Cannot uninstall 'pyserial'. It is a distutils installed project and thus we cannot a ccurately determine which files belong to it which would lead to only a partial uninstall. 解决方法

最近再升级 pyserial模块时，采用 pip install --upgrade pyserial，待模块下载完成准备卸载原版本时

提示：“Cannot uninstall 'pyserial'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

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然后再强制去卸载时也报同样错误，在网上找了一些方法，经试过下面的方法可解决问题：

pip install --ignore-install pyserial 完美解决升级问题