未能从边缘列表networkx

Question

计算最短路径看，似乎不和我一起工作：

import networkx as nx 
G = nx.read_edgelist(filename, delimiter=",", create_using=nx.DiGraph(), nodetype=int) 
print G 
print nx.shortest_path(G, 1, 5) 

我读的文件是：

1,2 
2,3 
3,4 
4,5 

没有输出。

Answer 1

您的代码适用于我。

import networkx as nx 
import matplotlib.pyplot as plt 

filename = 'test.txt' 
G = nx.read_edgelist(filename, delimiter=",", create_using=nx.DiGraph(), nodetype=int) 

nx.draw_networkx(G, with_labels=True) 
plt.axis('off') 
plt.show() 

print(type(G), G) 
# (<class 'networkx.classes.digraph.DiGraph'>, <networkx.classes.digraph.DiGraph object at 0x10e29c150>) 

print(nx.shortest_path(G, 1, 5)) 
#[1, 2, 3, 4, 5] 

产生，