找到pip.ini(可能在"C:\Users\Administrator\AppData\Roaming\pip\pip.ini"）→记事本打开→添加相应源
[global]
index-url = https://pypi.tuna.tsinghua.edu.cn/simple
[install]
use-mirrors =true
mirrors =https://pypi.tuna.tsinghua.edu.cn/simple
trusted-host =tsinghua.edu.cn
原文：https://www.cnblogs.com/fanfan-1/p/12609553.html