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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="concrete.html" accesskey="U">Concrete Objects Layer</a> &#187;</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <div class="section" id="tuple-objects"> <span id="tupleobjects"></span><h1>Tuple Objects<a class="headerlink" href="#tuple-objects" title="Permalink to this headline">¶</a></h1> <span class="target" id="index-0"></span><dl class="type"> <dt id="c.PyTupleObject"> <code class="descname">PyTupleObject</code><a class="headerlink" href="#c.PyTupleObject" title="Permalink to this definition">¶</a></dt> <dd><p>This subtype of <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> represents a Python tuple object.</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="descname">PyTuple_Type</code><a class="headerlink" href="#c.PyTuple_Type" title="Permalink to this definition">¶</a></dt> <dd><p id="index-1">This instance of <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> represents the Python tuple type; it is the same object as <code class="docutils literal notranslate"><span class="pre">tuple</span></code> and <code class="docutils literal notranslate"><span class="pre">types.TupleType</span></code> in the Python layer..</p> </dd></dl> <dl class="function"> <dt id="c.PyTuple_Check"> int <code class="descname">PyTuple_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_Check" title="Permalink to this definition">¶</a></dt> <dd><p>Return true if <em>p</em> is a tuple object or an instance of a subtype of the tuple type.</p> <div class="versionchanged"> <p><span class="versionmodified">Changed in version 2.2: </span>Allowed subtypes to be accepted.</p> </div> </dd></dl> <dl class="function"> <dt id="c.PyTuple_CheckExact"> int <code class="descname">PyTuple_CheckExact</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_CheckExact" title="Permalink to this definition">¶</a></dt> <dd><p>Return true if <em>p</em> is a tuple object, but not an instance of a subtype of the tuple type.</p> <div class="versionadded"> <p><span class="versionmodified">New in version 2.2.</span></p> </div> </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="descname">PyTuple_New</code><span class="sig-paren">(</span>Py_ssize_t<em>&nbsp;len</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_New" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new tuple object of size <em>len</em>, or <em>NULL</em> on failure.</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>len</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </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="descname">PyTuple_Pack</code><span class="sig-paren">(</span>Py_ssize_t<em>&nbsp;n</em>, ...<span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_Pack" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Return a new tuple object of size <em>n</em>, or <em>NULL</em> on failure. The tuple values are initialized to the subsequent <em>n</em> C arguments pointing to Python objects. <code class="docutils literal notranslate"><span class="pre">PyTuple_Pack(2,</span> <span class="pre">a,</span> <span class="pre">b)</span></code> is equivalent to <code class="docutils literal notranslate"><span class="pre">Py_BuildValue(&quot;(OO)&quot;,</span> <span class="pre">a,</span> <span class="pre">b)</span></code>.</p> <div class="versionadded"> <p><span class="versionmodified">New in version 2.4.</span></p> </div> <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>n</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </dd></dl> <dl class="function"> <dt id="c.PyTuple_Size"> Py_ssize_t <code class="descname">PyTuple_Size</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_Size" title="Permalink to this definition">¶</a></dt> <dd><p>Take a pointer to a tuple object, and return the size of that tuple.</p> <div class="versionchanged"> <p><span class="versionmodified">Changed in version 2.5: </span>This function returned an <code class="xref c c-type docutils literal notranslate"><span class="pre">int</span></code> type. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </dd></dl> <dl class="function"> <dt id="c.PyTuple_GET_SIZE"> Py_ssize_t <code class="descname">PyTuple_GET_SIZE</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GET_SIZE" title="Permalink to this definition">¶</a></dt> <dd><p>Return the size of the tuple <em>p</em>, which must be non-<em>NULL</em> and point to a tuple; no error checking is performed.</p> <div class="versionchanged"> <p><span class="versionmodified">Changed in version 2.5: </span>This function returned an <code class="xref c c-type docutils literal notranslate"><span class="pre">int</span></code> type. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </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="descname">PyTuple_GetItem</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em>, Py_ssize_t<em>&nbsp;pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GetItem" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: Borrowed reference.</em><p>Return the object at position <em>pos</em> in the tuple pointed to by <em>p</em>. If <em>pos</em> is out of bounds, return <em>NULL</em> and sets an <a class="reference internal" href="../library/exceptions.html#exceptions.IndexError" title="exceptions.IndexError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">IndexError</span></code></a> exception.</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>pos</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </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="descname">PyTuple_GET_ITEM</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em>, Py_ssize_t<em>&nbsp;pos</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GET_ITEM" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: Borrowed reference.