set source ip address

test_requests.py

import socket
import requests

real_create_conn = socket.create_connection

#diferentes ips que salen por diferentes enlaces
ip1 = '192.168.1.2'
ip2 = '192.168.1.3'

#forzamos la ip1
def set_src_addr1(*args):
    address, timeout = args[0], args[1]
    source_address = (ip1, 0)
    return real_create_conn(address, timeout, source_address)

#forzamos la ip2
def set_src_addr2(*args):
    address, timeout = args[0], args[1]
    source_address = (ip2, 0)
    return real_create_conn(address, timeout, source_address)

socket.create_connection = set_src_addr1
print ip1, requests.get('http://baicom.com/ip').content

socket.create_connection = set_src_addr2
print ip2, requests.get('http://baicom.com/ip').content

it's not working!