读取网络的邻接矩阵，将其保存为连边形式

# -*- coding: utf-8 -*-
"""
Created on Tue Dec  1 21:23:51 2020

@author: chend
"""
#读取邻接矩阵，将其保存为连边形式（文件格式为.txt）
import numpy as np

A = np.loadtxt('./matrix.txt')
outf = open("edgelist.txt", "w")
for i in range(len(A)):
    for j in range(len(A)):
        if A[i][j] == 1:
            outf.write(str(i+1)+" ")
            outf.write(str(j+1)+"
")
            
outf.close()

txt文件结果展示：