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<span class="target" id="codeobjects"></span><section id="code-objects">
<span id="index-0"></span><h1>代码对象<a class="headerlink" href="#code-objects" title="永久链接至标题"></a></h1>
<p>代码对象是 CPython 实现的低层级细节。 每个代表一块尚未绑定到函数中的可执行代码。</p>
<dl class="type">
<dt id="c.PyCodeObject">
<code class="sig-name descname">PyCodeObject</code><a class="headerlink" href="#c.PyCodeObject" title="永久链接至目标"></a></dt>
<dd><p>用于描述代码对象的对象的 C 结构。 此类型字段可随时更改。</p>
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<dt id="c.PyCode_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a> <code class="sig-name descname">PyCode_Type</code><a class="headerlink" href="#c.PyCode_Type" title="永久链接至目标"></a></dt>
<dd><p>这是一个 <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> 实例，其表示Python的 <a class="reference internal" href="../library/code.html#module-code" title="code: Facilities to implement read-eval-print loops."><code class="xref py py-class docutils literal notranslate"><span class="pre">code</span></code></a> 类型。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyCode_Check">
int <code class="sig-name descname">PyCode_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *co</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyCode_Check" title="永久链接至目标"></a></dt>
<dd><p>如果 <em>co</em> 是一个 <a class="reference internal" href="../library/code.html#module-code" title="code: Facilities to implement read-eval-print loops."><code class="xref py py-class docutils literal notranslate"><span class="pre">code</span></code></a> 对象则返回 true。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyCode_GetNumFree">
int <code class="sig-name descname">PyCode_GetNumFree</code><span class="sig-paren">(</span><a class="reference internal" href="#c.PyCodeObject" title="PyCodeObject">PyCodeObject</a><em> *co</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyCode_GetNumFree" title="永久链接至目标"></a></dt>
<dd><p>返回 <em>co</em> 中的自由变量数。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyCode_New">
<a class="reference internal" href="#c.PyCodeObject" title="PyCodeObject">PyCodeObject</a>* <code class="sig-name descname">PyCode_New</code><span class="sig-paren">(</span>int<em> argcount</em>, int<em> kwonlyargcount</em>, int<em> nlocals</em>, int<em> stacksize</em>, int<em> flags</em>, <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> *consts</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *names</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *varnames</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *freevars</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *cellvars</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *filename</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *name</em>, int<em> firstlineno</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *lnotab</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyCode_New" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回一个新的代码对象。 如果你需要一个虚拟代码对象来创建一个代码帧，请使用 <a class="reference internal" href="#c.PyCode_NewEmpty" title="PyCode_NewEmpty"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyCode_NewEmpty()</span></code></a>。 调用 <a class="reference internal" href="#c.PyCode_New" title="PyCode_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyCode_New()</span></code></a> 直接可以绑定到准确的 Python 版本，因为字节码的定义经常变化。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyCode_NewWithPosOnlyArgs">
<a class="reference internal" href="#c.PyCodeObject" title="PyCodeObject">PyCodeObject</a>* <code class="sig-name descname">PyCode_NewWithPosOnlyArgs</code><span class="sig-paren">(</span>int<em> argcount</em>, int<em> posonlyargcount</em>, int<em> kwonlyargcount</em>, int<em> nlocals</em>, int<em> stacksize</em>, int<em> flags</em>, <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> *consts</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *names</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *varnames</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *freevars</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *cellvars</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *filename</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *name</em>, int<em> firstlineno</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *lnotab</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyCode_NewWithPosOnlyArgs" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>类似于 <a class="reference internal" href="#c.PyCode_New" title="PyCode_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyCode_New()</span></code></a>，但带有一个额外的 &quot;posonlyargcount&quot; 用于仅限位置参数。</p>
<div class="versionadded">
<p><span class="versionmodified added">3.8 新版功能.</span></p>
</div>
</dd></dl>
<dl class="function">
<dt id="c.PyCode_NewEmpty">
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<dd><em class="refcount">Return value: New reference.</em><p>返回具有指定文件名、函数名和第一行号的新空代码对象。 对于 <a class="reference internal" href="../library/functions.html#exec" title="exec"><code class="xref py py-func docutils literal notranslate"><span class="pre">exec()</span></code></a> 或 <a class="reference internal" href="../library/functions.html#eval" title="eval"><code class="xref py py-func docutils literal notranslate"><span class="pre">eval()</span></code></a> 生成的代码对象是非法的。</p>
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