plt绘图标题设置

import matplotlib.pyplot as plt

plt.rcParams['font.family'] = 'SimHei'

fig = plt.figure(facecolor = 'lightgrey')

plt.subplot(2,2,1)
plt.title('子标题')
plt.subplot(2,2,2)
plt.title('子标题2', loc = 'left',color = 'b')
plt.subplot(2,2,3)
myfontdict = {'fontsize':12, 'color':'g', 'rotation':30}
plt.title('子标题3', fontdict = myfontdict)
plt.subplot(2,2,4)
plt.title('子标题4', color = 'white',backgroundcolor='black')

plt.suptitle('全局标题',fontsize = 20, color = 'red',backgroundcolor='yellow')
plt.tight_layout(rect=(0,0,1,0.9))#使子图标题和全局标题与坐标轴不重叠

plt.show()