Python 3 graph (network) package

 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.
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 altgraph includes some additional usage of Python 2.6+ features and
 enhancements related to modulegraph and macholib.
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 This package provides the Python 3.x module.