如何在打印Networkx图的边属性时排序边的顺序

import networkx as nx

# 创建一个有向图
G = nx.DiGraph()

# 添加边和属性
G.add_edge('A', 'B', weight=3)
G.add_edge('B', 'C', weight=2)
G.add_edge('C', 'D', weight=1)

# 获取边属性字典
edge_attrs = nx.get_edge_attributes(G, 'weight')

# 将边属性字典转换为列表，并按照权重进行排序
sorted_attrs = sorted(edge_attrs.items(), key=lambda x: x[1])

# 遍历排序后的边属性列表，并打印边的属性
for edge, weight in sorted_attrs:
    print(f"Edge: {edge}, Weight: {weight}")

Edge: C -> D, Weight: 1
Edge: B -> C, Weight: 2
Edge: A -> B, Weight: 3