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<section id="mapping-protocol">
<span id="mapping"></span><h1>對映協定<a class="headerlink" href="#mapping-protocol" title="連結到這個標頭">¶</a></h1>
<p>另請參閱 <a class="reference internal" href="object.html#c.PyObject_GetItem" title="PyObject_GetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetItem()</span></code></a>、<a class="reference internal" href="object.html#c.PyObject_SetItem" title="PyObject_SetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_SetItem()</span></code></a> 和 <a class="reference internal" href="object.html#c.PyObject_DelItem" title="PyObject_DelItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_DelItem()</span></code></a>。</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_Check</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_Check" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>如果物件有提供對映協定或支援切片 (slicing) 則回傳 <code class="docutils literal notranslate"><span class="pre">1</span></code>，否則回傳 <code class="docutils literal notranslate"><span class="pre">0</span></code>。請注意，對於具有 <a class="reference internal" href="../reference/datamodel.html#object.__getitem__" title="object.__getitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getitem__()</span></code></a> 方法的 Python 類別，它會回傳 <code class="docutils literal notranslate"><span class="pre">1</span></code>，因為通常無法確定該類別支援什麼類型的鍵。這個函式總會是成功的。</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_Size">
<a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><span class="n"><span class="pre">Py_ssize_t</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_Size</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_Size" title="連結到這個定義">¶</a><br /></dt>
<dt class="sig sig-object c" id="c.PyMapping_Length">
<a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><span class="n"><span class="pre">Py_ssize_t</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_Length</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_Length" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p id="index-0">成功時回傳物件 <em>o</em> 中的鍵數，失敗時回傳 <code class="docutils literal notranslate"><span class="pre">-1</span></code>。這相當於 Python 運算式 <code class="docutils literal notranslate"><span class="pre">len(o)</span></code>。</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_GetItemString">
<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">PyMapping_GetItemString</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_GetItemString" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">回傳值：新的參照。</em><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>這與 <a class="reference internal" href="object.html#c.PyObject_GetItem" title="PyObject_GetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetItem()</span></code></a> 相同，但 <em>key</em> 被指定為 <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 編碼位元組字串，而不是 <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>。</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_GetOptionalItem">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_GetOptionalItem</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">obj</span></span>, <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="n"><span class="pre">key</span></span>, <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="p"><span class="pre">*</span></span><span class="n"><span class="pre">result</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_GetOptionalItem" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a> 自 3.13 版本開始.</em><p>Variant of <a class="reference internal" href="object.html#c.PyObject_GetItem" title="PyObject_GetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetItem()</span></code></a> which doesn't raise
<a class="reference internal" href="../library/exceptions.html#KeyError" title="KeyError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">KeyError</span></code></a> if the key is not found.</p>
<p>If the key is found, return <code class="docutils literal notranslate"><span class="pre">1</span></code> and set <em>*result</em> to a new
<a class="reference internal" href="../glossary.html#term-strong-reference"><span class="xref std std-term">strong reference</span></a> to the corresponding value.
If the key is not found, return <code class="docutils literal notranslate"><span class="pre">0</span></code> and set <em>*result</em> to <code class="docutils literal notranslate"><span class="pre">NULL</span></code>;
the <a class="reference internal" href="../library/exceptions.html#KeyError" title="KeyError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">KeyError</span></code></a> is silenced.
If an error other than <a class="reference internal" href="../library/exceptions.html#KeyError" title="KeyError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">KeyError</span></code></a> is raised, return <code class="docutils literal notranslate"><span class="pre">-1</span></code> and
set <em>*result</em> to <code class="docutils literal notranslate"><span class="pre">NULL</span></code>.</p>
<div class="versionadded">
<p><span class="versionmodified added">在 3.13 版被加入.</span></p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_GetOptionalItemString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_GetOptionalItemString</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">obj</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">key</span></span>, <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="p"><span class="pre">*</span></span><span class="n"><span class="pre">result</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_GetOptionalItemString" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a> 自 3.13 版本開始.</em><p>這與 <a class="reference internal" href="#c.PyMapping_GetOptionalItem" title="PyMapping_GetOptionalItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_GetOptionalItem()</span></code></a> 相同，但 <em>key</em> 被指定為 <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 編碼位元組字串，而不是 <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>。</p>
<div class="versionadded">
<p><span class="versionmodified added">在 3.13 版被加入.</span></p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_SetItemString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_SetItemString</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">key</span></span>, <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="n"><span class="pre">v</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_SetItemString" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>這與 <a class="reference internal" href="object.html#c.PyObject_SetItem" title="PyObject_SetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_SetItem()</span></code></a> 相同，但 <em>key</em> 被指定為 <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 編碼位元組字串，而不是 <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>。</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_DelItem">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_DelItem</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <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="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_DelItem" title="連結到這個定義">¶</a><br /></dt>
