499 lines
35 KiB
HTML
499 lines
35 KiB
HTML
|
||
<!DOCTYPE html>
|
||
|
||
<html xmlns="http://www.w3.org/1999/xhtml" lang="zh_CN">
|
||
<head>
|
||
<meta charset="utf-8" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
|
||
|
||
<title>元组对象 — Python 3.8.20 文档</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||
|
||
<link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" />
|
||
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
|
||
|
||
<script id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
|
||
<script src="../_static/jquery.js"></script>
|
||
<script src="../_static/underscore.js"></script>
|
||
<script src="../_static/doctools.js"></script>
|
||
<script src="../_static/language_data.js"></script>
|
||
<script src="../_static/translations.js"></script>
|
||
|
||
<script src="../_static/sidebar.js"></script>
|
||
|
||
<link rel="search" type="application/opensearchdescription+xml"
|
||
title="在 Python 3.8.20 文档 中搜索"
|
||
href="../_static/opensearch.xml"/>
|
||
<link rel="author" title="关于这些文档" href="../about.html" />
|
||
<link rel="index" title="索引" href="../genindex.html" />
|
||
<link rel="search" title="搜索" href="../search.html" />
|
||
<link rel="copyright" title="版权所有" href="../copyright.html" />
|
||
<link rel="next" title="列表对象" href="list.html" />
|
||
<link rel="prev" title="Unicode对象和编解码器" href="unicode.html" />
|
||
<link rel="canonical" href="https://docs.python.org/3/c-api/tuple.html" />
|
||
|
||
|
||
|
||
|
||
|
||
<style>
|
||
@media only screen {
|
||
table.full-width-table {
|
||
width: 100%;
|
||
}
|
||
}
|
||
</style>
|
||
<link rel="shortcut icon" type="image/png" href="../_static/py.svg" />
|
||
<script type="text/javascript" src="../_static/copybutton.js"></script>
|
||
<script type="text/javascript" src="../_static/menu.js"></script>
|
||
|
||
</head>
|
||
<body>
|
||
<div class="mobile-nav">
|
||
<input type="checkbox" id="menuToggler" class="toggler__input" aria-controls="navigation"
|
||
aria-pressed="false" aria-expanded="false" role="button" aria-label="Menu" />
|
||
<label for="menuToggler" class="toggler__label">
|
||
<span></span>
|
||
</label>
|
||
<nav class="nav-content" role="navigation">
|
||
<a href="https://www.python.org/" class="nav-logo">
|
||
<img src="../_static/py.svg" alt="Logo"/>
|
||
</a>
|
||
<div class="version_switcher_placeholder"></div>
|
||
<form role="search" class="search" action="../search.html" method="get">
|
||
<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" class="search-icon">
|
||
<path fill-rule="nonzero"
|
||
d="M15.5 14h-.79l-.28-.27a6.5 6.5 0 001.48-5.34c-.47-2.78-2.79-5-5.59-5.34a6.505 6.505 0 00-7.27 7.27c.34 2.8 2.56 5.12 5.34 5.59a6.5 6.5 0 005.34-1.48l.27.28v.79l4.25 4.25c.41.41 1.08.41 1.49 0 .41-.41.41-1.08 0-1.49L15.5 14zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z" fill="#444"></path>
|
||
</svg>
|
||
<input type="text" name="q" aria-label="快速搜索"/>
|
||
<input type="submit" value="转向"/>
|
||
</form>
|
||
</nav>
|
||
<div class="menu-wrapper">
|
||
<nav class="menu" role="navigation" aria-label="main navigation">
|
||
<div class="language_switcher_placeholder"></div>
|
||
<h3><a href="../contents.html">目录</a></h3>
|
||
<ul>
|
||
<li><a class="reference internal" href="#">元组对象</a></li>
|
||
<li><a class="reference internal" href="#struct-sequence-objects">结构序列对象</a></li>
|
||
</ul>
|
||
|
||
<h4>上一个主题</h4>
|
||
<p class="topless"><a href="unicode.html"
|
||
title="上一章">Unicode对象和编解码器</a></p>
|
||
<h4>下一个主题</h4>
|
||
<p class="topless"><a href="list.html"
|
||
title="下一章">列表对象</a></p>
|
||
<div role="note" aria-label="source link">
|
||
<h3>本页</h3>
|
||
<ul class="this-page-menu">
|
||
<li><a href="../bugs.html">报告 Bug</a></li>
|
||
<li>
|
||
<a href="https://github.com/python/cpython/blob/3.8/Doc/c-api/tuple.rst"
|
||
rel="nofollow">显示源代码
|
||
</a>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
</nav>
|
||
</div>
|
||
</div>
|
||
|
||
<div id="outdated-warning" style="padding: .5em; text-align: center; background-color: #FFBABA; color: #6A0E0E;">
|
||
这个文档所针对的是一个已不再受支持的 Python 旧版本。
|
||
你应当升级版本,并阅读
|
||
<a href="/3/c-api/tuple.html"> Python 当前稳定版本的文档</a>.
