Python Challenge 04 Solution

gist: https://gist.github.com/genesislive/5097515

#!/usr/bin/env python# -*- coding: UTF-8 -*- # http://www.pythonchallenge.com/pc/def/linkedlist.php import urllib, re uri = 'http://www.pythonchallenge.com/pc/def/linkedlist.php?nothing=%s'nothing = '12345' # '8022'pattern = 'and the next nothing is (\d+)' while True:    try:        content = urllib.urlopen(uri % nothing).read()        print content        nothing = re.search(pattern, content).group(1)        # print nothing    except AttributeError:        # AttributeError: 'NoneType' object has no attribute 'group'                # if you see 'Yes. Divide by two and keep going.', just div        # the latest nothing by 2 and try again.                break print nothing