ImportError: Failed to import pydot. You must install pydot and graphviz for `pydotprint` to work.

用了pip install pydot; pip install graphviz都不行

去网上查了才发现window下要去https://graphviz.gitlab.io/下载windows版本的安装包，安装好之后在环境变量中添加对应的路径重启ide