Python314/Doc/html/c-api/iterator.html - master - shapovalovav/AI-Agent

Python314/Doc/html/c-api/iterator.html
570 строк39 KB
Anatoly1147
first_commit
11 июл 2026, 17:02
11 июл 2026, 17:02f6c78bd
<!DOCTYPE html>

<html lang="en" data-content_root="../">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
<meta property="og:title" content="Iterator Objects" />
<meta property="og:type" content="website" />
<meta property="og:url" content="https://docs.python.org/3/c-api/iterator.html" />
<meta property="og:site_name" content="Python documentation" />
<meta property="og:description" content="Python provides two general-purpose iterator objects. The first, a sequence iterator, works with an arbitrary sequence supporting the__getitem__() method. The second works with a callable object an..." />
<meta property="og:image" content="_static/og-image.png" />
<meta property="og:image:alt" content="Python documentation" />
<meta name="description" content="Python provides two general-purpose iterator objects. The first, a sequence iterator, works with an arbitrary sequence supporting the__getitem__() method. The second works with a callable object an..." />
<meta name="theme-color" content="#3776ab">
<meta property="og:image:width" content="200">
<meta property="og:image:height" content="200">

    <title>Iterator Objects &#8212; Python 3.14.4 documentation</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
    
    <link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=b86133f3" />
    <link rel="stylesheet" type="text/css" href="../_static/classic.css?v=234b1a7c" />
    <link rel="stylesheet" type="text/css" href="../_static/pydoctheme.css?v=82640b3f" />
    <link id="pygments_dark_css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css" href="../_static/pygments_dark.css?v=5349f25f" />
    
    <script src="../_static/documentation_options.js?v=1885ab2e"></script>
    <script src="../_static/doctools.js?v=9bcbadda"></script>
    <script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
    
    <script src="../_static/sidebar.js"></script>
    
    <link rel="search" type="application/opensearchdescription+xml"
          title="Search within Python 3.14.4 documentation"
          href="../_static/opensearch.xml"/>
    <link rel="author" title="About these documents" href="../about.html" />
    <link rel="index" title="Index" href="../genindex.html" />
    <link rel="search" title="Search" href="../search.html" />
    <link rel="copyright" title="Copyright" href="../copyright.html" />
    <link rel="next" title="Descriptor Objects" href="descriptor.html" />
    <link rel="prev" title="Module Objects" href="module.html" />
    
      
      <link rel="canonical" href="https://docs.python.org/3/c-api/iterator.html">
      
    

    
    <style>
      @media only screen {
        table.full-width-table {
            width: 100%;
        }
      }
    </style>
<link rel="stylesheet" href="../_static/pydoctheme_dark.css" media="(prefers-color-scheme: dark)" id="pydoctheme_dark_css">
    <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>
            <script type="text/javascript" src="../_static/search-focus.js"></script>
            <script type="text/javascript" src="../_static/themetoggle.js"></script> 
            <script type="text/javascript" src="../_static/rtd_switcher.js"></script>
            <meta name="readthedocs-addons-api-version" content="1">

  </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">
    <nav class="nav-content" role="navigation">
        <label for="menuToggler" class="toggler__label">
            <span></span>
        </label>
        <span class="nav-items-wrapper">
            <a href="https://www.python.org/" class="nav-logo">
                <img src="../_static/py.svg" alt="Python logo">
            </a>
            <span class="version_switcher_placeholder"></span>
            <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" fill="currentColor" 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"></path>
                </svg>
                <input placeholder="Quick search" aria-label="Quick search" type="search" name="q">
                <input type="submit" value="Go">
            </form>
        </span>
    </nav>
    <div class="menu-wrapper">
        <nav class="menu" role="navigation" aria-label="main navigation">
            <div class="language_switcher_placeholder"></div>
            
<label class="theme-selector-label">
    Theme
    <select class="theme-selector" oninput="activateTheme(this.value)">
        <option value="auto" selected>Auto</option>
        <option value="light">Light</option>
        <option value="dark">Dark</option>
    </select>
</label>
  <div>
    <h3><a href="../contents.html">Table of Contents</a></h3>
    <ul>
<li><a class="reference internal" href="#">Iterator Objects</a><ul>
<li><a class="reference internal" href="#range-objects">Range Objects</a></li>
<li><a class="reference internal" href="#builtin-iterator-types">Builtin Iterator Types</a></li>
<li><a class="reference internal" href="#other-iterator-objects">Other Iterator Objects</a></li>
</ul>
</li>
</ul>

