设置为清华镜像
pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
每次下载库时后面添加
-i https://pypi.tuna.tsinghua.edu.cn/simple some-package
例如,
pip3 install torch===1.4.0 torchvision===0.5.0 -f https://download.pytorch.org/whl/torch_stable.html -i https://pypi.tuna.tsinghua.edu.cn/simple some-package