| # Copyright (C) 2001-2006 Python Software Foundation | 
 | # Author: Barry Warsaw | 
 | # Contact: email-sig@python.org | 
 |  | 
 | """Base class for MIME specializations.""" | 
 |  | 
 | __all__ = ['MIMEBase'] | 
 |  | 
 | from email import message | 
 |  | 
 |  | 
 |  | 
 | class MIMEBase(message.Message): | 
 |     """Base class for MIME specializations.""" | 
 |  | 
 |     def __init__(self, _maintype, _subtype, **_params): | 
 |         """This constructor adds a Content-Type: and a MIME-Version: header. | 
 |  | 
 |         The Content-Type: header is taken from the _maintype and _subtype | 
 |         arguments.  Additional parameters for this header are taken from the | 
 |         keyword arguments. | 
 |         """ | 
 |         message.Message.__init__(self) | 
 |         ctype = '%s/%s' % (_maintype, _subtype) | 
 |         self.add_header('Content-Type', ctype, **_params) | 
 |         self['MIME-Version'] = '1.0' |