  </div>
  <div>
    <h4>Previous topic</h4>
    <p class="topless"><a href="module.html"
                          title="previous chapter">Module Objects</a></p>
  </div>
  <div>
    <h4>Next topic</h4>
    <p class="topless"><a href="descriptor.html"
                          title="next chapter">Descriptor Objects</a></p>
  </div>
  <script>
    document.addEventListener('DOMContentLoaded', () => {
        const title = document.querySelector('meta[property="og:title"]').content;
        const elements = document.querySelectorAll('.improvepage');
        const pageurl = window.location.href.split('?')[0];
        elements.forEach(element => {
            const url = new URL(element.href.split('?')[0].replace("-nojs", ""));
            url.searchParams.set('pagetitle', title);
            url.searchParams.set('pageurl', pageurl);
            url.searchParams.set('pagesource', "c-api/iterator.rst");
            element.href = url.toString();
        });
    });
  </script>
  <div role="note" aria-label="source link">
    <h3>This page</h3>
    <ul class="this-page-menu">
      <li><a href="../bugs.html">Report a bug</a></li>
      <li><a class="improvepage" href="../improve-page-nojs.html">Improve this page</a></li>
      <li>
        <a href="https://github.com/python/cpython/blob/main/Doc/c-api/iterator.rst?plain=1"
            rel="nofollow">Show source
        </a>
      </li>
      
    </ul>
  </div>
        </nav>
    </div>
</div>

  
    <div class="related" role="navigation" aria-label="Related">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             accesskey="I">index</a></li>
        <li class="right" >
          <a href="../py-modindex.html" title="Python Module Index"
             >modules</a> |</li>
        <li class="right" >
          <a href="descriptor.html" title="Descriptor Objects"
             accesskey="N">next</a> |</li>
        <li class="right" >
          <a href="module.html" title="Module Objects"
             accesskey="P">previous</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> &#187;</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">3.14.4 Documentation</a> &#187;
    </li>

          <li class="nav-item nav-item-1"><a href="index.html" >Python/C API reference manual</a> &#187;</li>
          <li class="nav-item nav-item-2"><a href="concrete.html" accesskey="U">Concrete Objects Layer</a> &#187;</li>
        <li class="nav-item nav-item-this"><a href="">Iterator Objects</a></li>
                <li class="right">
                    

    <div class="inline-search" role="search">
        <form class="inline-search" action="../search.html" method="get">
          <input placeholder="Quick search" aria-label="Quick search" type="search" name="q" id="search-box">
          <input type="submit" value="Go">
        </form>
    </div>
                     |
                </li>
            <li class="right">
<label class="theme-selector-label">
    Theme
    <select class="theme-selector" oninput="activateTheme(this.value)">
        <option value="auto" selected>Auto</option>
        <option value="light">Light</option>
        <option value="dark">Dark</option>
    </select>
</label> |</li>
            
      </ul>
    </div>    

    <div class="document">
      <div class="documentwrapper">
        <div class="bodywrapper">
          <div class="body" role="main">
            
  <section id="iterator-objects">
<span id="id1"></span><h1>Iterator Objects<a class="headerlink" href="#iterator-objects" title="Link to this heading">¶</a></h1>
<p>Python provides two general-purpose iterator objects.  The first, a sequence
iterator, works with an arbitrary sequence supporting the <a class="reference internal" href="../reference/datamodel.html#object.__getitem__" title="object.__getitem__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getitem__()</span></code></a>
method.  The second works with a callable object and a sentinel value, calling
the callable for each item in the sequence, and ending the iteration when the
sentinel value is returned.</p>
<dl class="c var">
<dt class="sig sig-object c" id="c.PySeqIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySeqIter_Type</span></span></span><a class="headerlink" href="#c.PySeqIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em><p>Type object for iterator objects returned by <a class="reference internal" href="#c.PySeqIter_New" title="PySeqIter_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PySeqIter_New()</span></code></a> and the
one-argument form of the <a class="reference internal" href="../library/functions.html#iter" title="iter"><code class="xref py py-func docutils literal notranslate"><span class="pre">iter()</span></code></a> built-in function for built-in sequence
types.</p>
</dd></dl>