|
||
</div>
|
||
|
||
<div class="related" role="navigation" aria-label="related navigation">
|
||
<h3>导航</h3>
|
||
<ul>
|
||
<li class="right" style="margin-right: 10px">
|
||
<a href="../genindex.html" title="总目录"
|
||
accesskey="I">索引</a></li>
|
||
<li class="right" >
|
||
<a href="../py-modindex.html" title="Python 模块索引"
|
||
>模块</a> |</li>
|
||
<li class="right" >
|
||
<a href="list.html" title="列表对象"
|
||
accesskey="N">下一页</a> |</li>
|
||
<li class="right" >
|
||
<a href="unicode.html" title="Unicode对象和编解码器"
|
||
accesskey="P">上一页</a> |</li>
|
||
|
||
<li><img src="../_static/py.svg" alt="python logo" style="vertical-align: middle; margin-top: -1px"/></li>
|
||
<li><a href="https://www.python.org/">Python</a> »</li>
|
||
<li class="switchers">
|
||
<div class="language_switcher_placeholder"></div>
|
||
<div class="version_switcher_placeholder"></div>
|
||
</li>
|
||
<li>
|
||
|
||
</li>
|
||
<li id="cpython-language-and-version">
|
||
<a href="../index.html">3.8.20 Documentation</a> »
|
||
</li>
|
||
|
||
<li class="nav-item nav-item-1"><a href="index.html" >Python/C API 参考手册</a> »</li>
|
||
<li class="nav-item nav-item-2"><a href="concrete.html" accesskey="U">具体的对象层</a> »</li>
|
||
<li class="right">
|
||
|
||
|
||
<div class="inline-search" role="search">
|
||
<form class="inline-search" action="../search.html" method="get">
|
||
<input placeholder="快速搜索" aria-label="快速搜索" type="text" name="q" />
|
||
<input type="submit" value="转向" />
|
||
<input type="hidden" name="check_keywords" value="yes" />
|
||
<input type="hidden" name="area" value="default" />
|
||
</form>
|
||
</div>
|
||
|
|
||
</li>
|
||
|
||
</ul>
|
||
</div>
|
||
|
||
<div class="document">
|
||
<div class="documentwrapper">
|
||
<div class="bodywrapper">
|
||
<div class="body" role="main">
|
||
|
||
<section id="tuple-objects">
|
||
<span id="tupleobjects"></span><h1>元组对象<a class="headerlink" href="#tuple-objects" title="永久链接至标题">¶</a></h1>
|
||
<span class="target" id="index-0"></span><dl class="type">
|
||
<dt id="c.PyTupleObject">
|
||
<code class="sig-name descname">PyTupleObject</code><a class="headerlink" href="#c.PyTupleObject" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>这个 <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> 的子类型代表一个 Python 的元组对象。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="var">
|
||
<dt id="c.PyTuple_Type">
|
||
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a> <code class="sig-name descname">PyTuple_Type</code><a class="headerlink" href="#c.PyTuple_Type" title="永久链接至目标">¶</a></dt>
|
||
<dd><p><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> 的实例代表一个 Python 元组类型,这与 Python 层面的 <a class="reference internal" href="../library/stdtypes.html#tuple" title="tuple"><code class="xref py py-class docutils literal notranslate"><span class="pre">tuple</span></code></a> 是相同的对象。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_Check">
|
||
int <code class="sig-name descname">PyTuple_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.PyTuple_Check" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>如果 <em>p</em> 是一个元组对象或者元组类型的子类型的实例,则返回真值。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_CheckExact">
|
||
int <code class="sig-name descname">PyTuple_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.PyTuple_CheckExact" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>如果 <em>p</em> 是一个元组对象,而不是一个元组类型的子类型实例,则返回真值。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_New">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyTuple_New</code><span class="sig-paren">(</span>Py_ssize_t<em> len</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_New" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>成功时返回一个新的元组对象,长度为 <em>len</em>,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.PyTuple_Pack">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyTuple_Pack</code><span class="sig-paren">(</span>Py_ssize_t<em> n</em>, ...<span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_Pack" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>成功时返回一个新的元组对象,大小为 <em>n</em> ,失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 元组值初始化为指向 Python 对象的后续 <em>n</em> 个 C 参数。 <code class="docutils literal notranslate"><span class="pre">PyTuple_Pack(2,</span> <span class="pre">a,</span> <span class="pre">b)</span></code> 和 <code class="docutils literal notranslate"><span class="pre">Py_BuildValue("(OO)",</span> <span class="pre">a,</span> <span class="pre">b)</span></code> 相等。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_Size">
