pip不能安装、升级、卸载软件问题

例如想要升级nibabel时

使用命令：sudo pip install --upgrade nibabel

报错：

Cannot uninstall ‘nibabel’. 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.

问题解析：

旧版本依赖多，不能清晰的删除，此时应该忽略旧版本升级，即如下

加上　　--ignore-installed 　

解决办法：sudo pip install nibabel --ignore-installed nibabel