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 IMAX.
You can search for multiple films and notify different email addresses.
'''

__author__ = 'Sergio Garcez'

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

#make inside variable 'private' via underscore ... this matter when somebody do a from script import *
_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 delay(function,delay=24,**kwargs):
     result, kwargs  = function(*args,**kwargs)
     if delay > 0 and not result :
            _s = sched.scheduler(time.time, time.sleep)
            s.enter(delay, 1, delay, (function,delay,**kwargs))
            s.run()



def checkBFI(films, emails=None):
    #no parenthesis
    if not films:
        #check the doc if Attribute Error is maybe better
        raise ValueError("films list must exist")

    f = urllib.urlopen(BFI_URL) 
    soup = BeautifulSoup(f)
    tags = soup.select(".view-content.view-content-taxonomy-term > a")

    #debug or verbose mode 
    print('\nSearching for: \n %s' % ('\n '.join(films)) )
    
    films_found  = [film for film in films for tag in tags if film.lower() in tag.text.lower()]
            
                
    #removed the line about removing the film found in the list.. doesnt bring much and restrict some
    # optimistation
    if films_found:
        print('\nFound %s!' % ", ".joing(films_found))
    
    #digest email, i hate receive loads email       
    if emails :
              print('\nEmailing:\n %s' % '\n '.join(emails))
              send_email(emails, 'Tickets are now available for: %s !' % films_found, 
                        'Go get them: \n %s' % BFI_URL)
              #use loggin.Debug for this type of print maybe ?
              #print('Email sent.')
  
    #no check on length needed and no parathese
    if films :    
        return False, [set(films)-set(films_found), emails, delay]     
    else:
        print('\nFound all films, stopping.')
        return True, [[], emails, delay]  


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.")

    (options, args) = parser.parse_args()
    
#if you are using logic base on iterator avoid a default value as None , otherwise all loop will fail
    emails = map(strip, options.emails.split(',')) if options.emails else []
    films = map(strip, options.films.split(',')) if options.films else []
    delay = options.delay * 60 * 60
    # splitted delay and checkfilms to be reusable 
    delay(checkBFIfilms,delay, films=films, emails=emails )

if __name__ == '__main__':
    main()

setup.py

#!/usr/bin/env python


from setuptools import setup, find_packages


long_description = """ """

setup(
    name='imax',
    version='0.1',
    description='short description',
    long_description=long_description,
    author='Sergio Garcez',
    author_email='xxx@xxx.com',
    url='https://yoururl',
    packages=find_packages(),
    license = "MIT|BSD|",
    entry_points={
        'console_scripts': [
            'imax = imax.imax:main',
        ]
    },
    install_requires=[
        'BeautifulSoup4',
    
    ]

)