我想为barplot扩展一个自定义函数，这样我就可以堆叠条形图了

import matplotlib.pyplot as plt
import numpy as np

def stacked_barplot(data_sets, labels, colors, **kwargs):
    num_sets = len(data_sets)
    num_categories = len(data_sets[0])
    indices = np.arange(num_categories)

    fig, ax = plt.subplots()

    bottom = np.zeros(num_categories)  # 用于记录每个类别的底部位置

    for i in range(num_sets):
        data = data_sets[i]
        label = labels[i]
        color = colors[i]

        ax.bar(indices, data, bottom=bottom, label=label, color=color)
        bottom += data  # 更新底部位置

    ax.set_xticks(indices)
    ax.set_xticklabels(categories)

    ax.set_xlabel(kwargs.get('xlabel', ''))
    ax.set_ylabel(kwargs.get('ylabel', ''))
    ax.set_title(kwargs.get('title', 'Stacked Barplot'))

    ax.legend()

    plt.show()

# 示例用法
data_sets = [[10, 15, 12, 8], [5, 8, 6, 12], [7, 9, 10, 5]]
labels = ['A', 'B', 'C']
colors = ['red', 'green', 'blue']

stacked_barplot(data_sets, labels, colors, title='My Stacked Barplot')