优雅地访问networkx中的边缘属性 [英] Elegant access to edge attributes in networkx

问题描述

是否确实有必要在networkx中访问下面的笨拙的第三种形式的边缘属性，并且不需要更精巧的前两种形式的变体呢?

Is it indeed the case that to access edge attributes in networkx the awkward third form below is necessary and no variation of the more svelte first two forms will do?

import networkx as nx

G = nx.Graph()
G.add_edge(1, 2, weight=4.7 )
G.add_edge(3, 4, weight=5.8 )

# for edge in G.edges():
#     print edge['weight']
# 
# for edge in G.edges():
#     print G[edge]['weight']

for edge in G.edges():
    print G.edge[edge[0]][edge[1]]['weight']

推荐答案

使用 data=True :

import networkx as nx

G = nx.Graph()
G.add_edge(1, 2, weight=4.7)
G.add_edge(3, 4, weight=5.8)

for node1, node2, data in G.edges(data=True):
    print(data['weight'])

打印

4.7
5.8

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