如何使用matplotlib绘制水平百分比条形图？

import matplotlib.pyplot as plt

categories = ['类别1', '类别2', '类别3']
percentages = [70, 15, 15]

fig, ax = plt.subplots()

ax.barh(categories, percentages, color='blue')

ax.set_title('水平百分比条形图')
ax.set_xlabel('百分比')
ax.set_ylabel('类别')

ax.set_xlim([0, 100])
ax.set_xticks(range(0, 101, 10))
ax.set_xticklabels([str(x) + '%' for x in range(0, 101, 10)])

for i in range(len(categories)):
    ax.text(percentages[i], i, str(percentages[i]) + '%',
            ha='left', va='center', color='white')

plt.show()