Hi!
Has there recently been a change in the subgraph method?
The following code currently break (which did not break before).
Thanks,
Anne
sage: DynkinDiagram(['C',3,1]).subgraph([1])
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/Applications/sage-4.4/devel/sage-combinat/sage/combinat/<ipython console> in
<module>()
/Applications/sage/local/lib/python2.6/site-packages/sage/graphs/generic_graph.pyc
in subgraph(self, vertices, edges, inplace, vertex_property, edge_property,
algorithm)
6234 return self._subgraph_by_deleting(vertices=vertices,
edges=edges,
6235 inplace=inplace,
-> 6236
edge_property=edge_property)
6237 else:
6238 return self._subgraph_by_adding(vertices=vertices,
edges=edges,
/Applications/sage/local/lib/python2.6/site-packages/sage/graphs/generic_graph.pyc
in _subgraph_by_deleting(self, vertices, edges, inplace, edge_property)
6491 G = self
6492 else:
-> 6493 G = self.copy()
6494 G.name("Subgraph of (%s)"%self.name())
6495
/Applications/sage/local/lib/python2.6/site-packages/sage/graphs/generic_graph.pyc
in __copy__(self, implementation, sparse)
488 sparse = (not isinstance(self._backend, DenseGraphBackend))
489 from copy import copy
--> 490 G = self.__class__(self, name=self.name(), pos=copy(self._pos),
boundary=copy(self._boundary), implementation=implementation, sparse=sparse)
491
492 attributes_to_copy = ('_assoc', '_embedding')
TypeError: __init__() got an unexpected keyword argument 'implementation'
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