devdocs/python~3.12/c-api%2Fnone.html


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 <span id="noneobject"></span><h1>The None Object</h1> <p id="index-0">Note that the <a class="reference internal" href="type#c.PyTypeObject" title="PyTypeObject"><code>PyTypeObject</code></a> for <code>None</code> is not directly exposed in the Python/C API. Since <code>None</code> is a singleton, testing for object identity (using <code>==</code> in C) is sufficient. There is no <code>PyNone_Check()</code> function for the same reason.</p> <dl class="c var"> <dt class="sig sig-object c" id="c.Py_None">
<code>PyObject *Py_None</code> </dt> <dd>
<p>The Python <code>None</code> object, denoting lack of value. This object has no methods and is <a class="reference external" href="https://peps.python.org/pep-0683/">immortal</a>.</p> </dd>
</dl> <div class="versionchanged"> <p><span class="versionmodified changed">Changed in version 3.12: </span><a class="reference internal" href="#c.Py_None" title="Py_None"><code>Py_None</code></a> is immortal.</p> </div> <dl class="c macro"> <dt class="sig sig-object c" id="c.Py_RETURN_NONE">
<code>Py_RETURN_NONE</code> </dt> <dd>
<p>Return <a class="reference internal" href="#c.Py_None" title="Py_None"><code>Py_None</code></a> from a function.</p> </dd>
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