python3-pygraphviz 1.7-3build2 (s390x binary) in ubuntu lunar

 Pygraphviz is a Python interface to the Graphviz graph layout and
 visualization package.
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 With Pygraphviz you can create, edit, read, write, and draw graphs using
 Python to access the Graphviz graph data structure and layout algorithms.
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 This package contains the Python 3 version of python-pygraphviz.