<dl class="c function">
<dt class="sig sig-object c" id="c.PySeqIter_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySeqIter_Check</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">op</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySeqIter_Check" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if the type of <em>op</em> is <a class="reference internal" href="#c.PySeqIter_Type" title="PySeqIter_Type"><code class="xref c c-data docutils literal notranslate"><span class="pre">PySeqIter_Type</span></code></a>.  This function
always succeeds.</p>
</dd></dl>

<dl class="c function">
<dt class="sig sig-object c" id="c.PySeqIter_New">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">PySeqIter_New</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">seq</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySeqIter_New" title="Link to this definition">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">Return value: New reference.</em><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em><p>Return an iterator that works with a general sequence object, <em>seq</em>.  The
iteration ends when the sequence raises <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> for the subscripting
operation.</p>
</dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyCallIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyCallIter_Type</span></span></span><a class="headerlink" href="#c.PyCallIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em><p>Type object for iterator objects returned by <a class="reference internal" href="#c.PyCallIter_New" title="PyCallIter_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyCallIter_New()</span></code></a> and the
two-argument form of the <a class="reference internal" href="../library/functions.html#iter" title="iter"><code class="xref py py-func docutils literal notranslate"><span class="pre">iter()</span></code></a> built-in function.</p>
</dd></dl>

<dl class="c function">
<dt class="sig sig-object c" id="c.PyCallIter_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyCallIter_Check</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">op</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyCallIter_Check" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if the type of <em>op</em> is <a class="reference internal" href="#c.PyCallIter_Type" title="PyCallIter_Type"><code class="xref c c-data docutils literal notranslate"><span class="pre">PyCallIter_Type</span></code></a>.  This
function always succeeds.</p>
</dd></dl>

<dl class="c function">
<dt class="sig sig-object c" id="c.PyCallIter_New">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">PyCallIter_New</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">callable</span></span>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">sentinel</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyCallIter_New" title="Link to this definition">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">Return value: New reference.</em><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em><p>Return a new iterator.  The first parameter, <em>callable</em>, can be any Python
callable object that can be called with no parameters; each call to it should
return the next item in the iteration.  When <em>callable</em> returns a value equal to
<em>sentinel</em>, the iteration will be terminated.</p>
</dd></dl>

<section id="range-objects">
<h2>Range Objects<a class="headerlink" href="#range-objects" title="Link to this heading">¶</a></h2>
<dl class="c var">
<dt class="sig sig-object c" id="c.PyRange_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyRange_Type</span></span></span><a class="headerlink" href="#c.PyRange_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em><p>The type object for <a class="reference internal" href="../library/stdtypes.html#range" title="range"><code class="xref py py-class docutils literal notranslate"><span class="pre">range</span></code></a> objects.</p>
</dd></dl>

<dl class="c function">
<dt class="sig sig-object c" id="c.PyRange_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyRange_Check</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">o</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyRange_Check" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if the object <em>o</em> is an instance of a <a class="reference internal" href="../library/stdtypes.html#range" title="range"><code class="xref py py-class docutils literal notranslate"><span class="pre">range</span></code></a> object.
This function always succeeds.</p>
</dd></dl>

</section>
<section id="builtin-iterator-types">
<h2>Builtin Iterator Types<a class="headerlink" href="#builtin-iterator-types" title="Link to this heading">¶</a></h2>
<p>These are built-in iteration types that are included in Python’s C API, but
provide no additional functions. They are here for completeness.</p>
<table class="docutils align-default">
<thead>
<tr class="row-odd"><th class="head"><p>C type</p></th>
<th class="head"><p>Python type</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><dl class="c var">
<dt class="sig sig-object c" id="c.PyEnum_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyEnum_Type</span></span></span><a class="headerlink" href="#c.PyEnum_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

</td>
<td><p><a class="reference internal" href="../library/functions.html#enumerate" title="enumerate"><code class="xref py py-class docutils literal notranslate"><span class="pre">enumerate</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="c var">
<dt class="sig sig-object c" id="c.PyFilter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyFilter_Type</span></span></span><a class="headerlink" href="#c.PyFilter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

