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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-31">There are a few functions specific to Python functions.</p>
<dl class="ctype">
<dt id="PyFunctionObject">
<tt class="descname">PyFunctionObject</tt><a class="headerlink" href="#PyFunctionObject" title="Permalink to this definition">¶</a></dt>
<dd>The C structure used for functions.</dd></dl>
<dl class="cvar">
<dt id="PyFunction_Type">
<a title="PyTypeObject" class="reference external" href="type.html#PyTypeObject">PyTypeObject</a> <tt class="descname">PyFunction_Type</tt><a class="headerlink" href="#PyFunction_Type" title="Permalink to this definition">¶</a></dt>
<dd><p id="index-32">This is an instance of <a title="PyTypeObject" class="reference external" href="type.html#PyTypeObject"><tt class="xref docutils literal"><span class="pre">PyTypeObject</span></tt></a> and represents the Python function
type. It is exposed to Python programmers as <tt class="docutils literal"><span class="pre">types.FunctionType</span></tt>.</p>
</dd></dl>
<dl class="cfunction">
<dt id="PyFunction_Check">
int <tt class="descname">PyFunction_Check</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *o</em><big>)</big><a class="headerlink" href="#PyFunction_Check" title="Permalink to this definition">¶</a></dt>
<dd>Return true if <em>o</em> is a function object (has type <a title="PyFunction_Type" class="reference internal" href="#PyFunction_Type"><tt class="xref docutils literal"><span class="pre">PyFunction_Type</span></tt></a>).
The parameter must not be <em>NULL</em>.</dd></dl>
<dl class="cfunction">
<dt id="PyFunction_New">
<a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a>* <tt class="descname">PyFunction_New</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *code</em>, <a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *globals</em><big>)</big><a class="headerlink" href="#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, name and <em>__module__</em> are retrieved from the code
object, the argument defaults and closure are set to <em>NULL</em>.</p>
</dd></dl>
<dl class="cfunction">
<dt id="PyFunction_GetCode">
<a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a>* <tt class="descname">PyFunction_GetCode</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em><big>)</big><a class="headerlink" href="#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="cfunction">
<dt id="PyFunction_GetGlobals">
<a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a>* <tt class="descname">PyFunction_GetGlobals</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em><big>)</big><a class="headerlink" href="#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="cfunction">
<dt id="PyFunction_GetModule">
<a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a>* <tt class="descname">PyFunction_GetModule</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em><big>)</big><a class="headerlink" href="#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="cfunction">
<dt id="PyFunction_GetDefaults">
<a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a>* <tt class="descname">PyFunction_GetDefaults</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em><big>)</big><a class="headerlink" href="#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="cfunction">
<dt id="PyFunction_SetDefaults">
int <tt class="descname">PyFunction_SetDefaults</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em>, <a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *defaults</em><big>)</big><a class="headerlink" href="#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 title="exceptions.SystemError" class="reference external" href="../library/exceptions.html#exceptions.SystemError"><tt class="xref docutils literal"><span class="pre">SystemError</span></tt></a> and returns <tt class="docutils literal"><span class="pre">-1</span></tt> on failure.</p>
</dd></dl>
<dl class="cfunction">
<dt id="PyFunction_GetClosure">
<a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a>* <tt class="descname">PyFunction_GetClosure</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em><big>)</big><a class="headerlink" href="#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="cfunction">
<dt id="PyFunction_SetClosure">
int <tt class="descname">PyFunction_SetClosure</tt><big>(</big><a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *op</em>, <a title="PyObject" class="reference external" href="structures.html#PyObject">PyObject</a><em> *closure</em><big>)</big><a class="headerlink" href="#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 title="exceptions.SystemError" class="reference external" href="../library/exceptions.html#exceptions.SystemError"><tt class="xref docutils literal"><span class="pre">SystemError</span></tt></a> and returns <tt class="docutils literal"><span class="pre">-1</span></tt> on failure.</p>
</dd></dl>
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