配置当前用户使用豆瓣pip源

mkdir ~/.pip/
cat ~/.pip/pip.conf
[global]
index-url = https://pypi.douban.com/simple
download_cache = ~/.cache/pip
[install]
use-mirrors = true
mirrors = https://pypi.douban.com/
一些可选的参数
trusted-host = pypi.douban.com
timeout=6000
来源： http://my.oschina.net/u/2012873/blog/648152

ubuntu配置文件
~/.pydistutils.cfg

On Unix the default configuration file is: $HOME/.config/pip/pip.conf which respects the XDG_CONFIG_HOME environment variable.
On Mac OS X the configuration file is $HOME/Library/Application Support/pip/pip.conf.
On Windows the configuration file is %APPDATA%pippip.ini.
There are also a legacy per-user configuration file which is also respected, these are located at:

On Unix and Mac OS X the configuration file is: $HOME/.pip/pip.conf
On Windows the configuration file is: %HOME%pippip.ini
You can set a custom path location for this config file using the environment variable PIP_CONFIG_FILE.

Inside a virtualenv:

On Unix and Mac OS X the file is $VIRTUAL_ENV/pip.conf
On Windows the file is: %VIRTUAL_ENV%pip.ini