gistfile1.py

#!/usr/bin/env python

"""
You need a way to verify whether the proxy is used. An easy one is to install
squid and block all other outgoing connections with something like:

iptables -A OUTPUT -m owner --uid-owner root -j ACCEPT
iptables -A OUTPUT -m owner --uid-owner proxy -j ACCEPT
iptables -A OUTPUT -p tcp --dport 80 -j DROP
iptables -A OUTPUT -p tcp --dport 443 -j DROP
"""


import urllib3

proxy = urllib3.ProxyManager('http://localhost:3128/')

count = 0
while True:
    r = proxy.request('GET', 'https://pypi.python.org/')
    print count
    count += 1