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asked 3 years ago

bobby.mir gravatar image

Digraphs database

I'm interested in the list of digraphs without muliedges and I used the following command, but it does not give me back any output.

for G in digraphs(3,lambda G: G.allow_multiple_edges(False)):
     print(G.show())

I'm wondering why there is no output and how I can fix it.