报错‘Failed to import pydot. You must `pip install pydot` and install graphviz解决

1.安装pydotplus

pip install pydotplus 

2.安装graphviz
下载地址:

https://www2.graphviz.org/Packages/development/windows/10/cmake/Release/x64/graphviz-install-2.44.2~dev.20201107.0123-win64.exe

安装的时候设置系统路径选上

3.不要安装pydot和pydot_ng如果安装了这2个依然会报错

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