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  • Committer: Dave Kuhlman
  • Date: 2017-04-15 16:24:56 UTC
  • Revision ID: dkuhlman@davekuhlman.org-20170415162456-iav9vozzg4iwqwv3
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python-2.7.11-docs-html/c-api/abstract.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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  <head>
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    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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    <title>Abstract Objects Layer &mdash; Python 2.7.11 documentation</title>
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    <link rel="stylesheet" href="../_static/classic.css" type="text/css" />
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    <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
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    <script type="text/javascript">
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      var DOCUMENTATION_OPTIONS = {
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        URL_ROOT:    '../',
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        VERSION:     '2.7.11',
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        COLLAPSE_INDEX: false,
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        FILE_SUFFIX: '.html',
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        HAS_SOURCE:  true
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      };
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    </script>
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    <script type="text/javascript" src="../_static/jquery.js"></script>
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    <script type="text/javascript" src="../_static/underscore.js"></script>
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          title="Search within Python 2.7.11 documentation"
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          href="../_static/opensearch.xml"/>
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    <link rel="author" title="About these documents" href="../about.html" />
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    <link rel="copyright" title="Copyright" href="../copyright.html" />
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    <link rel="top" title="Python 2.7.11 documentation" href="../contents.html" />
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    <link rel="up" title="Python/C API Reference Manual" href="index.html" />
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    <link rel="next" title="Object Protocol" href="object.html" />
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    <link rel="prev" title="Codec registry and support functions" href="codec.html" />
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             accesskey="I">index</a></li>
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             >modules</a> |</li>
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             accesskey="N">next</a> |</li>
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        <li><a href="https://www.python.org/">Python</a> &raquo;</li>
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          <a href="../index.html">Documentation</a> &raquo;
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          <li class="nav-item nav-item-1"><a href="index.html" accesskey="U">Python/C API Reference Manual</a> &raquo;</li> 
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          <div class="body" role="main">
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  <div class="section" id="abstract-objects-layer">
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<span id="abstract"></span><h1>Abstract Objects Layer<a class="headerlink" href="#abstract-objects-layer" title="Permalink to this headline">¶</a></h1>
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<p>The functions in this chapter interact with Python objects regardless of their
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type, or with wide classes of object types (e.g. all numerical types, or all
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sequence types).  When used on object types for which they do not apply, they
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will raise a Python exception.</p>
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<p>It is not possible to use these functions on objects that are not properly
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initialized, such as a list object that has been created by <a class="reference internal" href="list.html#c.PyList_New" title="PyList_New"><code class="xref c c-func docutils literal"><span class="pre">PyList_New()</span></code></a>,
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but whose items have not been set to some non-<code class="docutils literal"><span class="pre">NULL</span></code> value yet.</p>
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<div class="toctree-wrapper compound">
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<ul>
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<li class="toctree-l1"><a class="reference internal" href="object.html">Object Protocol</a></li>
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<li class="toctree-l1"><a class="reference internal" href="number.html">Number Protocol</a></li>
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<li class="toctree-l1"><a class="reference internal" href="sequence.html">Sequence Protocol</a></li>
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<li class="toctree-l1"><a class="reference internal" href="mapping.html">Mapping Protocol</a></li>
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<li class="toctree-l1"><a class="reference internal" href="iter.html">Iterator Protocol</a></li>
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<li class="toctree-l1"><a class="reference internal" href="objbuffer.html">Old Buffer Protocol</a></li>
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</ul>
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</div>
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</div>
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                        title="previous chapter">Codec registry and support functions</a></p>
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  <h4>Next topic</h4>
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  <p class="topless"><a href="object.html"
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                        title="next chapter">Object Protocol</a></p>
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         rel="nofollow">Show Source</a></li>
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             >index</a></li>
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             >modules</a> |</li>
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    &copy; <a href="../copyright.html">Copyright</a> 1990-2016, Python Software Foundation.
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    Last updated on Jan 23, 2016.
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