https://help.mirrors.cernet.edu.cn/anaconda/

cat <<'EOF' > ~/.condarc
channels:
  - defaults
show_channel_urls: true
default_channels:
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/r
  - https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/msys2
custom_channels:
  conda-forge: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
  pytorch: https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud
EOF

https://help.mirrors.cernet.edu.cn/pypi/

临时使用

pip install -i https://mirrors.cernet.edu.cn/pypi/web/simple some-package

设为默认

pip config set global.index-url https://mirrors.cernet.edu.cn/pypi/web/simple