matplotlib绘制两个柱状图

import matplotlib.pyplot as plt
import numpy as np


data_2 = [93, 92, 93, 91, 92,93]

data_3 = [57,56, 57,56,56.,54]

labels = ['HL', 'ED', 'HD_2', 'HD_all', 'Voting','ME']


fig,ax = plt.subplots(figsize=(9,6),dpi=300)
width_1 = 0.4

ax.bar(np.arange(len(data_2)),data_2,width=width_1,tick_label=labels,color='b',label = "UCI")

ax.bar(np.arange(len(data_3))+width_1,data_3,width=width_1,tick_label=labels,color='r',label="Opportunity")


ax.set_ylim([55,94])

plt.ylabel('%')

ax.legend()

plt.tight_layout()
plt.show()