First, PIP
1, add a source
For example, add SJTU Source https://mirror.sjtu.edu.cn/pypi/web/simple：
pip config set global.index-url https://mirror.sjtu.edu.cn/pypi/web/simple
If SET has multiple times, it seems to be only saved the mirror source of the last set.
2, delete the source
pip config unset global.index-url
3, check which source now
pip config list
Second, Conda
1, add a source
For example, Tsinghua Source:
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 --set show_channel_urls yes
SJTU:
conda config --add channels https://mirror.sjtu.edu.cn/anaconda/{{pkg_name}}
e.g.
conda config --add channels https://mirror.sjtu.edu.cn/anaconda/pkgs/free
conda config --add channels https://mirror.sjtu.edu.cn/anaconda/pkgs/main
conda config --add channels https://mirror.sjtu.edu.cn/anaconda/pkgs/mro
conda config --add channels https://mirror.sjtu.edu.cn/anaconda/pkgs/msys2
pkgs/pro: (deprecated) conda config --add channels https://mirror.sjtu.edu.cn/anaconda/pkgs/pro
pkgs/r: (empty) conda config --add channels https://mirror.sjtu.edu.cn/anaconda/pkgs/r
2, delete the source
conda config --remove-key channels
3, See which sources are used now
conda config --show channels
Can also use
conda config --show-sources