python3-altgraph 0.16.1~repack0-3 (amd64 binary) in ubuntu focal

 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.
 .
 This package provides the Python 3.x module.