import re
from operator import itemgetter
 
def parser_logfile(logfile):
 pattern = (r''
   '(\d+.\d+.\d+.\d+)\s-\s-\s' #IP address
   '\[(.+)\]\s' #datetime
   '"GET\s(.+)\s\w+/.+"\s' #requested file
   '(\d+)\s' #status
   '(\d+)\s' #bandwidth
   '"(.+)"\s' #referrer
   '"(.+)"' #user agent
  )
 fi = open(logfile, 'r')
 url_list = []
 for line in fi:
  url_list.append(re.findall(pattern, line))
 fi.close()
 return url_list
 
def parser_urllist(url_list):
 urls = []
 for url in url_list:
  for r in url: 
   urls.append(r[5])
 return urls
 
def get_urldict(urls):
 d = {}
 for url in urls:
  d[url] = d.get(url,0)+1
 return d
 
def url_count(logfile):
 url_list = parser_logfile(logfile)
 urls = parser_urllist(url_list)
 totals = get_urldict(urls)
 return totals
 
if __name__ == '__main__':
 urls_with_counts = url_count('example.log')
 sorted_by_count = sorted(urls_with_counts.items(), key=itemgetter(1), reverse=True)
 print(sorted_by_count)

>>> from operator import itemgetter
>>> a=[('b',2),('a',1),('c',0)] 
>>> s=sorted(a,key=itemgetter(1))
>>> s
[('c', 0), ('a', 1), ('b', 2)]
>>> s=sorted(a,key=itemgetter(0))
>>> s
[('a', 1), ('b', 2), ('c', 0)]

[('http://domain.com/htm_data/7/1206/758536.html', 141), ('http://domain.com/?q=node&page=12', 3), ('http://website.net/htm_data/7/1206/758536.html', 1)]