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<H2><A NAME="SECTION006620000000000000000"> </A>
<BR>
4.6.2 Field class
</H2>
<P>
<dl><dt><b><span class="typelabel">class</span> <a name="l2h-169"><tt class="class">Field</tt></a></b>()
<dd>
This class is used internally by <tt class="class">FieldStorage</tt> and is not
meant to be instantiated by the user. Each instance of a <tt class="class">Field</tt>
class represents an HTML Form input.
<P>
<tt class="class">Field</tt> instances have the following attributes:
<P>
<dl><dt><b><a name="l2h-170"><tt class="member">name</tt></a></b>
<dd>
The input name.
</dl>
<P>
<dl><dt><b><a name="l2h-171"><tt class="member">value</tt></a></b>
<dd>
The input value. This attribute can be used to read data from a file
upload as well, but one has to exercise caution when dealing with
large files since when accessed via <tt class="member">value</tt>, the whole file is
read into memory.
</dl>
<P>
<dl><dt><b><a name="l2h-172"><tt class="member">file</tt></a></b>
<dd>
This is a file object. For file uploads it points to a temporary file.
For simple values, it is a <tt class="class">StringIO</tt> object, so you can read
simple string values via this attribute instead of using the <tt class="member">value</tt>
attribute as well.
</dl>
<P>
<dl><dt><b><a name="l2h-173"><tt class="member">filename</tt></a></b>
<dd>
The name of the file as provided by the client.
</dl>
<P>
<dl><dt><b><a name="l2h-174"><tt class="member">type</tt></a></b>
<dd>
The content-type for this input as provided by the client.
</dl>
<P>
<dl><dt><b><a name="l2h-175"><tt class="member">type_options</tt></a></b>
<dd>
This is what follows the actual content type in the <code>content-type</code>
header provided by the client, if anything. This is a dictionary.
</dl>
<P>
<dl><dt><b><a name="l2h-176"><tt class="member">disposition</tt></a></b>
<dd>
The value of the first part of the <code>content-disposition</code> header.
</dl>
<P>
<dl><dt><b><a name="l2h-177"><tt class="member">disposition_options</tt></a></b>
<dd>
The second part (if any) of the <code>content-disposition</code> header in
the form of a dictionary.
</dl>
<P>
<div class="seealso">
<p class="heading"><b>See Also:</b></p>
<dl compact class="seerfc">
<dt><a href="http://www.faqs.org/rfcs/rfc1867.html"
title="Form-based File Upload in HTML"
>RFC 1867, <em>Form-based File Upload in HTML</em></a>
<dd>for a description of
form-based file uploads
</dl>
</div>
</dl>
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<span class="release-info">Release 3.1.0a, documentation updated on August 26, 2003.</span>
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