如何在Python的Matplotlib中绘制嵌套饼图？

import matplotlib.pyplot as plt

# 数据
sizes_outer = [30, 20, 50]  # 外层饼图数据
sizes_inner = [15, 10, 5]   # 内层饼图数据

# 颜色
colors_outer = ['red', 'green', 'blue']  # 外层饼图颜色
colors_inner = ['yellow', 'orange', 'purple']  # 内层饼图颜色

# 绘制嵌套饼图
fig, ax = plt.subplots()

# 外层饼图
ax.pie(sizes_outer, colors=colors_outer, radius=1, wedgeprops=dict(width=0.3, edgecolor='w'))

# 内层饼图
ax.pie(sizes_inner, colors=colors_inner, radius=0.7, wedgeprops=dict(width=0.3, edgecolor='w'))

# 设置图形属性
ax.set(aspect="equal")

# 添加图例
ax.legend(["A", "B", "C"], loc="upper right")

# 显示图形
plt.show()