TOR con Python y cambiar circuito programáticamente

changeTorCircuit.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
 
import time
import socks
# pip install pysocks
import socket
import requests
# pip install requests
import traceback
 
socketNoProxy = None
 
def changeTorCircuit():
        # /etc/tor/torrc
        # ControlPort 9051
        # CookieAuthentication 0
        result = False
        try:
                socket.socket = socketNoProxy
                s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                s.connect(("127.0.0.1", 9051))
                s.send("AUTHENTICATE\n")
                if "250 OK" in s.recv(128):
                        s.send("SIGNAL NEWNYM\n")
                        if "250 OK" in s.recv(128):
                                s.send("quit\n")
                                result = True
                                time.sleep(10)
        except Exception as e:
                print "Exception: " + str(e) + "\n" + str(traceback.format_exc())
        finally:
                s.close()
 
        return result
 
def setTor():
        socks.setdefaultproxy(proxy_type=socks.PROXY_TYPE_SOCKS5, addr="127.0.0.1", port=9050)
        socket.socket = socks.socksocket
 
def checkIP():
        r = requests.get('http://myexternalip.com/raw')
        return r.text
 
def main():
        # Establecemos proxy para que todo el tráfico pase TOR
        setTor()
        # Obtenemos ip de salida
        print checkIP()
        # Cambiamos circuito TOR para salir por otra IP
        changeTorCircuit()
        # ...
        setTor()
        print checkIP()
        changeTorCircuit()
        setTor()
        print checkIP()
        changeTorCircuit()
        setTor()
        print checkIP()
        changeTorCircuit()
        setTor()
        print checkIP()
 
# Guardamos socket por defecto sin proxy
socketNoProxy = socket.socket
 
if __name__ == "__main__":
        main()