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<section id="integer-objects">
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<span id="longobjects"></span><h1>整数型对象<a class="headerlink" href="#integer-objects" title="永久链接至标题">¶</a></h1>
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<p id="index-0">所有整数都实现为长度任意的长整数对象。</p>
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<p>在出错时，大多数 <code class="docutils literal notranslate"><span class="pre">PyLong_As*</span></code> API 都会返回 <code class="docutils literal notranslate"><span class="pre">(return</span> <span class="pre">type)-1</span></code>，这与数字无法区分开。请采用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 来加以区分。</p>
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<dl class="type">
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<dt id="c.PyLongObject">
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<code class="sig-name descname">PyLongObject</code><a class="headerlink" href="#c.PyLongObject" title="永久链接至目标">¶</a></dt>
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<dd><p>表示 Python 整数对象的 <a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyObject</span></code></a> 子类型。</p>
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</dd></dl>
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<dl class="var">
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<dt id="c.PyLong_Type">
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<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a> <code class="sig-name descname">PyLong_Type</code><a class="headerlink" href="#c.PyLong_Type" title="永久链接至目标">¶</a></dt>
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<dd><p>这个 <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> 的实例表示 Python 的整数类型。与 Python 语言中的 <a class="reference internal" href="../library/functions.html#int" title="int"><code class="xref py py-class docutils literal notranslate"><span class="pre">int</span></code></a> 相同。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyLong_Check">
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int <code class="sig-name descname">PyLong_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_Check" title="永久链接至目标">¶</a></dt>
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<dd><p>如果参数是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 或 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的子类型，返回 true 。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyLong_CheckExact">
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int <code class="sig-name descname">PyLong_CheckExact</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_CheckExact" title="永久链接至目标">¶</a></dt>
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<dd><p>如果参数属于 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>，但不是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的子类型则返回真值。</p>
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</dd></dl>
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<dl class="function">
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<dt id="c.PyLong_FromLong">
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromLong</code><span class="sig-paren">(</span>long<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>由 <em>v</em> 返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。</p>
|
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<p>The current implementation keeps an array of integer objects for all integers
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||
between <code class="docutils literal notranslate"><span class="pre">-5</span></code> and <code class="docutils literal notranslate"><span class="pre">256</span></code>, when you create an int in that range you actually
|
||
just get back a reference to the existing object. So it should be possible to
|
||
change the value of <code class="docutils literal notranslate"><span class="pre">1</span></code>. I suspect the behaviour of Python in this case is
|
||
undefined. :-)</p>
|
||
</dd></dl>
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|
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<dl class="function">
|
||
<dt id="c.PyLong_FromUnsignedLong">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromUnsignedLong</code><span class="sig-paren">(</span>unsigned long<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromUnsignedLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>由 C <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span></code> 类型返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败时返回 <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">
|
||
<dt id="c.PyLong_FromSsize_t">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromSsize_t</code><span class="sig-paren">(</span>Py_ssize_t<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromSsize_t" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>由 C <code class="xref c c-type docutils literal notranslate"><span class="pre">Py_ssize_t</span></code> 返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_FromSize_t">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromSize_t</code><span class="sig-paren">(</span>size_t<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromSize_t" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>由 C <code class="xref c c-type docutils literal notranslate"><span class="pre">size_t</span></code> 返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败则返回 <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">
|
||
<dt id="c.PyLong_FromLongLong">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromLongLong</code><span class="sig-paren">(</span>long long<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromLongLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>从 C <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span> <span class="pre">long</span></code> 返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_FromUnsignedLongLong">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromUnsignedLongLong</code><span class="sig-paren">(</span>unsigned long long<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromUnsignedLongLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>从 C <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></code> 返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。</p>
|
