#!/usr/bin/env python
     #
     # Copyright 2007 Doug Hellmann.
     #
     """Printing help with optparse.  
     
     Call this script with --help on the command line.
     
     """
     #end_pymotw_header
     
     import optparse
     
     parser = optparse.OptionParser()
     parser.add_option('--no-foo', action="store_true", 
                       default=False, 
                       dest="foo",
                       help="Turn off foo",
                       )
     parser.add_option('--with', action="store", help="Include optional feature",
                       metavar='feature_NAME')
     
     parser.parse_args()