去边框 方法一: import numpy as np import matplotlib.pyplot as plt # 数据准备 data=np.random.rand(10,10) fig, ax=plt.subplots() data[data==-1]=np.nan#去掉缺省值-1 im =ax.imshow(data,interpolation='none',cmap='Reds_r',vmin=0.6,vmax=.9)#不插值 #去掉边框 ax.spines['top']