mac更新pip失败

问题描述

下载pytorch失败，出现如下提示：

You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

执行相应命令后报错：

-bash: pip: command not found

相关背景

os同时装有python2和python3

解决方案

pip3 install --upgrade pip