在matplotlib中有没有构建堆叠条形图的简单方法？

import matplotlib.pyplot as plt

categories = ['Category 1', 'Category 2', 'Category 3']  # 类别
subcategories = ['Subcategory 1', 'Subcategory 2', 'Subcategory 3']  # 子类别
values = [[10, 15, 20], [5, 10, 15], [8, 12, 16]]  # 子类别的值

fig, ax = plt.subplots()

# 遍历每个类别
for i in range(len(categories)):
    # 绘制每个子类别的条形
    ax.bar(subcategories, values[i], label=categories[i])

# 添加图例
ax.legend()

# 设置横轴和纵轴标签
ax.set_xlabel('Subcategories')
ax.set_ylabel('Values')

# 设置标题
ax.set_title('Stacked Bar Chart')

# 显示图表
plt.show()