PIP 更换下载源加速下载

shell
# 腾讯源
https://mirrors.cloud.tencent.com/pypi/simple
# 阿里源
https://mirrors.aliyun.com/pypi/simple

临时使用源

shell
pip install -i https://mirrors.aliyun.com/pypi/simple some-package

设为默认源

shell
# Python2
pip2 install -U pip==18.1 -i https://mirrors.aliyun.com/pypi/simple/
pip2 config set global.index-url https://mirrors.aliyun.com/pypi/simple

# Python3
pip3 install -U pip==21.3.1 -i https://mirrors.aliyun.com/pypi/simple/ # Python 3.6
pip3 config set global.index-url https://mirrors.aliyun.com/pypi/simple

修改 requirements.txt 文件，在 requirements.txt 开头加入一行。

requirements.txt
--index-url=https://mirrors.aliyun.com/pypi/simple/