python matplotlib模块文字图

import matplotlib.pylab as plt
import numpy as np
#处理中文乱码
plt.rcParams['font.sans-serif'] = ['Microsoft YaHei']


#写入文本
#plt.text
plt.figure(figsize=(8,4))
plt.text(0.6,0.7,'天王盖地虎',size= 20,
        rotation=45,
         ha='center',va='center',
         bbox=dict(boxstyle='round',
                   ec=(1.,0.6,0.5),
                   fc=(1.,0.8,0.8)
                                ))
plt.text(0.55,0.06,'宝塔镇河妖',size= 20,
        rotation=-25,
         ha='right',va='top',
         bbox=dict(boxstyle='square',
                   ec=(1.,0.5,0.5),
                   fc=(1.,0.8,0.8)
                                ))
plt.show()