change IP address using tor with Python3

change_ip.py

# change IP via tor with python
import requests
from stem import Signal
from stem.control import Controller
import socks, socket
import time

# tuts 
# https://www.torproject.org/docs/faq.html.en#torrc
# https://stem.torproject.org/tutorials/the_little_relay_that_could.html
# https://stackoverflow.com/questions/9887505/how-to-change-tor-identity-in-python
# sudo pip3 install stem 
# sudo apt-get install tor
# generate new password for tor > tor --hash-password "<new_password>"
# save new password hash -> /etc/tor on line -> HashedControlPassword
# uncomment HashedControlPassword and ControlPort
# restart tor service -> /etc/init.d/tor restart -> sudo service tor restart


def changeIp(current_ip):
    controller.signal(Signal.NEWNYM)
    time.sleep(controller.get_newnym_wait())

    
with Controller.from_port(port=9051) as controller:
    controller.authenticate(password='sexo')
    socks.setdefaultproxy(proxy_type=socks.PROXY_TYPE_SOCKS5, addr="127.0.0.1", port=9050)
    socket.socket = socks.socksocket
    current_ip = requests.get(url='http://icanhazip.com/')
    print(current_ip.text)
    changeIp(current_ip.text)
    current_ip = requests.get(url='http://icanhazip.com/')
    print(current_ip.text)
    

Error:

Connection refused[Errno 61]