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<span id="noneobject"></span><h1><code class="docutils literal notranslate"><span class="pre">None</span></code> 物件<a class="headerlink" href="#the-none-object" title="連結到這個標頭">¶</a></h1>
<p id="index-0">Note that the <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyTypeObject</span></code></a> for <code class="docutils literal notranslate"><span class="pre">None</span></code> is not directly exposed in the
Python/C API. Since <code class="docutils literal notranslate"><span class="pre">None</span></code> is a singleton, testing for object identity (using
<code class="docutils literal notranslate"><span class="pre">==</span></code> in C) is sufficient. There is no <code class="xref c c-func docutils literal notranslate"><span class="pre">PyNone_Check()</span></code> function for the
same reason.</p>
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">Py_None</span></span></span><a class="headerlink" href="#c.Py_None" title="連結到這個定義">¶</a><br /></dt>
<dd><p>The Python <code class="docutils literal notranslate"><span class="pre">None</span></code> object, denoting lack of value. This object has no methods
and is <a class="reference internal" href="../glossary.html#term-immortal"><span class="xref std std-term">immortal</span></a>.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.12 版的變更: </span><a class="reference internal" href="#c.Py_None" title="Py_None"><code class="xref c c-data docutils literal notranslate"><span class="pre">Py_None</span></code></a> 為<a class="reference internal" href="../glossary.html#term-immortal"><span class="xref std std-term">不滅的 (immortal)</span></a>。</p>
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<dd><p>Return <a class="reference internal" href="#c.Py_None" title="Py_None"><code class="xref c c-data docutils literal notranslate"><span class="pre">Py_None</span></code></a> from a function.</p>
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