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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
def attrmatch(attributes, **kwargs):
"""Determine whether the given set of task attributes matches. The
conditions are given as keyword arguments, where each keyword names an
attribute. The keyword value can be a literal, a set, or a callable. A
literal must match the attribute exactly. Given a set, the attribute value
must be in the set. A callable is called with the attribute value. If an
attribute is specified as a keyword argument but not present in the
attributes, the result is False."""
for kwkey, kwval in kwargs.iteritems():
if kwkey not in attributes:
return False
attval = attributes[kwkey]
if isinstance(kwval, set):
if attval not in kwval:
return False
elif callable(kwval):
if not kwval(attval):
return False
elif kwval != attributes[kwkey]:
return False
return True
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