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4710c53d 1# Copyright (C) 2002-2006 Python Software Foundation\r
2# Author: Barry Warsaw\r
3# Contact: email-sig@python.org\r
4\r
5"""Base class for MIME multipart/* type messages."""\r
6\r
7__all__ = ['MIMEMultipart']\r
8\r
9from email.mime.base import MIMEBase\r
10\r
11\r
12\f\r
13class MIMEMultipart(MIMEBase):\r
14 """Base class for MIME multipart/* type messages."""\r
15\r
16 def __init__(self, _subtype='mixed', boundary=None, _subparts=None,\r
17 **_params):\r
18 """Creates a multipart/* type message.\r
19\r
20 By default, creates a multipart/mixed message, with proper\r
21 Content-Type and MIME-Version headers.\r
22\r
23 _subtype is the subtype of the multipart content type, defaulting to\r
24 `mixed'.\r
25\r
26 boundary is the multipart boundary string. By default it is\r
27 calculated as needed.\r
28\r
29 _subparts is a sequence of initial subparts for the payload. It\r
30 must be an iterable object, such as a list. You can always\r
31 attach new subparts to the message by using the attach() method.\r
32\r
33 Additional parameters for the Content-Type header are taken from the\r
34 keyword arguments (or passed into the _params argument).\r
35 """\r
36 MIMEBase.__init__(self, 'multipart', _subtype, **_params)\r
37\r
38 # Initialise _payload to an empty list as the Message superclass's\r
39 # implementation of is_multipart assumes that _payload is a list for\r
40 # multipart messages.\r
41 self._payload = []\r
42\r
43 if _subparts:\r
44 for p in _subparts:\r
45 self.attach(p)\r
46 if boundary:\r
47 self.set_boundary(boundary)\r