step1: 导入networkx复杂网络库、matplotlib.pyplot、pandas

import networkx as nximport matplotlib.pyplot as pltimport pandas as pd

step2: 绘制BA无标度网络

G=nx.barabasi_albert_graph(1000,1) #generate BA networkpos=nx.spring_layout(G) #set layoutnodecolor=G.degree() #度数越大，节点越大，连接边颜色越深nodecolor2=pd.DataFrame(nodecolor) #转化称矩阵形式nodecolor3=nodecolor2.iloc[:,1] #索引第二列edgecolor=range(G.number_of_edges()) #设置边权颜色nx.draw(G, pos, with_labels=False,node_size=nodecolor3*6,        node_color=nodecolor3*5,edge_color=edgecolor,        node_cmap=plt.cm.Blues        ) #nx.draw()函数绘图，G表示对象， pos表示布局        #with_labels设置标签，节点和边的大小和颜色

step3: 保存作图

plt.savefig("C:\\Users\\mengxueyu\\Desktop\\无标度网络2.jpg",dpi=1000)plt.show()