有向きコンフィグレーションモデル

import networkx as nx
import random as ran


#in1=[3,3,3,3,3]
#out1=[3,3,3,3,3]

def f(x):
        return int(ran.random()**(-1.0/3.0))

in1=map(f,range(10000));

out1=[]
out1[:]=in1[:];

G=nx.directed_configuration_model(in1,out1)



for i in G.edges():
        print i[0],i[1];