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# 画图时显示汉字
plt.rcParams['font.family'] = ['sans-serif']
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus']=False  # 正常显示负号

# 查看当前系统JupyterLab支持的所有字体
from matplotlib.font_manager import FontManager
mpl_fonts = set(f.name for f in FontManager().ttflist)
print('all font list get from matplotlib.font_manager:')
for f in sorted(mpl_fonts):
    print('t' + f)