failed to execute WindowsPath('dot'), make sure the Graphviz executables are on your systems' PATH
1.在anaconda里pip install graphviz
2.Download | Graphviz 下载Graphviz安装包,安装时选择添加系统变量Path,并记录路径
3.代码中添加引用
import os
os.environ["PATH"] += os.pathsep + r'F:\Anaconda3\Graphviz\bin/'
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