Python matplotlib 乐成利用SimHei 中文字体

1. 背景

Python 利用 matplotlib 库 设置中文字体时

1. plt.rcParams["font.sans-serif"] = ["SimHei"]
2. plt.rcParams["axes.unicode_minus"] = False

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出现下面的错误：

1. UserWarning: Glyph 25968 (\N{CJK UNIFIED IDEOGRAPH-6570}) missing from font(s) DejaVu Sans.
2.   plt.tight_layout()
3. findfont: Generic family 'sans-serif' not found because none of the following families were found: SimHei
4. findfont: Generic family 'sans-serif' not found because none of the following families were found: SimHei
5. findfont: Generic family 'sans-serif' not found because none of the following families were found: SimHei
6. findfont: Generic family 'sans-serif' not found because none of the following families were found: SimHei
7. findfont: Generic family 'sans-serif' not found because none of the following families were found: SimHei
8. findfont: Generic family 'sans-serif' not found because none of the following families were found: SimHei

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报错信息表明在绘制图形时，系统缺少所需的字体（如SimHei），导致无法正确显示中文字符
2. 下载

下载地址：
https://gitcode.com/open-source-toolkit/c55ef/?utm_source=tools_gitcode&index=top&type=card
下载后更名

1. sudo mv Ubuntu_18.04_SimHei.ttf SimHei.ttf

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3. 更新

3.1 将下载的SimHei.ttf文件移动到系统的字体目次中

1. sudo mv SimHei.ttf /usr/share/fonts/truetype/

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3.2 更新系统的字体缓存

1. sudo fc-cache -fv

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3.3 查看系统中的字体

1. $ fc-list | grep "SimHei"
2. /usr/share/fonts/truetype/SimHei.ttf: SimHei,黑体:style=Regular

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3.4 清算 matplotlib 缓存目次

1. rm ~/.cache/matplotlib -fr

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3.5 重新启动IDE运行代码

天生图片如下

4. 参考

Matplotlib 找不到基本字体

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