Chrls0 PointsBot Python

import re
import socket
from time import sleep
from datetime import datetime

#Settings
NICK = "BOTNAME"
PASS = "BOTPASS"

#Advanced settings
HOST = "irc.twitch.tv"
PORT = 6667
CHAN = "#chrlsO"
RATE = 5 # fractions of a second (1/rate)
CHAT_MSG = re.compile(r"^:\w+!\w+@\w+\.tmi\.twitch\.tv PRIVMSG #\w+ :")

def chat(sock, msg):
    sock.send(("PRIVMSG %s :%s\r\n" % (CHAN, msg)).encode("utf-8"))
    print("%s: %s" % (NICK, msg))

def is_number(s):
    try:
        int(s)
        return True
    except ValueError:
        return False

def check_points(sock, user, msg):
    if(msg[:8] == '!cashout'):
        f = open('cashouts.txt', 'a')
        f.write(str(datetime.now().date()) + " " + user + " " + msg[8:] + "\n")
        f.close()
        chat(sock, user + ", cashout request received.")

s = socket.socket()
s.connect((HOST, PORT))
s.send("PASS {}\r\n".format(PASS).encode("utf-8"))
s.send("NICK {}\r\n".format(NICK).encode("utf-8"))
s.send("JOIN {}\r\n".format(CHAN).encode("utf-8"))

while True:
    response = s.recv(1024).decode("utf-8")
    if response == "PING :tmi.twitch.tv\r\n":
        s.send("PONG :tmi.twitch.tv\r\n".encode("utf-8"))
    else:
        username = re.search(r"\w+", response).group(0) # return the entire match
        message = CHAT_MSG.sub("", response)
        print(username + ": " + message)
        check_points(s, username, message)
    sleep(1 / RATE)