如何在Python中以新的pandas数据帧的形式从pandas dataframe中获取networkx图的分支？

import pandas as pd
import networkx as nx

G = nx.Graph()

# 假设dataframe包含两列：'source'和'target'，分别表示边的起始节点和目标节点
edges_df = pd.DataFrame({'source': ['A', 'B', 'C'], 'target': ['B', 'C', 'D']})

for _, edge in edges_df.iterrows():
    source = edge['source']
    target = edge['target']
    G.add_edge(source, target)

branches = list(nx.connected_components(G))