By using several of pip, pip source for the default rate is really intolerable, so they collected some pip domestic sources, as follows:
Ali cloud http://mirrors.aliyun.com/pypi/simple/
China University of Science and Technology https : //pypi.mirrors.ustc.edu.cn/simple/
watercress (douban) http://pypi.douban.com/simple/
Tsinghua University https://pypi.tuna.tsinghua.edu.cn/simple/
China University of Science and technology http://pypi.mirrors.ustc.edu.cn/simple/
very simple to use, add url directly to -i.
pip install web.py -i http://pypi.douban.com/simple --trusted-host pypi.douban.com