报错：WARNING: You are using pip version 19.2.3, however version 20.0.2 is available. You should consider upgrading via the ‘python -m pip install –upgrade pip’ command. 原因：pip版本太低不合适，需要更新升级。 方法一：输入系统提示的更新命令： python -m pip install –upgrade pip 如果还是报错，用方

执行下面两个命令都不行。 python -m pip install –upgrade pip python3 -m pip install pip==20.0.2 使用国内下载源（成功）： C:\WINDOWS\system32>pip –version pip 19.3.1 from c:\users\yanghang\appdata\local\programs\python\python37\lib\site-packages\pip (python 3.7) C:\WINDOW