#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2010 Doug Hellmann.  All rights reserved.
     #
     """Updating counts.
     """
     #end_pymotw_header
     
     import collections
     
     c = collections.Counter('abcdaab')
     
     for letter in 'abcde':
         print '%s : %d' % (letter, c[letter])