Bot pra avisar quando o site do tickets for fun não está busy

gistfile1.py

# -*- encoding: utf-8 -*-

import requests
import sys
import time


def play_sound():
    sys.stdout.write('\a')


def is_tff_busy():
    url = 'http://www.ticketsforfun.com.br/'
    req = requests.get(url)
    if req.ok and 'tryAgainButton' not in req.content:
        return True
    else:
        return False


def sleep():
    time.sleep(5)


while True:
    if not is_tff_busy():
        print 'Site on!'
        play_sound()
    else:
        print 'Site busy!'
    sleep()