|
||
Py_ssize_t <code class="sig-name descname">PyTuple_Size</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.PyTuple_Size" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>获取指向元组对象的指针,并返回该元组的大小。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_GET_SIZE">
|
||
Py_ssize_t <code class="sig-name descname">PyTuple_GET_SIZE</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.PyTuple_GET_SIZE" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>返回元组 <em>p</em> 的大小,它必须为非 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 并且指向一个元组;不执行错误检查。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_GetItem">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyTuple_GetItem</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GetItem" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回 <em>p</em> 所指向的元组中,位于 <em>pos</em> 处的对象。 如果 <em>pos</em> 超出界限,返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>,并抛出一个 <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> 异常。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_GET_ITEM">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyTuple_GET_ITEM</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GET_ITEM" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p>类似于 <a class="reference internal" href="#c.PyTuple_GetItem" title="PyTuple_GetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyTuple_GetItem()</span></code></a>,但不检查其参数。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_GetSlice">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyTuple_GetSlice</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> low</em>, Py_ssize_t<em> high</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GetSlice" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>返回 <em>p</em> 所指向的元组的切片,在 <em>low</em> 和 <em>high</em> 之间,或者在失败时返回 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>。 这等同于 Python 表达式 <code class="docutils literal notranslate"><span class="pre">p[low:high]</span></code>。 不支持从列表末尾索引。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_SetItem">
|
||
int <code class="sig-name descname">PyTuple_SetItem</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em>, <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.PyTuple_SetItem" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>在 <em>p</em> 指向的元组的 <em>pos</em> 位置插入对对象 <em>o</em> 的引用。 成功时返回 <code class="docutils literal notranslate"><span class="pre">0</span></code>;如果 <em>pos</em> 越界,则返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code>,并抛出一个 <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> 异常。</p>
|
||
<div class="admonition note">
|
||
<p class="admonition-title">注解</p>
|
||
<p>此函数会“窃取”对 <em>o</em> 的引用,并丢弃对元组中已在受影响位置的条目的引用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_SET_ITEM">
|
||
void <code class="sig-name descname">PyTuple_SET_ITEM</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em>, <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.PyTuple_SET_ITEM" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>类似于 <a class="reference internal" href="#c.PyTuple_SetItem" title="PyTuple_SetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyTuple_SetItem()</span></code></a>,但不进行错误检查,并且应该 <em>只是</em> 被用来填充全新的元组。</p>
|
||
<div class="admonition note">
|
||
<p class="admonition-title">注解</p>
|
||
<p>这个宏会“偷走”一个对 <em>o</em> 的引用,但与 <a class="reference internal" href="#c.PyTuple_SetItem" title="PyTuple_SetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyTuple_SetItem()</span></code></a> 不同,它 <em>不会</em> 丢弃对任何被替换项的引用;元组中位于 <em>pos</em> 位置的任何引用都将被泄漏。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c._PyTuple_Resize">
|
||
int <code class="sig-name descname">_PyTuple_Resize</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> **p</em>, Py_ssize_t<em> newsize</em><span class="sig-paren">)</span><a class="headerlink" href="#c._PyTuple_Resize" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>可以用于调整元组的大小。 <em>newsize</em> 将是元组的新长度。 因为元组 <em>被认为</em> 是不可变的,所以只有在对象仅有一个引用时,才应该使用它。 如果元组已经被代码的其他部分所引用,请不要使用此项。 元组在最后总是会增长或缩小。 把它看作是销毁旧元组并创建一个新元组,只会更有效。 成功时返回 <code class="docutils literal notranslate"><span class="pre">0</span></code> 。 客户端代码不应假定 <code class="docutils literal notranslate"><span class="pre">*p</span></code> 的结果值将与调用此函数之前的值相同。 如果替换了 <code class="docutils literal notranslate"><span class="pre">*p</span></code> 引用的对象,则原始的 <code class="docutils literal notranslate"><span class="pre">*p</span></code> 将被销毁。 