从networkx中的graphframe打印标签

import networkx as nx
from graphframe import GraphFrame

G = nx.DiGraph()

G.add_node(1, label='Node 1')
G.add_node(2, label='Node 2')
G.add_edge(1, 2)

gf = GraphFrame.from_networkx(G)

node_labels = gf.vertices.select('label').collect()
for label in node_labels:
    print(label['label'])