如何基于networkx绘制边宽可变的网络图有向图？

import networkx as nx
import matplotlib.pyplot as plt

G = nx.DiGraph()

G.add_node("Node 1")
G.add_node("Node 2")
G.add_node("Node 3")

G.add_edge("Node 1", "Node 2", weight=2)
G.add_edge("Node 1", "Node 3", weight=5)
G.add_edge("Node 2", "Node 3", weight=3)

weights = [G[u][v]['weight'] for u, v in G.edges()]

pos = nx.spring_layout(G)  # 定义节点的布局
nx.draw_networkx_nodes(G, pos)  # 绘制节点
nx.draw_networkx_labels(G, pos)  # 绘制节点标签
nx.draw_networkx_edges(G, pos, width=weights)  # 绘制边，并设置边的宽度
plt.axis('off')  # 关闭坐标轴
plt.show()  # 显示图形