失败时,返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code>,将 <code class="docutils literal notranslate"><span class="pre">*p</span></code> 设置为 <code class="docutils literal notranslate"><span class="pre">NULL</span></code>,并引发 <a class="reference internal" href="../library/exceptions.html#MemoryError" title="MemoryError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">MemoryError</span></code></a> 或者 <a class="reference internal" href="../library/exceptions.html#SystemError" title="SystemError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">SystemError</span></code></a>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyTuple_ClearFreeList">
|
||
int <code class="sig-name descname">PyTuple_ClearFreeList</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_ClearFreeList" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>清空释放列表。 返回所释放的条目数。</p>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
<section id="struct-sequence-objects">
|
||
<h1>结构序列对象<a class="headerlink" href="#struct-sequence-objects" title="永久链接至标题">¶</a></h1>
|
||
<p>结构序列对象是等价于 <a class="reference internal" href="../library/collections.html#collections.namedtuple" title="collections.namedtuple"><code class="xref py py-func docutils literal notranslate"><span class="pre">namedtuple()</span></code></a> 的 C 对象,即一个序列,其中的条目也可以通过属性访问。 要创建结构序列,你首先必须创建特定的结构序列类型。</p>
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_NewType">
|
||
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a>* <code class="sig-name descname">PyStructSequence_NewType</code><span class="sig-paren">(</span><a class="reference internal" href="#c.PyStructSequence_Desc" title="PyStructSequence_Desc">PyStructSequence_Desc</a><em> *desc</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyStructSequence_NewType" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>根据 <em>desc</em> 中的数据创建一个新的结构序列类型,如下所述。 可以使用 <a class="reference internal" href="#c.PyStructSequence_New" title="PyStructSequence_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyStructSequence_New()</span></code></a> 创建结果类型的实例。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_InitType">
|
||
void <code class="sig-name descname">PyStructSequence_InitType</code><span class="sig-paren">(</span><a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em> *type</em>, <a class="reference internal" href="#c.PyStructSequence_Desc" title="PyStructSequence_Desc">PyStructSequence_Desc</a><em> *desc</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyStructSequence_InitType" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>从 <em>desc</em> 就地初始化结构序列类型 <em>type</em>。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_InitType2">
|
||
int <code class="sig-name descname">PyStructSequence_InitType2</code><span class="sig-paren">(</span><a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em> *type</em>, <a class="reference internal" href="#c.PyStructSequence_Desc" title="PyStructSequence_Desc">PyStructSequence_Desc</a><em> *desc</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyStructSequence_InitType2" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>与 <code class="docutils literal notranslate"><span class="pre">PyStructSequence_InitType</span></code> 相同,但成功时返回 <code class="docutils literal notranslate"><span class="pre">0</span></code> ,失败时返回 <code class="docutils literal notranslate"><span class="pre">-1</span></code> 。</p>
|
||
<div class="versionadded">
|
||
<p><span class="versionmodified added">3.4 新版功能.</span></p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="type">
|
||
<dt id="c.PyStructSequence_Desc">
|
||
<code class="sig-name descname">PyStructSequence_Desc</code><a class="headerlink" href="#c.PyStructSequence_Desc" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>包含要创建的结构序列类型的元信息。</p>
|
||
<table class="docutils align-default">
|
||
<colgroup>
|
||
<col style="width: 22%" />
|
||
<col style="width: 34%" />
|
||
<col style="width: 44%" />
|
||
</colgroup>
|
||
<thead>
|
||
<tr class="row-odd"><th class="head"><p>域</p></th>
|
||
<th class="head"><p>C 类型</p></th>
|
||
<th class="head"><p>含意</p></th>
|
||
</tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">name</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code></p></td>
|
||
<td><p>结构序列类型的名称</p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">doc</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code></p></td>
|
||
