#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2008 Doug Hellmann All rights reserved.
     #
     """Find the prefix string common to a group of paths.
     """
     
     __version__ = "$Id$"
     #end_pymotw_header
     
     import os.path
     
     paths = ['/one/two/three/four',
              '/one/two/threefold',
              '/one/two/three/',
              ]
     print paths
     print os.path.commonprefix(paths)