_modules = sys.modules.copy()
+
+
+        ei_cmd = self.get_finalized_command('egg_info')
+        sys.path.insert(0, normalize_path(ei_cmd.egg_base))
+        sys.path.insert(1, os.path.dirname(__file__))
+
+        # Strip the namespace packages defined in this distribution
+        # from sys.modules, needed to reset the search path for
+        # those modules.
+
+        nspkgs = getattr(self.distribution, 'namespace_packages')
+        if nspkgs is not None:
+            for nm in nspkgs:
+                del sys.modules[nm]
+
+        # Reset pkg_resources state:
+        add_activation_listener(lambda dist: dist.activate())
+        working_set.__init__()
+        require('%s==%s'%(ei_cmd.egg_name, ei_cmd.egg_version))
+
+    def remove_from_sys_path(self):
+        from pkg_resources import working_set
+        sys.path[:] = self.__old_path
+        sys.modules.clear()
+        sys.modules.update(self.__old_modules)
+        working_set.__init__()
+
+
+    def run(self):
+        import unittest
+
+        # Ensure that build directory is on sys.path (py3k)
+
+        self.cleanup_environment()
+        self.add_project_to_sys_path()
+
+        try:
+            meta = self.distribution.metadata
+            name = meta.get_name()
+            test_pkg = name + "_tests"
+            suite = importExternalTestCases(unittest,
+                    "test_*.py", test_pkg, test_pkg)
+
+            runner = unittest.TextTestRunner(verbosity=self.verbosity)
+            result = runner.run(suite)
+
+            # Print out summary. This is a structured format that
+            # should make it easy to use this information in scripts.
+            summary = dict(
+                count=result.testsRun,
+                fails=len(result.failures),
+                errors=len(result.errors),
+                xfails=len(getattr(result, 'expectedFailures', [])),
+                xpass=len(getattr(result, 'expectedSuccesses', [])),
+                skip=len(getattr(result, 'skipped', [])),
+            )
+            print("SUMMARY: %s"%(summary,))
+
+        finally:
+            self.remove_from_sys_path()
+
+#
+#
+#
+#  And finally run the setuptools main entry point.
+#
+#
+#
+
+metadata = parse_setup_cfg()
+
+setup(
+    cmdclass=dict(
+        upload_docs=upload_docs,
+        test=test,
+    ),
+    **metadata
+)