#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2008 Doug Hellmann All rights reserved.
     #
     """Adding items to a deque.
     """
     
     __version__ = "$Id$"
     #end_pymotw_header
     
     import collections
     
     # Add to the right
     d = collections.deque()
     d.extend('abcdefg')
     print 'extend    :', d
     d.append('h')
     print 'append    :', d
     
     # Add to the left
     d = collections.deque()
     d.extendleft('abcdefg')
     print 'extendleft:', d
     d.appendleft('h')
     print 'appendleft:', d