解析NetworkX图中的边缘

Question

我试图在不使用get_edge_attributes()函数的情况下从图形中获取具有特定属性的边.我需要一种更灵活的方式.我可以得到节点属性,但因为我在python边缘是新的似乎很难

G = nx.read_graphml("test.graphml")

for n in G:
  print "%s\t%s" %(n, G.node[n].get(attr))

for (s,d) in G:       # and here is my problem
  print "%s->%s\t%s" %(s, d, G.edge[s][d].get(attr))

Answer 1

您可以使用G.edges()或G.edges_iter()方法遍历所有图形边.

In [1]: import networkx as nx

In [2]: G = nx.Graph()

In [3]: G.add_edge(1,2,weight=7)

In [4]: G.add_edge(2,3,weight=10)

In [5]: for u,v,a in G.edges(data=True):
    print u,v,a
   ...:     
1 2 {'weight': 7}
2 3 {'weight': 10}