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54 | <H3><A NAME="SECTION0014223000000000000000"> | |
55 | 12.2.2.3 Additional notes</A> | |
56 | </H3> | |
57 | ||
58 | <P> | |
59 | Here are some notes on the parsing semantics: | |
60 | ||
61 | <P> | |
62 | ||
63 | <UL> | |
64 | <LI>Most non-<span class="mimetype">multipart</span> type messages are parsed as a single | |
65 | message object with a string payload. These objects will return | |
66 | <code>False</code> for <tt class="method">is_multipart()</tt>. Their | |
67 | <tt class="method">get_payload()</tt> method will return a string object. | |
68 | ||
69 | <P> | |
70 | </LI> | |
71 | <LI>All <span class="mimetype">multipart</span> type messages will be parsed as a | |
72 | container message object with a list of sub-message objects for | |
73 | their payload. The outer container message will return | |
74 | <code>True</code> for <tt class="method">is_multipart()</tt> and their | |
75 | <tt class="method">get_payload()</tt> method will return the list of | |
76 | <tt class="class">Message</tt> subparts. | |
77 | ||
78 | <P> | |
79 | </LI> | |
80 | <LI>Most messages with a content type of <span class="mimetype">message/*</span> | |
81 | (e.g. <span class="mimetype">message/delivery-status</span> and | |
82 | <span class="mimetype">message/rfc822</span>) will also be parsed as container | |
83 | object containing a list payload of length 1. Their | |
84 | <tt class="method">is_multipart()</tt> method will return <code>True</code>. The | |
85 | single element in the list payload will be a sub-message object. | |
86 | ||
87 | <P> | |
88 | </LI> | |
89 | <LI>Some non-standards compliant messages may not be internally consistent | |
90 | about their <span class="mimetype">multipart</span>-edness. Such messages may have a | |
91 | <span class="mailheader">Content-Type:</span> header of type <span class="mimetype">multipart</span>, but their | |
92 | <tt class="method">is_multipart()</tt> method may return <code>False</code>. If such | |
93 | messages were parsed with the <tt class="class">FeedParser</tt>, they will have an | |
94 | instance of the <tt class="class">MultipartInvariantViolationDefect</tt> class in their | |
95 | <var>defects</var> attribute list. See <tt class="module"><a href="module-email.Errors.html">email.Errors</a></tt> for | |
96 | details. | |
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136 | <span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span> | |
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