python 换源命令

# 换阿里云的源
$ pip config set global.index-url https://mirrors.aliyun.com/pypi/simple
$ pip config set install.trusted-host mirrors.aliyun.com

# 换清华大学的源
$ pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
$ pip config set install.trusted-host pypi.tuna.tsinghua.edu.cn