# Copyright (C) 2001-2006 Python Software Foundation
# Author: Barry Warsaw
# Contact: email-sig@python.org

"""Base class for MIME specializations."""

__all__ = ['MIMEBase']

import email.policy

from email import message



class MIMEBase(message.Message):
 """Base class for MIME specializations."""

 def __init__(self, _maintype, _subtype, *, policy=None, **_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.
 """
 if policy is None:
 policy = email.policy.compat32
 message.Message.__init__(self, policy=policy)
 ctype = '%s/%s' % (_maintype, _subtype)
 self.add_header('Content-Type', ctype, **_params)
 self['MIME-Version'] = '1.0'