<td><p>指向要忽略类型的文档字符串或 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 的指针</p></td>
|
||
</tr>
|
||
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">fields</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">PyStructSequence_Field</span> <span class="pre">*</span></code></p></td>
|
||
<td><p>指向以 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> 结尾的数组的指针,其字段名称为新类型</p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">n_in_sequence</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">int</span></code></p></td>
|
||
<td><p>Python侧可见的字段数(如果用作元组)</p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</dd></dl>
|
||
|
||
<dl class="type">
|
||
<dt id="c.PyStructSequence_Field">
|
||
<code class="sig-name descname">PyStructSequence_Field</code><a class="headerlink" href="#c.PyStructSequence_Field" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>描述结构序列的一个字段。 当结构序列被建模为元组时,所有字段的类型都是 <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>。 在 <a class="reference internal" href="#c.PyStructSequence_Desc" title="PyStructSequence_Desc"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyStructSequence_Desc</span></code></a> 的 <code class="xref py py-attr docutils literal notranslate"><span class="pre">fields</span></code> 数组中的索引确定了结构序列描述的是哪个字段。</p>
|
||
<table class="docutils align-default">
|
||
<colgroup>
|
||
<col style="width: 16%" />
|
||
<col style="width: 26%" />
|
||
<col style="width: 59%" />
|
||
</colgroup>
|
||
<thead>
|
||
<tr class="row-odd"><th class="head"><p>域</p></th>
|
||
<th class="head"><p>C 类型</p></th>
|
||
<th class="head"><p>含意</p></th>
|
||
</tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">name</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code></p></td>
|
||
<td><p>字段的名称或 <code class="docutils literal notranslate"><span class="pre">NULL</span></code> ,若要结束命名字段的列表,请设置为 <a class="reference internal" href="#c.PyStructSequence_UnnamedField" title="PyStructSequence_UnnamedField"><code class="xref c c-data docutils literal notranslate"><span class="pre">PyStructSequence_UnnamedField</span></code></a> 以保留未命名字段</p></td>
|
||
</tr>
|
||
<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">doc</span></code></p></td>
|
||
<td><p><code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code></p></td>
|
||
<td><p>要忽略的字段文档字符串或 <code class="docutils literal notranslate"><span class="pre">NULL</span></code></p></td>
|
||
</tr>
|
||
</tbody>
|
||
</table>
|
||
</dd></dl>
|
||
|
||
<dl class="var">
|
||
<dt id="c.PyStructSequence_UnnamedField">
|
||
char* <code class="sig-name descname">PyStructSequence_UnnamedField</code><a class="headerlink" href="#c.PyStructSequence_UnnamedField" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>字段名的特殊值将保持未命名状态。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_New">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyStructSequence_New</code><span class="sig-paren">(</span><a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em> *type</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyStructSequence_New" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: New reference.</em><p>创建 <em>type</em> 的实例,该实例必须使用 <a class="reference internal" href="#c.PyStructSequence_NewType" title="PyStructSequence_NewType"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyStructSequence_NewType()</span></code></a> 创建。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_GetItem">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyStructSequence_GetItem</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyStructSequence_GetItem" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p>返回 <em>p</em> 所指向的结构序列中,位于 <em>pos</em> 处的对象。不需要进行边界检查。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_GET_ITEM">
|
||
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="sig-name descname">PyStructSequence_GET_ITEM</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyStructSequence_GET_ITEM" title="永久链接至目标">¶</a></dt>
|
||
<dd><em class="refcount">Return value: Borrowed reference.</em><p><a class="reference internal" href="#c.PyStructSequence_GetItem" title="PyStructSequence_GetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyStructSequence_GetItem()</span></code></a> 的宏版本。</p>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_SetItem">
|
||
void <code class="sig-name descname">PyStructSequence_SetItem</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> pos</em>, <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.PyStructSequence_SetItem" title="永久链接至目标">¶</a></dt>
