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