Python语言pip升级python-augeas失败之解决办法

一直用pip升级python-augeas，如下：

pip install --upgrade python-augeas

升级失败，提示如下：

ERROR: Cannot uninstall 'python-augeas'. 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.

解决办法，加--ignore-installed，文件解决：

pip install --upgrade --ignore-installed python-augeas

大功告成~~~