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</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_FromDouble">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromDouble</code><span class="sig-paren">(</span>double<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromDouble" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>由 <em>v</em> 的整数部分返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 对象，失败则返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_FromString">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromString</code><span class="sig-paren">(</span>const char<em> *str</em>, char<em> **pend</em>, int<em> base</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromString" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>根据 <em>str</em> 字符串值返回一个新的 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> ，<em>base</em> 指定了整数的基。如果 <em>pend</em> 不为 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> ，则 <em>/*pend</em> 将指向 <em>str</em> 中表示数字部分后面的第一个字符。如果 <em>base</em> 为 <code class="docutils literal notranslate"><span class="pre">0</span></code> ， <em>str</em> 将采用 <a class="reference internal" href="../reference/lexical_analysis.html#integers"><span class="std std-ref">整数字面值</span></a> 的定义进行解释；这时非零十进制数的前导零会触发 <a class="reference internal" href="../library/exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a> 。如果 <em>base</em> 不为 <code class="docutils literal notranslate"><span class="pre">0</span></code> ，则须位于 <code class="docutils literal notranslate"><span class="pre">2</span></code> 和 <code class="docutils literal notranslate"><span class="pre">36</span></code> 之间（含 2 和 36）。基之后及数字之间的前导空格、单下划线将被忽略。如果不存在数字，将触发 <a class="reference internal" href="../library/exceptions.html#ValueError" title="ValueError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">ValueError</span></code></a>。</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.PyLong_FromUnicode">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromUnicode</code><span class="sig-paren">(</span><a class="reference internal" href="unicode.html#c.Py_UNICODE" title="Py_UNICODE">Py_UNICODE</a><em> *u</em>, Py_ssize_t<em> length</em>, int<em> base</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromUnicode" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>将 Unicode 数字序列转换为 Python 整数值。</p>
|
||
<div class="deprecated-removed">
|
||
<p><span class="versionmodified">Deprecated since version 3.3, will be removed in version 3.10: </span>旧的 <a class="reference internal" href="unicode.html#c.Py_UNICODE" title="Py_UNICODE"><code class="xref c c-type docutils literal notranslate"><span class="pre">Py_UNICODE</span></code></a> API的一部分;请迁移到使用 <a class="reference internal" href="#c.PyLong_FromUnicodeObject" title="PyLong_FromUnicodeObject"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyLong_FromUnicodeObject()</span></code></a> 。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_FromUnicodeObject">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromUnicodeObject</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *u</em>, int<em> base</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromUnicodeObject" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>将字符串 <em>u</em> 中的 Unicode 数字序列转换为 Python 整数值。</p>
|
||
<div class="versionadded">
|
||
<p><span class="versionmodified added">3.3 新版功能.</span></p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_FromVoidPtr">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyLong_FromVoidPtr</code><span class="sig-paren">(</span>void<em> *p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_FromVoidPtr" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>从指针 <em>p</em> 创建一个 Python 整数。可以使用 <a class="reference internal" href="#c.PyLong_AsVoidPtr" title="PyLong_AsVoidPtr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyLong_AsVoidPtr()</span></code></a> 返回的指针值。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsLong">
|
||
long <code class="sig-name descname">PyLong_AsLong</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *obj</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><p id="index-1">返回 <em>obj</em> 的 C <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span></code> 表达方式。 如果 <em>obj</em> 不是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例，先调用它的 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a> 或 <a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 方法(如果有)将其转换为 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 。</p>
|
||
<p>如果 <em>obj</em> 的值溢出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span></code> 的范围，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>。</p>
|
||
<p>出错则返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。请用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 找出具体问题。</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果可用将使用 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a>。</p>
|
||
</div>
|
||
<div class="deprecated">
|
||
<p><span class="versionmodified deprecated">3.8 版后已移除: </span><a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 已被弃用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsLongAndOverflow">
|
||
long <code class="sig-name descname">PyLong_AsLongAndOverflow</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *obj</em>, int<em> *overflow</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsLongAndOverflow" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <em>obj</em> 的 C <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span></code> 表达方式。 如果 <em>obj</em> 不是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例，先调用它的 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a> 或 <a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 方法(如果有)将其转换为 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 。</p>
|
||
<p>如果 <em>obj</em> 的值大于 <code class="xref py py-const docutils literal notranslate"><span class="pre">LONG_MAX</span></code> 或小于 <code class="xref py py-const docutils literal notranslate"><span class="pre">LONG_MIN</span></code>，则会把 <em>*overflow</em> 分别置为``1`` 或 <code class="docutils literal notranslate"><span class="pre">-1</span></code>，并返回 <code class="docutils literal notranslate"><span class="pre">1</span></code>；否则，将 <em>*overflow</em> 置为 <cite>0</cite>。如果发生其他异常，则会按常规把 <em>*overflow</em> 置为 <code class="docutils literal notranslate"><span class="pre">0</span></code>，并返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code>。</p>
|
||
