无法在python中更改绘图曲面绘图中的轴标题

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.set_xlabel('X轴标题')
ax.set_ylabel('Y轴标题')
ax.set_zlabel('Z轴标题')

import numpy as np

# 生成数据
x = np.linspace(-5, 5, 100)
y = np.linspace(-5, 5, 100)
X, Y = np.meshgrid(x, y)
Z = np.sin(np.sqrt(X**2 + Y**2))

# 绘制曲面图
ax.plot_surface(X, Y, Z, cmap='viridis')

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
import numpy as np

# 创建图形对象
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

# 设置轴标题
ax.set_xlabel('X轴标题')
ax.set_ylabel('Y轴标题')
ax.set_zlabel('Z轴标题')

# 生成数据
x = np.linspace(-5, 5, 100)
y = np.linspace(-5, 5, 100)
X, Y = np.meshgrid(x, y)
Z = np.sin(np.sqrt(X**2 + Y**2))

# 绘制曲面图
ax.plot_surface(X, Y, Z, cmap='viridis')

# 显示图形
plt.show()