为什么更新pip时遇到这个？

Question

安装pandas时遇到这个

WARNING: You are using pip version 21.2.4; however, version 21.3.1 is available.
You should consider upgrading via the 'D:\python\python.exe -m pip install --upgrade pip' command.

按安装查到的结果更新pip
在cmd输出pip install beautifulsoup4出现如下翻译，该如何解决

Answer 1

在线安装清华镜像上的，下载速度还快：

c:> pip install pandas -i https://pypi.tuna.tsinghua.edu.cn/simple