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# Copyright (C) 2002-2006 Python Software Foundation
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# Author: Barry Warsaw
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# Contact: email-sig@python.org
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"""Base class for MIME multipart/* type messages."""
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__all__ = ['MIMEMultipart']
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from email.mime.base import MIMEBase
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class MIMEMultipart(MIMEBase):
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"""Base class for MIME multipart/* type messages."""
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def __init__(self, _subtype='mixed', boundary=None, _subparts=None,
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**_params):
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"""Creates a multipart/* type message.
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By default, creates a multipart/mixed message, with proper
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Content-Type and MIME-Version headers.
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_subtype is the subtype of the multipart content type, defaulting to
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`mixed'.
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boundary is the multipart boundary string. By default it is
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calculated as needed.
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_subparts is a sequence of initial subparts for the payload. It
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must be an iterable object, such as a list. You can always
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attach new subparts to the message by using the attach() method.
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Additional parameters for the Content-Type header are taken from the
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keyword arguments (or passed into the _params argument).
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"""
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MIMEBase.__init__(self, 'multipart', _subtype, **_params)
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# Initialise _payload to an empty list as the Message superclass's
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# implementation of is_multipart assumes that _payload is a list for
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# multipart messages.
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self._payload = []
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if _subparts:
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for p in _subparts:
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self.attach(p)
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if boundary:
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self.set_boundary(boundary)
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