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<section id="number-protocol">
<span id="number"></span><h1>数字协议<a class="headerlink" href="#number-protocol" title="永久链接至标题"></a></h1>
<dl class="function">
<dt id="c.PyNumber_Check">
int <code class="sig-name descname">PyNumber_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.PyNumber_Check" title="永久链接至目标"></a></dt>
<dd><p>如果对象 <em>o</em> 提供数字的协议,返回真 <code class="docutils literal notranslate"><span class="pre">1</span></code>,否则返回假。这个函数不会调用失败。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果 <em>o</em> 是一个索引整数则返回 <code class="docutils literal notranslate"><span class="pre">1</span></code></p>
</div>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Add">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Add</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Add" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> 相加的结果,如果失败,返回 <em>NULL</em> 。等价于 Python 中的表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">+</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Subtract">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Subtract</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Subtract" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 减去 <em>o2</em> 的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于Python中的表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">-</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Multiply">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Multiply</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Multiply" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> 相乘的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于Python中的表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">*</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_MatrixMultiply">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_MatrixMultiply</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_MatrixMultiply" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> 做矩阵乘法的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于Python中的表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&#64;</span> <span class="pre">o2</span></code></p>
<div class="versionadded">
<p><span class="versionmodified added">3.5 新版功能.</span></p>
</div>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_FloorDivide">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_FloorDivide</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_FloorDivide" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 除以 <em>o2</em> 的向下取整后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于“传统”的整数除法。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_TrueDivide">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_TrueDivide</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_TrueDivide" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 除以 <em>o2</em> 的一个合理的近似值,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。这个值是近似的因为二进制浮点数是一个近似值它不可能表示出以2为基数的所有实数。这个函数返回两个整数相除得到的浮点数。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Remainder">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Remainder</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Remainder" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 除以 <em>o2</em> 得到的余数,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于Python中的表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">%</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Divmod">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Divmod</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Divmod" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p id="index-0">参考内置函数 <a class="reference internal" href="../library/functions.html#divmod" title="divmod"><code class="xref py py-func docutils literal notranslate"><span class="pre">divmod()</span></code></a>。如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于Python表达式 <code class="docutils literal notranslate"><span class="pre">divmod(o1,</span> <span class="pre">o2)</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Power">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Power</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o3</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Power" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p id="index-1">请参阅内置函数 <a class="reference internal" href="../library/functions.html#pow" title="pow"><code class="xref py py-func docutils literal notranslate"><span class="pre">pow()</span></code></a>。 如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 等价于 Python 中的表达式 <code class="docutils literal notranslate"><span class="pre">pow(o1,</span> <span class="pre">o2,</span> <span class="pre">o3)</span></code>,其中 <em>o3</em> 是可选的。如果要忽略 <em>o3</em>,则需传入 <a class="reference internal" href="none.html#c.Py_None" title="Py_None"><code class="xref c c-data docutils literal notranslate"><span class="pre">Py_None</span></code></a> 作为代替(如果传入 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 会导致非法内存访问)。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Negative">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Negative</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.PyNumber_Negative" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o</em> 的负值,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">-o</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Positive">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Positive</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.PyNumber_Positive" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o</em>,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">+o</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Absolute">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Absolute</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.PyNumber_Absolute" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p id="index-2">返回 <em>o</em> 的绝对值,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">abs(o)</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Invert">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Invert</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.PyNumber_Invert" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o</em> 的按位取反后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">~o</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Lshift">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Lshift</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Lshift" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 左移 <em>o2</em> 个比特后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&lt;&lt;</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Rshift">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Rshift</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Rshift" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 右移 <em>o2</em> 个比特后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&gt;&gt;</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_And">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_And</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_And" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> “按位与”的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&amp;</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Xor">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Xor</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Xor" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> “按位异或”的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于Python中的表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">^o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Or">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Or</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_Or" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> “按位或”的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">|</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceAdd">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceAdd</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceAdd" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> 相加的结果,如果失败,返回 <em>NULL</em> 。当 <em>o1</em> 支持时,这个操作直接将值赋给 <em>o1</em>。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">+</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceSubtract">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceSubtract</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceSubtract" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> 相减的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。当 <em>o1</em> 支持时,这个运算完成后将值赋给 <em>o1</em> 。 等价于 Python语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">-=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceMultiply">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceMultiply</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceMultiply" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2*相乘的结果,如果失败,返回 ``NULL`` 。当 *o1</em> 支持时,这个运算完成后将值赋给 <em>o1</em>。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">+=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceMatrixMultiply">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceMatrixMultiply</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceMatrixMultiply" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em><em>o2</em> 做矩阵乘法后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。当 <em>o1</em> 支持时,这个运算完成后将值赋给 <em>o1</em>。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&#64;=</span> <span class="pre">o2</span></code></p>
