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<section id="function-objects">
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<span id="id1"></span><h1>函数对象<a class="headerlink" href="#function-objects" title="永久链接至标题">¶</a></h1>
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<p id="index-0">有一些特定于 Python 函数的函数。</p>
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<dl class="type">
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<dt id="c.PyFunctionObject">
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<code class="sig-name descname">PyFunctionObject</code><a class="headerlink" href="#c.PyFunctionObject" title="永久链接至目标">¶</a></dt>
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<dd><p>用于函数的 C 结构体。</p>
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</dd></dl>
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<dl class="var">
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<dt id="c.PyFunction_Type">
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<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a> <code class="sig-name descname">PyFunction_Type</code><a class="headerlink" href="#c.PyFunction_Type" title="永久链接至目标">¶</a></dt>
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<dd><p id="index-1">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> 实例并表示 Python 函数类型。 它作为 <code class="docutils literal notranslate"><span class="pre">types.FunctionType</span></code> 向 Python 程序员公开。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyFunction_Check">
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int <code class="sig-name descname">PyFunction_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_Check" title="永久链接至目标">¶</a></dt>
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<dd><p>如果 <em>o</em> 是函数对象 (类型为 <a class="reference internal" href="#c.PyFunction_Type" title="PyFunction_Type"><code class="xref c c-data docutils literal notranslate"><span class="pre">PyFunction_Type</span></code></a>) 则返回真值。 形参必须不为 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyFunction_New">
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_New</code><span class="sig-paren">(</span><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> *globals</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_New" title="永久链接至目标">¶</a></dt>
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<dd><em class="refcount">Return value: New reference.</em><p>返回与代码对象 <em>code</em> 关联的新函数对象。 <em>globals</em> 必须是一个字典，该函数可以访问全局变量。</p>
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<p>从代码对象中提取函数的文档字符串和名称。 <em>__module__</em> 会从 <em>globals</em> 中提取。 参数 defaults, annotations 和 closure 设为 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 <em>__qualname__</em> 设为与函数名称相同的值。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyFunction_NewWithQualName">
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_NewWithQualName</code><span class="sig-paren">(</span><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> *globals</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *qualname</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_NewWithQualName" title="永久链接至目标">¶</a></dt>
|
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<dd><em class="refcount">Return value: New reference.</em><p>类似 <a class="reference internal" href="#c.PyFunction_New" title="PyFunction_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyFunction_New()</span></code></a>，但还允许设置函数对象的 <code class="docutils literal notranslate"><span class="pre">__qualname__</span></code> 属性。 <em>qualname</em> 应当是 unicode 对象或 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>；如果是 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 则 <code class="docutils literal notranslate"><span class="pre">__qualname__</span></code> 属性设为与其 <code class="docutils literal notranslate"><span class="pre">__name__</span></code> 属性相同的值。</p>
|
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<div class="versionadded">
|
||
<p><span class="versionmodified added">3.3 新版功能.</span></p>
|
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</div>
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</dd></dl>
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|
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<dl class="function">
|
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<dt id="c.PyFunction_GetCode">
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||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_GetCode</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetCode" title="永久链接至目标">¶</a></dt>
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<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回与函数对象 <em>op</em> 关联的代码对象。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyFunction_GetGlobals">
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||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_GetGlobals</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetGlobals" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回与函数对象*op*相关联的全局字典。</p>
|
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</dd></dl>
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<dl class="function">
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<dt id="c.PyFunction_GetModule">
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||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_GetModule</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetModule" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回函数对象 <em>op</em> 的 <em>__module__</em> 属性，通常为一个包含了模块名称的字符串，但可以通过 Python 代码设为返回其他任意对象。</p>
|
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</dd></dl>
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|
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<dl class="function">
|
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<dt id="c.PyFunction_GetDefaults">
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||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_GetDefaults</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetDefaults" title="永久链接至目标">¶</a></dt>
|
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<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回函数对象 <em>op</em> 的参数默认值。 这可以是一个参数元组或 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。</p>
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</dd></dl>
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|
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<dl class="function">
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<dt id="c.PyFunction_SetDefaults">
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||
int <code class="sig-name descname">PyFunction_SetDefaults</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *defaults</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_SetDefaults" title="永久链接至目标">¶</a></dt>
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||
<dd><p>为函数对象 <em>op</em> 设置参数默认值。 <em>defaults</em> 必须为 <code class="docutils literal notranslate"><span class="pre">Py_None</span></code> 或一个元组。</p>
|
||
<p>失败时引发 <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">SystemError</span></code></a> 异常并返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
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<dt id="c.PyFunction_GetClosure">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyFunction_GetClosure</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetClosure" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回关联到函数对象 <em>op</em> 的闭包。 这可以是 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 或 cell 对象的元组。</p>
|
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</dd></dl>
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||
|
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<dl class="function">
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||
<dt id="c.PyFunction_SetClosure">
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||
int <code class="sig-name descname">PyFunction_SetClosure</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *closure</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_SetClosure" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置关联到函数对象 <em>op</em> 的闭包。 <em>closure</em> 必须为 <code class="docutils literal notranslate"><span class="pre">Py_None</span></code> 或 cell 对象的元组。</p>
|
||
<p>失败时引发 <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">SystemError</span></code></a> 异常并返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyFunction_GetAnnotations">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a> *<code class="sig-name descname">PyFunction_GetAnnotations</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_GetAnnotations" title="永久链接至目标">¶</a></dt>
|
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<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回函数对象 <em>op</em> 的标注。 这可以是一个可变字典或 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyFunction_SetAnnotations">
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int <code class="sig-name descname">PyFunction_SetAnnotations</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *op</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *annotations</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFunction_SetAnnotations" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>设置函数对象 <em>op</em> 的标注。 <em>annotations</em> 必须为一个字典或 <code class="docutils literal notranslate"><span class="pre">Py_None</span></code>。</p>
|
||
<p>失败时引发 <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">SystemError</span></code></a> 异常并返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。</p>
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</dd></dl>
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