解决pip无法安装

安装python包

sudo pip install nltk

报错

sudo: pip: command not found

检查是python2 还是python3

% pip3 -V
pip 19.0.3 from   (python 3.7)

用pip3安装

pip3 install nltk

出现错误

Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/Library/Python/3.7'
Consider using the `--user` option or check the permissions.

You are using pip version 19.0.3, however version 22.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

更新版本

sudo pip3 install --upgrade pip