How to seed graph generator in python-igraph?

问题

Is there any way to seed the following Watts-Strogatz graph generated using python-igraph, so that each time I run the script I get the same realization of SW graph ?

import igraph
graph = igraph.Graph.Watts_Strogatz(1, N, nei, p)

where N is the number of nodes, nei the number of connected neighbors, and p the rewiring probability.

回答1:

igraph uses the built-in RNG of Python so you can seed that:

In [1]: import random
In [2]: random.seed(1234)
In [3]: g=Graph.Watts_Strogatz(1, 100, 2, 0.25)
In [4]: random.seed(1234)
In [5]: g2=Graph.Watts_Strogatz(1, 100, 2, 0.25)
In [6]: g.get_edgelist() == g2.get_edgelist()
Out[6]:  True

来源：https://stackoverflow.com/questions/25718008/how-to-seed-graph-generator-in-python-igraph