Python代码提问

怎么用matplotlib绘制横向的条形图？

import matplotlib.pyplot as plt

y = [1, 2, 3, 4]
width = [5, 32, 10, 23]
ax1 = plt.subplot(1, 1, 1)

ax1.barh(y, width)
ax1.set_title('Test')

plt.show()