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<title>7.5.6 Descriptor Objects </title>
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<H2><A NAME="SECTION009560000000000000000"></A><A NAME="descriptor-objects"></A>
<BR>
7.5.6 Descriptor Objects
</H2>

<P>
``Descriptors'' are objects that describe some attribute of an object.
They are found in the dictionary of type objects.

<P>
<dl><dt>PyTypeObject <b><tt id='l2h-703' xml:id='l2h-703' class="cdata">PyProperty_Type</tt></b></dt>
<dd>
  The type object for the built-in descriptor types.

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-704' xml:id='l2h-704' class="cfunction">PyDescr_NewGetSet</tt></b>(</nobr></td><td>PyTypeObject *<var>type</var>,
                                                PyGetSetDef *<var>getset</var>)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-705' xml:id='l2h-705' class="cfunction">PyDescr_NewMember</tt></b>(</nobr></td><td>PyTypeObject *<var>type</var>,
                                                PyMemberDef *<var>meth</var>)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-706' xml:id='l2h-706' class="cfunction">PyDescr_NewMethod</tt></b>(</nobr></td><td>PyTypeObject *<var>type</var>,
                                                PyMethodDef *<var>meth</var>)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-707' xml:id='l2h-707' class="cfunction">PyDescr_NewWrapper</tt></b>(</nobr></td><td>PyTypeObject *<var>type</var>,
                                                 struct wrapperbase *<var>wrapper</var>,
                                                 void *<var>wrapped</var>)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-708' xml:id='l2h-708' class="cfunction">PyDescr_NewClassMethod</tt></b>(</nobr></td><td>PyTypeObject *<var>type</var>,
                                                     PyMethodDef *<var>method</var>)</td></tr></table></dt>
<dd>

<span class="versionnote">New in version 2.3.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>int&nbsp;<b><tt id='l2h-709' xml:id='l2h-709' class="cfunction">PyDescr_IsData</tt></b>(</nobr></td><td>PyObject *<var>descr</var>)</td></tr></table></dt>
<dd>
  Return true if the descriptor objects <var>descr</var> describes a data
  attribute, or false if it describes a method.  <var>descr</var> must be a
  descriptor object; there is no error checking.

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-710' xml:id='l2h-710' class="cfunction">PyWrapper_New</tt></b>(</nobr></td><td>PyObject *, PyObject *)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>

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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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