python networkx-波斯语字符问题

为什么此图形的输出不显示正确的字符串

import networkx as nx
import matplotlib.pyplot as plt
G = nx.DiGraph()
G.add_edge("محمد رضا","رضایی زاده حسین")
nx.draw(G,encoding='utf-8', with_labels=True)
plt.savefig("path.png")
plt.show()

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欢迎来到SO。非常好的工作示例

标签将被绘图的边界框剪裁。 如果增加x轴限制，它们应该可以

import networkx as nx
import matplotlib.pyplot as plt
G = nx.DiGraph()
G.add_edge("محمد رضا","رضایی زاده حسین")
fig, ax = plt.subplots(1,1)
nx.draw(G,encoding='utf-8', with_labels=True, ax=ax)
xlim = ax.get_xlim()
dx = xlim[1]-xlim[0]
ax.set_xlim(xlim[0]-0.1*dx, xlim[1]+0.1*dx)
plt.savefig("path.png")
plt.show()