最开始加这几句程序：
from pylab import mpl
mpl.rcParams['font.sans-serif'] = ['FangSong'] # 指定默认字体
mpl.rcParams['axes.unicode_minus'] = False # 解决保存图像是负号'-'显示为方块的问题
matplotlib Pythoh 如何显示中文
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Origin blog.csdn.net/x1131230123/article/details/120879002
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