</td>
<td><p><a class="reference internal" href="../library/functions.html#filter" title="filter"><code class="xref py py-class docutils literal notranslate"><span class="pre">filter</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="c var">
<dt class="sig sig-object c" id="c.PyMap_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyMap_Type</span></span></span><a class="headerlink" href="#c.PyMap_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

</td>
<td><p><a class="reference internal" href="../library/functions.html#map" title="map"><code class="xref py py-class docutils literal notranslate"><span class="pre">map</span></code></a></p></td>
</tr>
<tr class="row-odd"><td><dl class="c var">
<dt class="sig sig-object c" id="c.PyReversed_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyReversed_Type</span></span></span><a class="headerlink" href="#c.PyReversed_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

</td>
<td><p><a class="reference internal" href="../library/functions.html#reversed" title="reversed"><code class="xref py py-class docutils literal notranslate"><span class="pre">reversed</span></code></a></p></td>
</tr>
<tr class="row-even"><td><dl class="c var">
<dt class="sig sig-object c" id="c.PyZip_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyZip_Type</span></span></span><a class="headerlink" href="#c.PyZip_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

</td>
<td><p><a class="reference internal" href="../library/functions.html#zip" title="zip"><code class="xref py py-class docutils literal notranslate"><span class="pre">zip</span></code></a></p></td>
</tr>
</tbody>
</table>
</section>
<section id="other-iterator-objects">
<h2>Other Iterator Objects<a class="headerlink" href="#other-iterator-objects" title="Link to this heading">¶</a></h2>
<dl class="c var">
<dt class="sig sig-object c" id="c.PyByteArrayIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyByteArrayIter_Type</span></span></span><a class="headerlink" href="#c.PyByteArrayIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyBytesIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyBytesIter_Type</span></span></span><a class="headerlink" href="#c.PyBytesIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyListIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyListIter_Type</span></span></span><a class="headerlink" href="#c.PyListIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyListRevIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyListRevIter_Type</span></span></span><a class="headerlink" href="#c.PyListRevIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PySetIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySetIter_Type</span></span></span><a class="headerlink" href="#c.PySetIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyTupleIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyTupleIter_Type</span></span></span><a class="headerlink" href="#c.PyTupleIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyRangeIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyRangeIter_Type</span></span></span><a class="headerlink" href="#c.PyRangeIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyLongRangeIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyLongRangeIter_Type</span></span></span><a class="headerlink" href="#c.PyLongRangeIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyDictIterKey_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyDictIterKey_Type</span></span></span><a class="headerlink" href="#c.PyDictIterKey_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyDictRevIterKey_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyDictRevIterKey_Type</span></span></span><a class="headerlink" href="#c.PyDictRevIterKey_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a> since version 3.8.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyDictIterValue_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyDictIterValue_Type</span></span></span><a class="headerlink" href="#c.PyDictIterValue_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyDictRevIterValue_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyDictRevIterValue_Type</span></span></span><a class="headerlink" href="#c.PyDictRevIterValue_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a> since version 3.8.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyDictIterItem_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyDictIterItem_Type</span></span></span><a class="headerlink" href="#c.PyDictIterItem_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a>.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyDictRevIterItem_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyDictRevIterItem_Type</span></span></span><a class="headerlink" href="#c.PyDictRevIterItem_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> Part of the <a class="reference internal" href="stable.html#stable"><span class="std std-ref">Stable ABI</span></a> since version 3.8.</em></dd></dl>

<dl class="c var">
<dt class="sig sig-object c" id="c.PyODictIter_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyODictIter_Type</span></span></span><a class="headerlink" href="#c.PyODictIter_Type" title="Link to this definition">¶</a><br /></dt>
<dd><p>Type objects for iterators of various built-in objects.</p>
<p>Do not create instances of these directly; prefer calling
<a class="reference internal" href="object.html#c.PyObject_GetIter" title="PyObject_GetIter"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetIter()</span></code></a> instead.</p>
<p>Note that there is no guarantee that a given built-in type uses a given iterator
type. For example, iterating over <a class="reference internal" href="../library/stdtypes.html#range" title="range"><code class="xref py py-class docutils literal notranslate"><span class="pre">range</span></code></a> will use one of two iterator
types depending on the size of the range. Other types may start using a
similar scheme in the future, without warning.</p>
</dd></dl>

