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16<title>12.8.1 MimeWriter Objects </title>
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54<H2><A NAME="SECTION0014810000000000000000"></A><A NAME="MimeWriter-objects"></A>
55<BR>
5612.8.1 MimeWriter Objects
57</H2>
58
59<P>
60<tt class="class">MimeWriter</tt> instances have the following methods:
61
62<P>
63<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
64 <td><nobr><b><tt id='l2h-4045' xml:id='l2h-4045' class="method">addheader</tt></b>(</nobr></td>
65 <td><var>key, value</var><big>[</big><var>, prefix</var><big>]</big><var></var>)</td></tr></table></dt>
66<dd>
67Add a header line to the MIME message. The <var>key</var> is the name of
68the header, where the <var>value</var> obviously provides the value of the
69header. The optional argument <var>prefix</var> determines where the header
70is inserted; "<tt class="samp">0</tt>" means append at the end, "<tt class="samp">1</tt>" is insert at
71the start. The default is to append.
72</dl>
73
74<P>
75<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
76 <td><nobr><b><tt id='l2h-4046' xml:id='l2h-4046' class="method">flushheaders</tt></b>(</nobr></td>
77 <td><var></var>)</td></tr></table></dt>
78<dd>
79Causes all headers accumulated so far to be written out (and
80forgotten). This is useful if you don't need a body part at all,
81e.g. for a subpart of type <span class="mimetype">message/rfc822</span> that's (mis)used
82to store some header-like information.
83</dl>
84
85<P>
86<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
87 <td><nobr><b><tt id='l2h-4047' xml:id='l2h-4047' class="method">startbody</tt></b>(</nobr></td>
88 <td><var>ctype</var><big>[</big><var>, plist</var><big>[</big><var>, prefix</var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt>
89<dd>
90Returns a file-like object which can be used to write to the
91body of the message. The content-type is set to the provided
92<var>ctype</var>, and the optional parameter <var>plist</var> provides
93additional parameters for the content-type declaration. <var>prefix</var>
94functions as in <tt class="method">addheader()</tt> except that the default is to
95insert at the start.
96</dl>
97
98<P>
99<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
100 <td><nobr><b><tt id='l2h-4048' xml:id='l2h-4048' class="method">startmultipartbody</tt></b>(</nobr></td>
101 <td><var>subtype</var><big>[</big><var>,
102 boundary</var><big>[</big><var>, plist</var><big>[</big><var>, prefix</var><big>]</big><var></var><big>]</big><var></var><big>]</big><var></var>)</td></tr></table></dt>
103<dd>
104Returns a file-like object which can be used to write to the
105body of the message. Additionally, this method initializes the
106multi-part code, where <var>subtype</var> provides the multipart subtype,
107<var>boundary</var> may provide a user-defined boundary specification, and
108<var>plist</var> provides optional parameters for the subtype.
109<var>prefix</var> functions as in <tt class="method">startbody()</tt>. Subparts should be
110created using <tt class="method">nextpart()</tt>.
111</dl>
112
113<P>
114<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
115 <td><nobr><b><tt id='l2h-4049' xml:id='l2h-4049' class="method">nextpart</tt></b>(</nobr></td>
116 <td><var></var>)</td></tr></table></dt>
117<dd>
118Returns a new instance of <tt class="class">MimeWriter</tt> which represents an
119individual part in a multipart message. This may be used to write the
120part as well as used for creating recursively complex multipart
121messages. The message must first be initialized with
122<tt class="method">startmultipartbody()</tt> before using <tt class="method">nextpart()</tt>.
123</dl>
124
125<P>
126<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
127 <td><nobr><b><tt id='l2h-4050' xml:id='l2h-4050' class="method">lastpart</tt></b>(</nobr></td>
128 <td><var></var>)</td></tr></table></dt>
129<dd>
130This is used to designate the last part of a multipart message, and
131should <em>always</em> be used when writing multipart messages.
132</dl>
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