1. 指定阿里云镜像, 安装requirements.txt中的所有
pip install -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com -r requirements.txtpip instalpip install -i https://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com -r requirements.txtpip instal