User behind a proxy will face a problem

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Try to access twitter api from behind a proxy


What is the expected output? What do you see instead?
We should get the friends of a user when placing the api.GetFriends() call but 
I am getting a 407 error.

What version of the product are you using? On what operating system?
The version is 1.1 and the OS is ubuntu 12.04 LTS.

Please provide any additional information below.

The problem is resolved if we add proxies in the twitter.py file and add one 
"proxies" parameter in the requests.get() call

Original issue reported on code.google.com by [email protected] on 4 May 2015 at 7:20