1  # Copyright (C) 2001-2006 Python Software Foundation
       2  # Author: Barry Warsaw
       3  # Contact: email-sig@python.org
       4  
       5  """Base class for MIME specializations."""
       6  
       7  __all__ = ['MIMEBase']
       8  
       9  import email.policy
      10  
      11  from email import message
      12  
      13  
      14  class ESC[4;38;5;81mMIMEBase(ESC[4;38;5;149mmessageESC[4;38;5;149m.ESC[4;38;5;149mMessage):
      15      """Base class for MIME specializations."""
      16  
      17      def __init__(self, _maintype, _subtype, *, policy=None, **_params):
      18          """This constructor adds a Content-Type: and a MIME-Version: header.
      19  
      20          The Content-Type: header is taken from the _maintype and _subtype
      21          arguments.  Additional parameters for this header are taken from the
      22          keyword arguments.
      23          """
      24          if policy is None:
      25              policy = email.policy.compat32
      26          message.Message.__init__(self, policy=policy)
      27          ctype = '%s/%s' % (_maintype, _subtype)
      28          self.add_header('Content-Type', ctype, **_params)
      29          self['MIME-Version'] = '1.0'