[开发工具]Python_配置环境——问题：error: The read operation timed out和WARNING: You are using pip version 20.2.3； howev

当pip安装一个模块时，遇到错误：

WARNING: You are using pip version 20.2.3; however, version 21.3.1 is available.
You should consider upgrading via the 'c:\users\12294\appdata\local\programs\python\python39\python.exe -m pip install --upgrade pip' command.

原因大概意思就是 pip版本太低。

于是去更新pip版本。找到的命令是：easy_install -U pip

可是又报错：error: The read operation timed out

?原因是访问国外网站，访问链接超时

又找到了一条新命令：easy_install -i https://pypi.doubanio.com/simple/ --upgrade pip

?成功！

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