Can someone explain why this is coming up now? From what I see, this looks like an old project (2014). I'd love to understand if there is something fresh to be aware of.
https://networkx.github.io/ http://igraph.org/python/ https://graph-tool.skewed.de/
EDIT: except, looks like they don't support python 3 yet. That's a dealbreaker, unfortunately. All my code is in python 3.6.