<div class="versionadded">
<p><span class="versionmodified added">3.5 新版功能.</span></p>
</div>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceFloorDivide">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceFloorDivide</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceFloorDivide" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 除以 <em>o2</em> 后向下取整的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。当 <em>o1</em> 支持时,这个运算完成后将值赋给 <em>o1</em>。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">//=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceTrueDivide">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceTrueDivide</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceTrueDivide" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 除以 <em>o2</em> 的一个合理的近似值,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。这个值是近似的因为二进制浮点数是一个近似值不可能以2为基数来表示出所有实数。这个函数返回两个整数相除得到的浮点数。当 <em>o1</em> 支持时,这个运算完成后将值赋给 <em>o1</em></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceRemainder">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceRemainder</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceRemainder" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 除以 <em>o2</em> 得到的余数,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。当 <em>o1</em> 支持时,这个运算直接使用它储存结果。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">%=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlacePower">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlacePower</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o3</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlacePower" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p id="index-3">请参阅内置函数 <a class="reference internal" href="../library/functions.html#pow" title="pow"><code class="xref py py-func docutils literal notranslate"><span class="pre">pow()</span></code></a>。 如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。当 <em>o1</em> 支持时,这个运算直接使用它储存结果。当 <em>o3</em><a class="reference internal" href="none.html#c.Py_None" title="Py_None"><code class="xref c c-data docutils literal notranslate"><span class="pre">Py_None</span></code></a> 时,等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">**=</span> <span class="pre">o2</span></code>;否则等价于在原来位置储存结果的 <code class="docutils literal notranslate"><span class="pre">pow(o1,</span> <span class="pre">o2,</span> <span class="pre">o3)</span></code> 。如果要忽略 <em>o3</em>,则需传入 <a class="reference internal" href="none.html#c.Py_None" title="Py_None"><code class="xref c c-data docutils literal notranslate"><span class="pre">Py_None</span></code></a> (传入 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 会导致非法内存访问)。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceLshift">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceLshift</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceLshift" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 左移 <em>o2</em> 个比特后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。当 <em>o1</em> 支持时,这个运算直接使用它储存结果。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&lt;&lt;=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceRshift">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceRshift</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceRshift" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>o1</em> 右移 <em>o2</em> 个比特后的结果,如果失败,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。当 <em>o1</em> 支持时,这个运算直接使用它储存结果。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&gt;&gt;=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceAnd">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceAnd</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceAnd" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>成功时返回 <em>o1</em><em>o2</em> &quot;按位与&quot; 的结果,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 在 <em>o1</em> 支持的前提下该操作将 <em>原地</em> 执行。 等价与 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">&amp;=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceXor">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceXor</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceXor" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>成功时返回 <em>o1</em><em>o2</em> &quot;按位异或的结果,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 在 <em>o1</em> 支持的前提下该操作将 <em>原地</em> 执行。 等价与 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">^=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_InPlaceOr">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_InPlaceOr</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o1</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o2</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_InPlaceOr" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>成功时返回 <em>o1</em><em>o2</em> &quot;按位或&quot; 的结果,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 在 <em>o1</em> 支持的前提下该操作将 <em>原地</em> 执行。 等价于 Python 语句 <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">|=</span> <span class="pre">o2</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Long">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Long</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.PyNumber_Long" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p id="index-4">成功时返回 <em>o</em> 换为整数对象或的结果,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">int(o)</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Float">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Float</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.PyNumber_Float" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p id="index-5">成功时返回 <em>o</em> 转换为浮点对象后的结果,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 等价于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">float(o)</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_Index">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_Index</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.PyNumber_Index" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>成功时返回 <em>o</em> 转换为 Python int 类型后的结果,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 并引发 <a class="reference internal" href="../library/exceptions.html#TypeError" title="TypeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">TypeError</span></code></a> 异常。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_ToBase">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyNumber_ToBase</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *n</em>, int<em> base</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_ToBase" title="永久链接至目标"></a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>返回整数 <em>n</em> 转换成以 <em>base</em> 为基数的字符串后的结果。这个 <em>base</em> 参数必须是 2810 或者 16 。对于基数 28或 16 ,返回的字符串将分别加上基数标识 <code class="docutils literal notranslate"><span class="pre">'0b'</span></code>, <code class="docutils literal notranslate"><span class="pre">'0o'</span></code>, or <code class="docutils literal notranslate"><span class="pre">'0x'</span></code>。如果 <em>n</em> 不是 Python 中的整数 <em>int</em> 类型,就先通过 <a class="reference internal" href="#c.PyNumber_Index" title="PyNumber_Index"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_Index()</span></code></a> 将它转换成整数类型。</p>
</dd></dl>
<dl class="function">
<dt id="c.PyNumber_AsSsize_t">
Py_ssize_t <code class="sig-name descname">PyNumber_AsSsize_t</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *exc</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyNumber_AsSsize_t" title="永久链接至目标"></a></dt>
<dd><p>如果 <em>o</em> 是一个整数类型的解释型,返回 <em>o</em> 转换成一个 Py_ssize_t 值项后的结果。如果调用失败,返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 并引发异常。</p>
<p>如果 <em>o</em> 可以被转换为 Python int 类型但尝试转换为 Py_ssize_t 值则会引发 <a class="reference internal" href="../library/exceptions.html#OverflowError" title="OverflowError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OverflowError</span></code></a>,这时 <em>exc</em> 参数为将被引发的异常类型 (通常是 <a class="reference internal" href="../library/exceptions.html#IndexError" title="IndexError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">IndexError</span></code></a><a class="reference internal" href="../library/exceptions.html#OverflowError" title="OverflowError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">OverflowError</span></code></a>)。 如果 <em>exc</em><code class="docutils literal notranslate"><span class="pre">NULL</span></code>,则异常会被清除并且值会被剪切到负整数 <code class="docutils literal notranslate"><span class="pre">PY_SSIZE_T_MIN</span></code> 或正整数 <code class="docutils literal notranslate"><span class="pre">PY_SSIZE_T_MAX</span></code></p>
</dd></dl>
<dl class="function">
<dt id="c.PyIndex_Check">
int <code class="sig-name descname">PyIndex_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.PyIndex_Check" title="永久链接至目标"></a></dt>
<dd><p>如果 <em>o</em> 是一个索引整数(存有 nb_index 位置并有 tp_as_number 填入其中)则返回 <code class="docutils literal notranslate"><span class="pre">1</span></code>,否则返回 <code class="docutils literal notranslate"><span class="pre">0</span></code> 。这个函数不会调用失败。</p>
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