如何在Python中绘制球形线段？

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

radius = 1  # 球体半径
theta = np.linspace(0, 2 * np.pi, 100)  # 绘制球体的经度范围
phi = np.linspace(0, np.pi, 100)  # 绘制球体的纬度范围

x = radius * np.outer(np.cos(theta), np.sin(phi))
y = radius * np.outer(np.sin(theta), np.sin(phi))
z = radius * np.outer(np.ones(np.size(theta)), np.cos(phi))

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.plot_surface(x, y, z, color='b')

ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')
ax.set_title('球形线段')

plt.show()