颜色本身并没有错.您只是想为每对最有可能是边缘着色的节点分配一种颜色.在这种情况下，您需要将 node_color 关键字替换为 edge_color.

Colors itself are not wrong. You're just trying to assign a color to each couple of nodes which is most likely to be coloring of edges. In that case you need to replace node_color keyword with edge_color.

G = nx.from_pandas_edgelist(df, 'User', 'Val')
colors = df[["User", "Color"]].drop_duplicates()["Color"]

plt.figure(figsize=(3, 3))
pos = nx.spring_layout(G)
nx.draw(G, edge_color = colors, pos = pos)
net = nx.draw_networkx_labels(G, pos = pos)
plt.show()

这是我正在使用的 df:

t = '''
User        Val     Color   
92  Laura   NaN      red
100 Laura   John    red
148 Laura   Mike    red
168 Laura   Mirk    red
293 Laura   Sara     red
313 Laura   Sim  red
440 Martyn  Pierre   orange
440 Martyn  Hugh    orange
440 Martyn  Lauren  orange
440 Martyn  Sim     orange'''
from io import StringIO
df = pd.read_csv(StringIO(t), sep='\s+')

输出