Common software sources that python pip installation depends on: Tsinghua source, Ali source, Zhongke Dayuan, Douban source

1. Tsinghuayuanhttps://pypi.tuna.tsinghua.edu.cn/simple/

pip install xxx -i https://pypi.tuna.tsinghua.edu.cn/simple/

2. Aliyuanhttps://mirrors.aliyun.com/pypi/simple

pip install xxx -i https://mirrors.aliyun.com/pypi/simple

3. Dayuan of Science and Technology of Chinahttps://pypi.mirrors.ustc.edu.cn/simple/

pip install xxx -i https://pypi.mirrors.ustc.edu.cn/simple/

Four, watercress sourcehttp://pypi.douban.com/simple/

pip install xxx -i http://pypi.douban.com/simple/

The mirror source is to use the official source as a mirror, and you can download the software here. For example, if the official source of ubuntu is abroad, downloading software may be very slow. At this time, it is necessary to replace it with a domestic mirror source.