使用networkx和matplotlib为图形边添加工具提示(Python)

import networkx as nx
import matplotlib.pyplot as plt

G = nx.Graph()

G.add_node(1)
G.add_node(2)
G.add_edge(1, 2)

pos = nx.spring_layout(G)  # 定义节点的布局
fig, ax = plt.subplots()

nx.draw_networkx_nodes(G, pos, ax=ax)
nx.draw_networkx_edges(G, pos, ax=ax)

edge_labels = {(1, 2): 'Edge 1-2'}  # 边的标签字典
nx.draw_networkx_edge_labels(G, pos, edge_labels=edge_labels, ax=ax)

plt.show()