<dd><p>這是 <a class="reference internal" href="object.html#c.PyObject_DelItem" title="PyObject_DelItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_DelItem()</span></code></a> 的別名。</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_DelItemString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_DelItemString</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_DelItemString" title="連結到這個定義">¶</a><br /></dt>
<dd><p>這與 <a class="reference internal" href="object.html#c.PyObject_DelItem" title="PyObject_DelItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_DelItem()</span></code></a> 相同，但 <em>key</em> 被指定為 <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 編碼位元組字串，而不是 <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>。</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_HasKeyWithError">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_HasKeyWithError</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <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="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_HasKeyWithError" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a> 自 3.13 版本開始.</em><p>如果對映物件具有鍵 <em>key</em> 則回傳 <code class="docutils literal notranslate"><span class="pre">1</span></code>，否則回傳 <code class="docutils literal notranslate"><span class="pre">0</span></code>。這相當於 Python 運算式 <code class="docutils literal notranslate"><span class="pre">key</span> <span class="pre">in</span> <span class="pre">o</span></code>。失敗時回傳 <code class="docutils literal notranslate"><span class="pre">-1</span></code>。</p>
<div class="versionadded">
<p><span class="versionmodified added">在 3.13 版被加入.</span></p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_HasKeyStringWithError">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_HasKeyStringWithError</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_HasKeyStringWithError" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a> 自 3.13 版本開始.</em><p>這與 <a class="reference internal" href="#c.PyMapping_HasKeyWithError" title="PyMapping_HasKeyWithError"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_HasKeyWithError()</span></code></a> 相同，但 <em>key</em> 被指定為 <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 編碼位元組字串，而不是 <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>。</p>
<div class="versionadded">
<p><span class="versionmodified added">在 3.13 版被加入.</span></p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_HasKey">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_HasKey</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <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="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_HasKey" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>如果對映物件具有鍵 <em>key</em> 則回傳 <code class="docutils literal notranslate"><span class="pre">1</span></code>，否則回傳 <code class="docutils literal notranslate"><span class="pre">0</span></code>。這相當於 Python 運算式 <code class="docutils literal notranslate"><span class="pre">key</span> <span class="pre">in</span> <span class="pre">o</span></code>。這個函式總會是成功的。</p>
<div class="admonition note">
<p class="admonition-title">備註</p>
<p>當它呼叫 <a class="reference internal" href="../reference/datamodel.html#object.__getitem__" title="object.__getitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getitem__()</span></code></a> 方法時發生的例外將被默默忽略。為了適當地處理錯誤，請改用 <a class="reference internal" href="#c.PyMapping_HasKeyWithError" title="PyMapping_HasKeyWithError"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_HasKeyWithError()</span></code></a>、<a class="reference internal" href="#c.PyMapping_GetOptionalItem" title="PyMapping_GetOptionalItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_GetOptionalItem()</span></code></a> 或 <a class="reference internal" href="object.html#c.PyObject_GetItem" title="PyObject_GetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetItem()</span></code></a>。</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_HasKeyString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMapping_HasKeyString</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span>, <span class="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_HasKeyString" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>這與 <a class="reference internal" href="#c.PyMapping_HasKey" title="PyMapping_HasKey"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_HasKey()</span></code></a> 相同，但 <em>key</em> 被指定為 <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 編碼位元組字串，而不是 <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>。</p>
<div class="admonition note">
<p class="admonition-title">備註</p>
<p>當它呼叫 <a class="reference internal" href="../reference/datamodel.html#object.__getitem__" title="object.__getitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getitem__()</span></code></a> 方法或建立臨時 <a class="reference internal" href="../library/stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> 物件時發生的例外將被默默忽略。為了適當地處理錯誤，請改用 <a class="reference internal" href="#c.PyMapping_HasKeyStringWithError" title="PyMapping_HasKeyStringWithError"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_HasKeyStringWithError()</span></code></a>、<a class="reference internal" href="#c.PyMapping_GetOptionalItemString" title="PyMapping_GetOptionalItemString"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_GetOptionalItemString()</span></code></a> 或 <a class="reference internal" href="#c.PyMapping_GetItemString" title="PyMapping_GetItemString"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyMapping_GetItemString()</span></code></a>。</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_Keys">
<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">PyMapping_Keys</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_Keys" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">回傳值：新的參照。</em><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>成功時回傳一個物件 <em>o</em> 內之鍵的串列，失敗時回傳 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.7 版的變更: </span>在以前，該函式會回傳串列或元組。</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_Values">
<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">PyMapping_Values</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_Values" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">回傳值：新的參照。</em><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>成功時回傳物件 <em>o</em> 中值的串列。失敗時回傳 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.7 版的變更: </span>在以前，該函式會回傳串列或元組。</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyMapping_Items">
<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">PyMapping_Items</span></span></span><span class="sig-paren">(</span><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="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyMapping_Items" title="連結到這個定義">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">回傳值：新的參照。</em><em class="stableabi"> 為 <a class="reference internal" href="stable.html#stable"><span class="std std-ref">穩定 ABI 的一部分</span></a>.</em><p>成功時回傳物件 <em>o</em> 內之項目的串列，其中每個項目都是包含鍵值對的元組。失敗時回傳 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.7 版的變更: </span>在以前，該函式會回傳串列或元組。</p>
</div>
</dd></dl>
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