</em><p>Like <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>, but does no checking of its arguments.</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>pos</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </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="descname">PyTuple_GetSlice</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em>, Py_ssize_t<em>&nbsp;low</em>, Py_ssize_t<em>&nbsp;high</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_GetSlice" title="Permalink to this definition">¶</a></dt> <dd><em class="refcount">Return value: New reference.</em><p>Take a slice of the tuple pointed to by <em>p</em> from <em>low</em> to <em>high</em> and return it as a new tuple.</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>low</em> and <em>high</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </dd></dl> <dl class="function"> <dt id="c.PyTuple_SetItem"> int <code class="descname">PyTuple_SetItem</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em>, Py_ssize_t<em>&nbsp;pos</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_SetItem" title="Permalink to this definition">¶</a></dt> <dd><p>Insert a reference to object <em>o</em> at position <em>pos</em> of the tuple pointed to by <em>p</em>. Return <code class="docutils literal notranslate"><span class="pre">0</span></code> on success.</p> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">This function “steals” a reference to <em>o</em>.</p> </div> <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>pos</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </dd></dl> <dl class="function"> <dt id="c.PyTuple_SET_ITEM"> void <code class="descname">PyTuple_SET_ITEM</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*p</em>, Py_ssize_t<em>&nbsp;pos</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_SET_ITEM" title="Permalink to this definition">¶</a></dt> <dd><p>Like <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>, but does no error checking, and should <em>only</em> be used to fill in brand new tuples.</p> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">This function “steals” a reference to <em>o</em>.</p> </div> <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>pos</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </dd></dl> <dl class="function"> <dt id="c._PyTuple_Resize"> int <code class="descname">_PyTuple_Resize</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;**p</em>, Py_ssize_t<em>&nbsp;newsize</em><span class="sig-paren">)</span><a class="headerlink" href="#c._PyTuple_Resize" title="Permalink to this definition">¶</a></dt> <dd><p>Can be used to resize a tuple. <em>newsize</em> will be the new length of the tuple. Because tuples are <em>supposed</em> to be immutable, this should only be used if there is only one reference to the object. Do <em>not</em> use this if the tuple may already be known to some other part of the code. The tuple will always grow or shrink at the end. Think of this as destroying the old tuple and creating a new one, only more efficiently. Returns <code class="docutils literal notranslate"><span class="pre">0</span></code> on success. Client code should never assume that the resulting value of <code class="docutils literal notranslate"><span class="pre">*p</span></code> will be the same as before calling this function. If the object referenced by <code class="docutils literal notranslate"><span class="pre">*p</span></code> is replaced, the original <code class="docutils literal notranslate"><span class="pre">*p</span></code> is destroyed. On failure, returns <code class="docutils literal notranslate"><span class="pre">-1</span></code> and sets <code class="docutils literal notranslate"><span class="pre">*p</span></code> to <em>NULL</em>, and raises <a class="reference internal" href="../library/exceptions.html#exceptions.MemoryError" title="exceptions.MemoryError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">MemoryError</span></code></a> or <a class="reference internal" href="../library/exceptions.html#exceptions.SystemError" title="exceptions.SystemError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">SystemError</span></code></a>.</p> <div class="versionchanged"> <p><span class="versionmodified">Changed in version 2.2: </span>Removed unused third parameter, <em>last_is_sticky</em>.</p> </div> <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>newsize</em>. This might require changes in your code for properly supporting 64-bit systems.</p> </div> </dd></dl> <dl class="function"> <dt id="c.PyTuple_ClearFreeList"> int <code class="descname">PyTuple_ClearFreeList</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyTuple_ClearFreeList" title="Permalink to this definition">¶</a></dt> <dd><p>Clear the free list. Return the total number of freed items.</p> <div class="versionadded"> <p><span class="versionmodified">New in version 2.6.</span></p> </div> </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="buffer.html" title="previous chapter">Buffers and Memoryview Objects</a></p> <h4>Next topic</h4> <p class="topless"><a href="list.html" title="next chapter">List Objects</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../_sources/c-api/tuple.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="list.html" title="List Objects" >next</a> |</li> <li class="right" > <a href="buffer.html" title="Buffers and Memoryview Objects" >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="concrete.html" >Concrete Objects Layer</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>
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