Simple script to check when tickets go on sale at the IMAX. You can search for multiple films and notify different email addresses.

imax.py

#!/usr/bin/env python

'''
Simple script to check when tickets go on sale at the London IMAX.
You can search for multiple films and notify different email addresses.
'''

__author__ = 'Sergio Garcez'

import sys, urllib, sched, time, smtplib, logging
from email.mime.text import MIMEText
try:
   from bs4 import BeautifulSoup
except ImportError:
   exit('This script requires BeautifulSoup4. Please install it via pip or easyinstall')

_SENDER = 'xx@gmail.com'
_SMTP_SERVER_PWD = 'xx'
_SMTP_SERVER_URL = 'smtp.gmail.com:587'
BFI_URL = 'http://www.bfi.org.uk/whatson/bfi_imax/coming_soon/now_booking/'


def delayedCall(function,delay=24,*args):
    result, retargs  = function(*args)
    if delay > 0 and not result :
        logging.getLogger('imax').info( "Waiting %s hours to search again." % delay )
        _s = sched.scheduler(time.time, time.sleep)
        _s.enter(delay*60*60, 1, delayedCall, [function,delay]+retargs)
        _s.run()


def checkBFI(films, emails=None):
    if not films:
        raise ValueError("film list must exist")

    f = urllib.urlopen(BFI_URL)
    soup = BeautifulSoup(f)
    tags = soup.select(".view-content.view-content-taxonomy-term > a")
    
    logging.getLogger('imax').info('Searching for: %s' % (', '.join(films)) )
    
    films_found  = [film for film in films for tag in tags if film.lower() in tag.text.lower()]
    
    if films_found:
        logging.getLogger('imax').info('Found %s!' % ", ".join(films_found))
        
        if emails :
            logging.getLogger('imax').info('Emailing: %s' % ',  '.join(emails))
            send_email(emails, 'Tickets are now available for: %s !' % ',  '.join(films_found), 
                'Here:\n %s' % BFI_URL)

    if films :    
        return False, [set(films)-set(films_found), emails]     
    else:
        logging.getLogger('imax').info('Found all films, stopping.')
        return True

def send_email(receivers, subject, body):
    msg = ("From: %s\r\nTo: %s\r\nSubject: %s\r\n\r\n%s" 
        %(_SENDER, receivers, subject, body))
    server = smtplib.SMTP(_SMTP_SERVER_URL)  
    server.starttls()  
    server.login(_SENDER,_SMTP_SERVER_PWD)  
    server.sendmail(_SENDER, receivers, msg)  
    server.quit()


def main():
    from optparse import OptionParser
    from string import strip

    parser = OptionParser("usage: %prog -f 'Titanic, Lady From Shanghai' [-d 24 -e 'me@me.com, you@me.com']")
    parser.add_option("-e", "--emails",
                      dest="emails", type="string",
                      help="email addresses to be notified.")
  
    parser.add_option("-f", "--films",
                      dest="films", type="string",
                      help="film names to search for.")
  
    parser.add_option("-d", "--delay",
                      dest="delay", type="int", default=12,
                      help="time interval for searches. In hours.")

    parser.add_option("-q", "--quiet",
                      action="store_true", dest="quiet", default=False,
                      help="don't print status messages to stdout")

    (options, args) = parser.parse_args()
  
    emails = map(strip, options.emails.split(',')) if options.emails else None
    films = map(strip, options.films.split(',')) if options.films else None
    
    formatter = logging.Formatter(
    	'%(asctime)-6s: %(name)s - %(levelname)s - %(message)s')

    if not options.quiet:
        consoleLogger = logging.StreamHandler()
        consoleLogger.setFormatter(formatter)
        logging.getLogger('imax').addHandler(consoleLogger)
        logging.getLogger('imax').setLevel(logging.DEBUG)
    
    delayedCall(checkBFI, options.delay, films, emails )


if __name__ == '__main__':
    main()