#!/usr/bin/env python
     # encoding: utf-8
     #
     # Copyright (c) 2008 Doug Hellmann All rights reserved.
     #
     """
     """
     
     __version__ = "$Id$"
     #end_pymotw_header
     
     import string
     
     class MyTemplate(string.Template):
         delimiter = '%'
         idpattern = '[a-z]+_[a-z]+'
     
     t = MyTemplate('%% %with_underscore %notunderscored')
     d = { 'with_underscore':'replaced', 
           'notunderscored':'not replaced',
           }
     
     print t.safe_substitute(d)