#!/usr/bin/env python
     #
     # Copyright 2007 Doug Hellmann.
     #
     #
     #                         All Rights Reserved
     #
     # Permission to use, copy, modify, and distribute this software and
     # its documentation for any purpose and without fee is hereby
     # granted, provided that the above copyright notice appear in all
     # copies and that both that copyright notice and this permission
     # notice appear in supporting documentation, and that the name of Doug
     # Hellmann not be used in advertising or publicity pertaining to
     # distribution of the software without specific, written prior
     # permission.
     #
     # DOUG HELLMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     # INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
     # NO EVENT SHALL DOUG HELLMANN BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     # CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
     # OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
     # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
     # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     #
     
     """Example of os.walk() implementing a simple recursive directory listing.
     
     """
     
     __module_id__ = "$Id$"
     #end_pymotw_header
     
     import os, sys
     
     # If we are not given a path to list, use /tmp
     if len(sys.argv) == 1:
         root = '/tmp'
     else:
         root = sys.argv[1]
     
     for dir_name, sub_dirs, files in os.walk(root):
         print '\n', dir_name
         # Make the subdirectory names stand out with /
         sub_dirs = [ '%s/' % n for n in sub_dirs ]
         # Mix the directory contents together
         contents = sub_dirs + files
         contents.sort()
         # Show the contents
         for c in contents:
             print '\t%s' % c