plt同时画多个子图
for i in range(7):
plt.figure(i,figsize=(10,10))
plt.subplot(1,3,1)
plt.imshow(teacher_mid[i][0], interpolation='bicubic')
plt.subplot(1,3,2)
plt.imshow(student_mid[i][0], interpolation='bicubic')
plt.subplot(1,3,3)
plt.imshow(at_student_mid[i][0], interpolation='bicubic')
plt.show()