<p>出错则返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。请用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 找出具体问题。</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果可用将使用 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a>。</p>
|
||
</div>
|
||
<div class="deprecated">
|
||
<p><span class="versionmodified deprecated">3.8 版后已移除: </span><a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 已被弃用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsLongLong">
|
||
long long <code class="sig-name descname">PyLong_AsLongLong</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *obj</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsLongLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><p id="index-2">Return a C <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span> <span class="pre">long</span></code> representation of <em>obj</em>. If <em>obj</em> is not an
|
||
instance of <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>, first call its <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a> or
|
||
<a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> method (if present) to convert it to a
|
||
<a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>.</p>
|
||
<p>如果 <em>obj</em> 值超出 <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span> <span class="pre">long</span></code> ，触发 <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></p>
|
||
<p>出错则返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。请用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 找出具体问题。</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果可用将使用 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a>。</p>
|
||
</div>
|
||
<div class="deprecated">
|
||
<p><span class="versionmodified deprecated">3.8 版后已移除: </span><a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 已被弃用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsLongLongAndOverflow">
|
||
long long <code class="sig-name descname">PyLong_AsLongLongAndOverflow</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *obj</em>, int<em> *overflow</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsLongLongAndOverflow" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>Return a C <code class="xref c c-type docutils literal notranslate"><span class="pre">long</span> <span class="pre">long</span></code> representation of <em>obj</em>. If <em>obj</em> is not an
|
||
instance of <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>, first call its <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a> or
|
||
<a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> method (if present) to convert it to a
|
||
<a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>.</p>
|
||
<p>If the value of <em>obj</em> is greater than <code class="xref py py-const docutils literal notranslate"><span class="pre">PY_LLONG_MAX</span></code> or less than
|
||
<code class="xref py py-const docutils literal notranslate"><span class="pre">PY_LLONG_MIN</span></code>, set <em>*overflow</em> to <code class="docutils literal notranslate"><span class="pre">1</span></code> or <code class="docutils literal notranslate"><span class="pre">-1</span></code>, respectively,
|
||
and return <code class="docutils literal notranslate"><span class="pre">-1</span></code>; otherwise, set <em>*overflow</em> to <code class="docutils literal notranslate"><span class="pre">0</span></code>. If any other
|
||
exception occurs set <em>*overflow</em> to <code class="docutils literal notranslate"><span class="pre">0</span></code> and return <code class="docutils literal notranslate"><span class="pre">-1</span></code> as usual.</p>
|
||
<p>出错则返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。请用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 找出具体问题。</p>
|
||
<div class="versionadded">
|
||
<p><span class="versionmodified added">3.2 新版功能.</span></p>
|
||
</div>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果可用将使用 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a>。</p>
|
||
</div>
|
||
<div class="deprecated">
|
||
<p><span class="versionmodified deprecated">3.8 版后已移除: </span><a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 已被弃用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsSsize_t">
|
||
Py_ssize_t <code class="sig-name descname">PyLong_AsSsize_t</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *pylong</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsSsize_t" title="永久链接至目标">¶</a></dt>
|
||
<dd><p id="index-3">返回 <em>pylong</em> 的 C 语言 <code class="xref c c-type docutils literal notranslate"><span class="pre">Py_ssize_t</span></code> 形式。<em>pylong</em> 必须是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例。</p>
|
||
<p>如果 <em>pylong</em> 的值超出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">Py_ssize_t</span></code> 的取值范围则会引发 <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>。</p>
|
||
<p>出错则返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。请用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 找出具体问题。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsUnsignedLong">
|
||
unsigned long <code class="sig-name descname">PyLong_AsUnsignedLong</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *pylong</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsUnsignedLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><p id="index-4">返回 <em>pylong</em> 的 C <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span></code> 形式。 <em>pylong</em> 必须是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例。</p>
|
||
<p>如果 <em>pylong</em> 的值超出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span></code> 的取值范围则会引发 <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>。</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">(unsigned</span> <span class="pre">long)-1</span></code> ，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsSize_t">
|
||
size_t <code class="sig-name descname">PyLong_AsSize_t</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *pylong</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsSize_t" title="永久链接至目标">¶</a></dt>
|
||
<dd><p id="index-5">返回 <em>pylong</em> 的 C 语言 <code class="xref c c-type docutils literal notranslate"><span class="pre">size_t</span></code> 形式。<em>pylong</em> 必须是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例。</p>
|
||
