1, Tsinghua source
pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple virtualen
2, watercress source
pip3 install -i https://pypi.douban.com/simple requests
1, Tsinghua source
pip3 install -i https://pypi.tuna.tsinghua.edu.cn/simple virtualen
2, watercress source
pip3 install -i https://pypi.douban.com/simple requests