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<div class="section" id="function-objects">
<span id="id1"></span><h1>Function Objects<a class="headerlink" href="#function-objects" title="Permalink to this headline">¶</a></h1>
<p id="index-0">There are a few functions specific to Python functions.</p>
<dl class="type">
<dt id="c.PyFunctionObject">
<code class="descname">PyFunctionObject</code><a class="headerlink" href="#c.PyFunctionObject" title="Permalink to this definition">¶</a></dt>
<dd><p>The C structure used for functions.</p>
</dd></dl>
<dl class="var">
<dt id="c.PyFunction_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a> <code class="descname">PyFunction_Type</code><a class="headerlink" href="#c.PyFunction_Type" title="Permalink to this definition">¶</a></dt>
<dd><p id="index-1">This is an instance of <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><code class="xref c c-type docutils literal"><span class="pre">PyTypeObject</span></code></a> and represents the Python function
type. It is exposed to Python programmers as <code class="docutils literal"><span class="pre">types.FunctionType</span></code>.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_Check">
int <code class="descname">PyFunction_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_Check" title="Permalink to this definition">¶</a></dt>
<dd><p>Return true if <em>o</em> is a function object (has type <a class="reference internal" href="#c.PyFunction_Type" title="PyFunction_Type"><code class="xref c c-data docutils literal"><span class="pre">PyFunction_Type</span></code></a>).
The parameter must not be <em>NULL</em>.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_New">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_New</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *code</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *globals</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_New" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>Return a new function object associated with the code object <em>code</em>. <em>globals</em>
must be a dictionary with the global variables accessible to the function.</p>
<p>The function’s docstring and name are retrieved from the code object. <em>__module__</em>
is retrieved from <em>globals</em>. The argument defaults, annotations and closure are
set to <em>NULL</em>. <em>__qualname__</em> is set to the same value as the function’s name.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_NewWithQualName">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_NewWithQualName</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *code</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *globals</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *qualname</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_NewWithQualName" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>As <a class="reference internal" href="#c.PyFunction_New" title="PyFunction_New"><code class="xref c c-func docutils literal"><span class="pre">PyFunction_New()</span></code></a>, but also allows setting the function object’s
<code class="docutils literal"><span class="pre">__qualname__</span></code> attribute. <em>qualname</em> should be a unicode object or NULL;
if NULL, the <code class="docutils literal"><span class="pre">__qualname__</span></code> attribute is set to the same value as its
<code class="docutils literal"><span class="pre">__name__</span></code> attribute.</p>
<div class="versionadded">
<p><span class="versionmodified">New in version 3.3.</span></p>
</div>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_GetCode">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_GetCode</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetCode" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Return the code object associated with the function object <em>op</em>.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_GetGlobals">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_GetGlobals</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetGlobals" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Return the globals dictionary associated with the function object <em>op</em>.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_GetModule">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_GetModule</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetModule" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Return the <em>__module__</em> attribute of the function object <em>op</em>. This is normally
a string containing the module name, but can be set to any other object by
Python code.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_GetDefaults">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_GetDefaults</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetDefaults" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Return the argument default values of the function object <em>op</em>. This can be a
tuple of arguments or <em>NULL</em>.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_SetDefaults">
int <code class="descname">PyFunction_SetDefaults</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *defaults</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_SetDefaults" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the argument default values for the function object <em>op</em>. <em>defaults</em> must be
<em>Py_None</em> or a tuple.</p>
<p>Raises <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal"><span class="pre">SystemError</span></code></a> and returns <code class="docutils literal"><span class="pre">-1</span></code> on failure.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_GetClosure">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyFunction_GetClosure</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetClosure" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Return the closure associated with the function object <em>op</em>. This can be <em>NULL</em>
or a tuple of cell objects.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_SetClosure">
int <code class="descname">PyFunction_SetClosure</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *closure</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_SetClosure" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the closure associated with the function object <em>op</em>. <em>closure</em> must be
<em>Py_None</em> or a tuple of cell objects.</p>
<p>Raises <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal"><span class="pre">SystemError</span></code></a> and returns <code class="docutils literal"><span class="pre">-1</span></code> on failure.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_GetAnnotations">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a> *<code class="descname">PyFunction_GetAnnotations</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetAnnotations" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the annotations of the function object <em>op</em>. This can be a
mutable dictionary or <em>NULL</em>.</p>
</dd></dl>
<dl class="function">
<dt id="c.PyFunction_SetAnnotations">
int <code class="descname">PyFunction_SetAnnotations</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *annotations</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_SetAnnotations" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the annotations for the function object <em>op</em>. <em>annotations</em>
must be a dictionary or <em>Py_None</em>.</p>
<p>Raises <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal"><span class="pre">SystemError</span></code></a> and returns <code class="docutils literal"><span class="pre">-1</span></code> on failure.</p>
</dd></dl>
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