问题如下图：
from pylab import mplmpl.rcParams['font.sans-serif'] = ['SimHei'] #指定默认的字体显示mpl.rcParams['axes.unicode_minus'] = False # 用于解决保存图像是负号'-'显示为方块的问题
更多字体可以使用以下代码获取：
import pyfigletprint(pyfiglet.FigletFont.getFonts())
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