</section>
</section>


            <div class="clearer"></div>
          </div>
        </div>
      </div>
      <div class="sphinxsidebar" role="navigation" aria-label="Main">
        <div class="sphinxsidebarwrapper">
  <div>
    <h3><a href="../contents.html">Table of Contents</a></h3>
    <ul>
<li><a class="reference internal" href="#">Iterator Objects</a><ul>
<li><a class="reference internal" href="#range-objects">Range Objects</a></li>
<li><a class="reference internal" href="#builtin-iterator-types">Builtin Iterator Types</a></li>
<li><a class="reference internal" href="#other-iterator-objects">Other Iterator Objects</a></li>
</ul>
</li>
</ul>

  </div>
  <div>
    <h4>Previous topic</h4>
    <p class="topless"><a href="module.html"
                          title="previous chapter">Module Objects</a></p>
  </div>
  <div>
    <h4>Next topic</h4>
    <p class="topless"><a href="descriptor.html"
                          title="next chapter">Descriptor Objects</a></p>
  </div>
  <script>
    document.addEventListener('DOMContentLoaded', () => {
        const title = document.querySelector('meta[property="og:title"]').content;
        const elements = document.querySelectorAll('.improvepage');
        const pageurl = window.location.href.split('?')[0];
        elements.forEach(element => {
            const url = new URL(element.href.split('?')[0].replace("-nojs", ""));
            url.searchParams.set('pagetitle', title);
            url.searchParams.set('pageurl', pageurl);
            url.searchParams.set('pagesource', "c-api/iterator.rst");
            element.href = url.toString();
        });
    });
  </script>
  <div role="note" aria-label="source link">
    <h3>This page</h3>
    <ul class="this-page-menu">
      <li><a href="../bugs.html">Report a bug</a></li>
      <li><a class="improvepage" href="../improve-page-nojs.html">Improve this page</a></li>
      <li>
        <a href="https://github.com/python/cpython/blob/main/Doc/c-api/iterator.rst?plain=1"
            rel="nofollow">Show source
        </a>
      </li>
      
    </ul>
  </div>
        </div>
<div id="sidebarbutton" title="Collapse sidebar">
<span>«</span>
</div>

      </div>
      <div class="clearer"></div>
    </div>  
    <div class="related" role="navigation" aria-label="Related">
      <h3>Navigation</h3>
      <ul>
        <li class="right" style="margin-right: 10px">
          <a href="../genindex.html" title="General Index"
             >index</a></li>
        <li class="right" >
          <a href="../py-modindex.html" title="Python Module Index"
             >modules</a> |</li>
        <li class="right" >
          <a href="descriptor.html" title="Descriptor Objects"
             >next</a> |</li>
        <li class="right" >
          <a href="module.html" title="Module Objects"
             >previous</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> &#187;</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">3.14.4 Documentation</a> &#187;
    </li>

          <li class="nav-item nav-item-1"><a href="index.html" >Python/C API reference manual</a> &#187;</li>
          <li class="nav-item nav-item-2"><a href="concrete.html" >Concrete Objects Layer</a> &#187;</li>
        <li class="nav-item nav-item-this"><a href="">Iterator Objects</a></li>
                <li class="right">
                    

    <div class="inline-search" role="search">
        <form class="inline-search" action="../search.html" method="get">
          <input placeholder="Quick search" aria-label="Quick search" type="search" name="q" id="search-box">
          <input type="submit" value="Go">
        </form>
    </div>
                     |
                </li>
            <li class="right">
<label class="theme-selector-label">
    Theme
    <select class="theme-selector" oninput="activateTheme(this.value)">
        <option value="auto" selected>Auto</option>
        <option value="light">Light</option>
        <option value="dark">Dark</option>
    </select>
</label> |</li>
            
      </ul>
    </div>  
    <div class="footer">
    &copy; <a href="../copyright.html">Copyright</a> 2001 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>
    
      See <a href="/license.html">History and License</a> for more information.<br>
    
    
    <br>

    The Python Software Foundation is a non-profit corporation.
<a href="https://www.python.org/psf/donations/">Please donate.</a>
<br>
    <br>
      Last updated on Apr 07, 2026 (13:52 UTC).
    
      <a href="/bugs.html">Found a bug</a>?
    
    <br>

    Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 8.2.3.
    </div>

  </body>
</html>