pip config set global.index-url https://mirrors.aliyun.com/pypi/simple
pip config set global.trusted-host mirrors.aliyun.com
pip config set global.index-url https://mirrors.aliyun.com/pypi/simple
pip config set global.trusted-host mirrors.aliyun.com
https://blog.csdn.net/u013129300/article/details/129329786