pip 源 任选一个

pip config set global.index-url https://mirrors.aliyun.com/pypi/simple/
pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
pip config set global.index-url http://mirrors.cloud.tencent.com/pypi/simple

conda源

conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/
conda config --add channels https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/pytorch/linux-64/
conda config --set show_channel_urls yes

参考