<p>如果 <em>pylong</em> 的值超出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">size_t</span></code> 的取值范围则会引发 <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>。</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">(size_t)-1</span></code> ，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsUnsignedLongLong">
|
||
unsigned long long <code class="sig-name descname">PyLong_AsUnsignedLongLong</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *pylong</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsUnsignedLongLong" title="永久链接至目标">¶</a></dt>
|
||
<dd><p id="index-6">返回 <em>pylong</em> 的 C 语言 <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></code> 形式。<em>pylong</em> 必须是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例。</p>
|
||
<p>如果 <em>pylong</em> 的值超出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></code> 的取值范围则会引发 <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>。</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">(unsigned</span> <span class="pre">long</span> <span class="pre">long)-1</span></code>，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.1 版更改: </span>现在 <em>pylong</em> 为负值会触发 <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>，而不是 <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>。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsUnsignedLongMask">
|
||
unsigned long <code class="sig-name descname">PyLong_AsUnsignedLongMask</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *obj</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsUnsignedLongMask" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <em>obj</em> 的 C <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span></code> 表示形式。 如果 <em>obj</em> 不是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例，则会先调用其 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a> 或 <a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 方法（如果有的话）将其转为 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>。</p>
|
||
<p>如果 <em>obj</em> 的值超出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span></code> 的范围，则返回该值对 <code class="docutils literal notranslate"><span class="pre">ULONG_MAX</span> <span class="pre">+</span> <span class="pre">1</span></code> 求模的差值。</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">(unsigned</span> <span class="pre">long)-1</span></code>，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果可用将使用 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a>。</p>
|
||
</div>
|
||
<div class="deprecated">
|
||
<p><span class="versionmodified deprecated">3.8 版后已移除: </span><a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 已被弃用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsUnsignedLongLongMask">
|
||
unsigned long long <code class="sig-name descname">PyLong_AsUnsignedLongLongMask</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *obj</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsUnsignedLongLongMask" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <em>obj</em> 的 C <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></code> 表示形式。 如果 <em>obj</em> 不是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例，则会先调用其 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a> 或 <a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 方法（如果有的话）将其转为 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a>。</p>
|
||
<p>If the value of <em>obj</em> is out of range for an <code class="xref c c-type docutils literal notranslate"><span class="pre">unsigned</span> <span class="pre">long</span> <span class="pre">long</span></code>,
|
||
return the reduction of that value modulo <code class="docutils literal notranslate"><span class="pre">PY_ULLONG_MAX</span> <span class="pre">+</span> <span class="pre">1</span></code>.</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">(unsigned</span> <span class="pre">long</span> <span class="pre">long)-1</span></code>，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
<div class="versionchanged">
|
||
<p><span class="versionmodified changed">在 3.8 版更改: </span>如果可用将使用 <a class="reference internal" href="../reference/datamodel.html#object.__index__" title="object.__index__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__index__()</span></code></a>。</p>
|
||
</div>
|
||
<div class="deprecated">
|
||
<p><span class="versionmodified deprecated">3.8 版后已移除: </span><a class="reference internal" href="../reference/datamodel.html#object.__int__" title="object.__int__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__int__()</span></code></a> 已被弃用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsDouble">
|
||
double <code class="sig-name descname">PyLong_AsDouble</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *pylong</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsDouble" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回 <em>pylong</em> 的 C 语言 <code class="xref c c-type docutils literal notranslate"><span class="pre">double</span></code> 形式。<em>pylong</em> 必须是 <a class="reference internal" href="#c.PyLongObject" title="PyLongObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyLongObject</span></code></a> 的实例。</p>
|
||
<p>如果 <em>pylong</em> 的值超出了 <code class="xref c c-type docutils literal notranslate"><span class="pre">double</span></code> 的取值范围则会引发 <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>。</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">-1.0</span></code> ，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyLong_AsVoidPtr">
|
||
void* <code class="sig-name descname">PyLong_AsVoidPtr</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *pylong</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyLong_AsVoidPtr" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>将一个 Python 整数 <em>pylong</em> 转换为 C 语言的 <code class="xref c c-type docutils literal notranslate"><span class="pre">void</span></code> 指针。 如果 <em>pylong</em> 无法转换，则会触发 <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>。 这只是保证为 <a class="reference internal" href="#c.PyLong_FromVoidPtr" title="PyLong_FromVoidPtr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyLong_FromVoidPtr()</span></code></a> 创建的值产生一个合法的 <code class="xref c c-type docutils literal notranslate"><span class="pre">void</span></code> 指针。</p>
|
||
<p>出错时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>，请利用 <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> 辨别具体问题。</p>
|
||
</dd></dl>
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|
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