pip install --proxy="user:[email protected]:port" packagename

origin url：
http://xiuxixiuxi.blogspot.jp/2013/04/how-to-install-packages-with.html

There are two easy way to install packages for python (regardless of the platform you're using), namely easy_install and pip. The later is actually an overlay on the former.

They work very nicely, except with pesky proxies. Both of them have the ability to download through proxy, but they use different syntax.

For pip you will simply add the option '--proxy' to indicate the proxy address like so:
pip install --proxy="user:[email protected]:port" yourpackage

Whereas easy_install will rely on environment variables, http_proxy, https_proxy , ftp_proxy

#for linux / unix
export http_proxy="user:[email protected]:port"
export https_proxy="user:[email protected]:port"
export ftp_proxy="user:[email protected]:port"

#windows
set HTTP_PROXY="user:[email protected]:port"
set HTTPS_PROXY="user:[email protected]:port"
set FTP_PROXY="user:

If you want those settings to persist, don't forget to add them to your bashrc, or through your windows settings