如何使用matplotlib从三个不同的数据框中绘制条形图？

import matplotlib.pyplot as plt
import numpy as np

data1 = [10, 15, 20, 25, 30]
data2 = [5, 8, 12, 18, 20]
data3 = [12, 16, 22, 28, 35]

labels = ['A', 'B', 'C', 'D', 'E']

width = 0.3

fig, ax = plt.subplots()

ax.bar(np.arange(len(data1)), data1, width, label='Data 1')
ax.bar(np.arange(len(data2)) + width, data2, width, label='Data 2')
ax.bar(np.arange(len(data3)) + 2*width, data3, width, label='Data 3')

ax.set_xlabel('X Label')
ax.set_ylabel('Y Label')

ax.legend()

ax.set_xticks(np.arange(len(data1)) + width)
ax.set_xticklabels(labels)

plt.show()