|
||
<dd><p>将结构序列 <em>p</em> 的索引 <em>pos</em> 处的字段设置为值 <em>o</em>。 与 <a class="reference internal" href="#c.PyTuple_SET_ITEM" title="PyTuple_SET_ITEM"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyTuple_SET_ITEM()</span></code></a> 一样,它应该只用于填充全新的实例。</p>
|
||
<div class="admonition note">
|
||
<p class="admonition-title">注解</p>
|
||
<p>这个函数“窃取”了指向 <em>o</em> 的一个引用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
<dl class="function">
|
||
<dt id="c.PyStructSequence_SET_ITEM">
|
||
void <code class="sig-name descname">PyStructSequence_SET_ITEM</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *p</em>, Py_ssize_t<em> *pos</em>, <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.PyStructSequence_SET_ITEM" title="永久链接至目标">¶</a></dt>
|
||
<dd><p><a class="reference internal" href="#c.PyStructSequence_SetItem" title="PyStructSequence_SetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyStructSequence_SetItem()</span></code></a> 的宏版本。</p>
|
||
<div class="admonition note">
|
||
<p class="admonition-title">注解</p>
|
||
<p>这个函数“窃取”了指向 <em>o</em> 的一个引用。</p>
|
||
</div>
|
||
</dd></dl>
|
||
|
||
</section>
|
||
|
||
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="sphinxsidebar" role="navigation" aria-label="main navigation">
|
||
<div class="sphinxsidebarwrapper">
|
||
<h3><a href="../contents.html">目录</a></h3>
|
||
<ul>
|
||
<li><a class="reference internal" href="#">元组对象</a></li>
|
||
<li><a class="reference internal" href="#struct-sequence-objects">结构序列对象</a></li>
|
||
</ul>
|
||
|
||
<h4>上一个主题</h4>
|
||
<p class="topless"><a href="unicode.html"
|
||
title="上一章">Unicode对象和编解码器</a></p>
|
||
<h4>下一个主题</h4>
|
||
<p class="topless"><a href="list.html"
|
||
title="下一章">列表对象</a></p>
|
||
<div role="note" aria-label="source link">
|
||
<h3>本页</h3>
|
||
<ul class="this-page-menu">
|
||
<li><a href="../bugs.html">报告 Bug</a></li>
|
||
<li>
|
||
<a href="https://github.com/python/cpython/blob/3.8/Doc/c-api/tuple.rst"
|
||
rel="nofollow">显示源代码
|
||
</a>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="clearer"></div>
|
||
</div>
|
||
<div class="related" role="navigation" aria-label="related navigation">
|
||
<h3>导航</h3>
|
||
<ul>
|
||
<li class="right" style="margin-right: 10px">
|
||
<a href="../genindex.html" title="总目录"
|
||
>索引</a></li>
|
||
<li class="right" >
|
||
<a href="../py-modindex.html" title="Python 模块索引"
|
||
>模块</a> |</li>
|
||
<li class="right" >
|
||
<a href="list.html" title="列表对象"
|
||
>下一页</a> |</li>
|
||
<li class="right" >
|
||
<a href="unicode.html" title="Unicode对象和编解码器"
|
||
>上一页</a> |</li>
|
||
|
||
<li><img src="../_static/py.svg" alt="python logo" style="vertical-align: middle; margin-top: -1px"/></li>
|
||
<li><a href="https://www.python.org/">Python</a> »</li>
|
||
<li class="switchers">
|
||
<div class="language_switcher_placeholder"></div>
|
||
<div class="version_switcher_placeholder"></div>
|
||
</li>
|
||
<li>
|
||
|
||
</li>
|
||
<li id="cpython-language-and-version">
|
||
<a href="../index.html">3.8.20 Documentation</a> »
|
||
</li>
|
||
|
||
<li class="nav-item nav-item-1"><a href="index.html" >Python/C API 参考手册</a> »</li>
|
||
<li class="nav-item nav-item-2"><a href="concrete.html" >具体的对象层</a> »</li>
|
||
<li class="right">
|
||
|
||
|
||
<div class="inline-search" role="search">
|
||
<form class="inline-search" action="../search.html" method="get">
|
||
<input placeholder="快速搜索" aria-label="快速搜索" type="text" name="q" />
|
||
<input type="submit" value="转向" />
|
||
<input type="hidden" name="check_keywords" value="yes" />
|
||
<input type="hidden" name="area" value="default" />
|
||
</form>
|
||
</div>
|
||
|
|
||
</li>
|
||
|
||
</ul>
|
||
</div>
|
||
<div class="footer">
|
||
© <a href="../copyright.html">版权所有</a> 2001-2024, Python Software Foundation.
|
||
<br />
|
||
This page is licensed under the Python Software Foundation License Version 2.
|
||
<br />
|
||
Examples, recipes, and other code in the documentation are additionally licensed under the Zero Clause BSD License.
|
||
<br />
|
||
|
||
<br />
|
||
|
||
The Python Software Foundation is a non-profit corporation.
|
||
<a href="https://www.python.org/psf/donations/">Please donate.</a>
|
||
<br />
|
||
<br />
|
||
|
||
最后更新于 12月 09, 2024.
|
||
<a href="https://docs.python.org/3/bugs.html">Found a bug</a>?
|
||
<br />
|
||
|
||
Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 2.4.4.
|
||
</div>
|
||
|
||
</body>
|
||
</html> |