Demo requests using Tor and changing circuits

demo.py

"""Prints external IP address and a few bytes from example.com repeatedly."""
import time

from torrequests import Tor # pip install torrequests
from stem import Signal # pip install stem
from stem.control import Controller # pip install stem

SLEEP_SEC_BT_REQS = 10

def _new_nym():
    """
    You must configure your torrc file to designate a Control Port before
    connecting in this fashion. For example, if using Tor Browser on MacOS:
    Add this line:

    ControlPort 9151

    To this file:
    ~/Library/Application Support/TorBrowser-Data/Tor/torrc

    "Tor does not have a method for cycling your IP address. This is on purpose,
    and done for a couple reasons. The first is that this capability is usually
    requested for not-so-nice reasons such as ban evasion or SEO. Second,
    repeated circuit creation puts a very high load on the Tor network, so
    please don't!"
    https://stem.torproject.org/faq.html#how-do-i-request-a-new-identity-from-tor
    """
    with Controller.from_port(port=9151) as controller:
        controller.authenticate()
        controller.signal(Signal.NEWNYM)

def _main():

    tor = Tor(tor_ip='127.0.0.1', tor_port=9150)

    for _ in range(0, 3):
        print tor.getPublicIP()
        req = tor.get('http://example.com/')
        print req.text[0:30]
        _new_nym()
        time.sleep(SLEEP_SEC_BT_REQS)

if __name__ == '__main__':
    _main()