pip install Flask -i http://pypi.douban.com/simple
~/.pip/pip.conf
The documentation says the config file for Windows is %HOME%pippip.ini, but pip actually looks for %APPDATA%pippip.ini. It only uses %HOME% if %APPDATA% isn't set.
On Windows pip should look for its config file in the 'pip' subdirectory of
the user's Home directory (as returned by os.path.expanduser('~')). The
%APPDATA% directory is hidden by default, so it seems it's not intended for
users to modify it directly.
The fix is just a matter of removing one line from locations.py. I'm attaching
a diff.
%HOME% = C:Users<usrname>, e.g. C:Userszpc
windows:
"C:Userszpcpippip.ini"
[global] timeout = 60 index-url = http://pypi.douban.com/simple trusted-host = pypi.douban.com
非官方的python第三方软件包安装地址
http://www.lfd.uci.edu/~gohlke/pythonlibs/