import matplotlib.pyplot as plt?
import numpy as np
from pylab import mpl

mpl.rcParams['font.sans-serif'] = ['Microsoft YaHei']
Y2016 = [83.2, 85, 83.9]?
Y2017 = [80.4, 74.6, 86.5]
Y2018 = [85.8, 87.2, 89.1]
labels = ['準(zhǔn)確性', '敏感性', '特異性']?
bar_width = 0.25?
?
# 繪圖
plt.figure(figsize=(10,10))
plt.bar(np.arange(3), Y2016, label='TSVM', color='white', alpha=1, width=bar_width,edgecolor="k",hatch='/')?
plt.bar(np.arange(3) + bar_width, Y2017, label=u'協(xié)同訓(xùn)練半監(jiān)督', color='white', alpha=1, edgecolor="k",width=bar_width,hatch="***")
plt.bar(np.arange(3) + 2*bar_width, Y2018, label=u'結(jié)合TSVM和協(xié)同訓(xùn)練半監(jiān)督', color='white', alpha=1, edgecolor="k",width=bar_width,hatch="xxx")
?
# 添加刻度標(biāo)簽?
plt.xticks(np.arange(3) + bar_width, labels)
plt.tick_params(labelsize=20)
# 設(shè)置Y軸的刻度范圍?
plt.ylim([0, 100])?
?
# 為每個(gè)條形圖添加數(shù)值標(biāo)簽?
for x2016, y2016 in enumerate(Y2016):?
? ? plt.text(x2016, y2016 + 2, '%s' % y2016, ha='center',fontsize=20)?
?
for x2017, y2017 in enumerate(Y2017):?
? ? plt.text(x2017 + bar_width, y2017 + 2, '%s' % y2017, ha='center',fontsize=20)

for x2018, y2018 in enumerate(Y2018):?
? ? plt.text(x2018 + 2*bar_width, y2018 + 2, '%s' % y2018, ha='center',fontsize=20)
# 顯示圖例
plt.legend(bbox_to_anchor=(0.5,1), loc=3, borderaxespad=0,fontsize=17)
plt.savefig('foo.png')?
# 顯示圖形?
plt.show()?