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<section id="the-none-object">
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<span id="noneobject"></span><h1><code class="docutils literal notranslate"><span class="pre">None</span></code> 对象<a class="headerlink" href="#the-none-object" title="永久链接至标题">¶</a></h1>
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<p id="index-0">请注意， <code class="docutils literal notranslate"><span class="pre">None</span></code> 的 <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> 不会直接在 Python / C API 中公开。 由于 <code class="docutils literal notranslate"><span class="pre">None</span></code> 是单例，测试对象标识（在C中使用 <code class="docutils literal notranslate"><span class="pre">==</span></code> ）就足够了。 由于同样的原因，没有 <code class="xref c c-func docutils literal notranslate"><span class="pre">PyNone_Check()</span></code> 函数。</p>
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<dt id="c.Py_None">
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">Py_None</code><a class="headerlink" href="#c.Py_None" title="永久链接至目标">¶</a></dt>
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<dd><p>Python <code class="docutils literal notranslate"><span class="pre">None</span></code> 对象，表示缺乏值。 这个对象没有方法。 它需要像引用计数一样处理任何其他对象。</p>
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<code class="sig-name descname">Py_RETURN_NONE</code><a class="headerlink" href="#c.Py_RETURN_NONE" title="永久链接至目标">¶</a></dt>
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<dd><p>正确处理来自C函数内的 <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> 返回（也就是说，增加 <code class="docutils literal notranslate"><span class="pre">None</span></code> 的引用计数并返回它。）</p>
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最后更新于 12月 09, 2024.
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