Setting stable RandomState does not work

[williamfzc]

Hello everyone :)

I am trying to configure a fixed random seed so that my program can consistently produce the same results for the same data. According to the API, if a fixed random seed is provided, the program should theoretically meet my requirements, but it does not in practice.

I found that in:

python-louvain/community/community_louvain.py

Line 483 in def9179

for node in __randomize(graph.nodes(), random_state):

the result of graph.nodes() itself is random. In this case, setting a fixed random seed is meaningless; it is still completely random and cannot be controlled.

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So, to reach my goal, I have to edit the lib code to remove the random part:

for node in sorted(graph.nodes()):

the result will be almost stable.