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  <section id="object-protocol">
<span id="object"></span><h1>Object Protocol<a class="headerlink" href="#object-protocol" title="Permalink to this heading">¶</a></h1>
<dl class="c var">
<dt class="sig sig-object c" id="c.Py_NotImplemented">
<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">Py_NotImplemented</span></span></span><a class="headerlink" href="#c.Py_NotImplemented" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>The <code class="docutils literal notranslate"><span class="pre">NotImplemented</span></code> singleton, used to signal that an operation is
not implemented for the given type combination.</p>
<dl class="c macro">
<dt class="sig sig-object c" id="c.Py_RETURN_NOTIMPLEMENTED">
<span class="sig-name descname"><span class="n"><span class="pre">Py_RETURN_NOTIMPLEMENTED</span></span></span><a class="headerlink" href="#c.Py_RETURN_NOTIMPLEMENTED" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>Properly handle returning <a class="reference internal" href="#c.Py_NotImplemented" title="Py_NotImplemented"><code class="xref c c-data docutils literal notranslate"><span class="pre">Py_NotImplemented</span></code></a> from within a C
function (that is, create a new <a class="reference internal" href="../glossary.html#term-strong-reference"><span class="xref std std-term">strong reference</span></a>
to NotImplemented and return it).</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Print">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_Print</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="n"><span class="pre">FILE</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">fp</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">flags</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_Print" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>Print an object <em>o</em>, on file <em>fp</em>.  Returns <code class="docutils literal notranslate"><span class="pre">-1</span></code> on error.  The flags argument
is used to enable certain printing options.  The only option currently supported
is <code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_PRINT_RAW</span></code>; if given, the <a class="reference internal" href="../library/stdtypes.html#str" title="str"><code class="xref py py-func docutils literal notranslate"><span class="pre">str()</span></code></a> of the object is written
instead of the <a class="reference internal" href="../library/functions.html#repr" title="repr"><code class="xref py py-func docutils literal notranslate"><span class="pre">repr()</span></code></a>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_HasAttr">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_HasAttr</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>, <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">attr_name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_HasAttr" title="Bu tanım için kalıcı bağlantı">¶</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>Returns <code class="docutils literal notranslate"><span class="pre">1</span></code> if <em>o</em> has the attribute <em>attr_name</em>, and <code class="docutils literal notranslate"><span class="pre">0</span></code> otherwise.  This
is equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">hasattr(o,</span> <span class="pre">attr_name)</span></code>.  This function
always succeeds.</p>
<div class="admonition note">
<p class="admonition-title">Not</p>
<p>Exceptions that occur when this calls <a class="reference internal" href="../reference/datamodel.html#object.__getattr__" title="object.__getattr__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getattr__()</span></code></a> and
<a class="reference internal" href="../reference/datamodel.html#object.__getattribute__" title="object.__getattribute__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getattribute__()</span></code></a> methods are silently ignored.
For proper error handling, use <a class="reference internal" href="#c.PyObject_GetAttr" title="PyObject_GetAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetAttr()</span></code></a> instead.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_HasAttrString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_HasAttrString</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="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">attr_name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_HasAttrString" title="Bu tanım için kalıcı bağlantı">¶</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>This is the same as <a class="reference internal" href="#c.PyObject_HasAttr" title="PyObject_HasAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_HasAttr()</span></code></a>, but <em>attr_name</em> is
specified as a <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 encoded bytes string,
rather than a <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>.</p>
<div class="admonition note">
<p class="admonition-title">Not</p>
<p>Exceptions that occur when this calls <a class="reference internal" href="../reference/datamodel.html#object.__getattr__" title="object.__getattr__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getattr__()</span></code></a> and
<a class="reference internal" href="../reference/datamodel.html#object.__getattribute__" title="object.__getattribute__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__getattribute__()</span></code></a> methods or while creating the temporary
<a class="reference internal" href="../library/stdtypes.html#str" title="str"><code class="xref py py-class docutils literal notranslate"><span class="pre">str</span></code></a> object are silently ignored.
For proper error handling, use <a class="reference internal" href="#c.PyObject_GetAttrString" title="PyObject_GetAttrString"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetAttrString()</span></code></a> instead.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GetAttr">
<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">PyObject_GetAttr</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>, <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">attr_name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GetAttr" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>Retrieve an attribute named <em>attr_name</em> from object <em>o</em>. Returns the attribute
value on success, or <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.  This is the equivalent of the Python
expression <code class="docutils literal notranslate"><span class="pre">o.attr_name</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GetAttrString">
<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">PyObject_GetAttrString</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="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">attr_name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GetAttrString" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>This is the same as <a class="reference internal" href="#c.PyObject_GetAttr" title="PyObject_GetAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetAttr()</span></code></a>, but <em>attr_name</em> is
specified as a <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 encoded bytes string,
rather than a <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GenericGetAttr">
<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">PyObject_GenericGetAttr</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>, <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">name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GenericGetAttr" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>Generic attribute getter function that is meant to be put into a type
object’s <code class="docutils literal notranslate"><span class="pre">tp_getattro</span></code> slot.  It looks for a descriptor in the dictionary
of classes in the object’s MRO as well as an attribute in the object’s
<a class="reference internal" href="../library/stdtypes.html#object.__dict__" title="object.__dict__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__dict__</span></code></a> (if present).  As outlined in <a class="reference internal" href="../reference/datamodel.html#descriptors"><span class="std std-ref">Implementing Descriptors</span></a>,
data descriptors take preference over instance attributes, while non-data
descriptors don’t.  Otherwise, an <a class="reference internal" href="../library/exceptions.html#AttributeError" title="AttributeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">AttributeError</span></code></a> is raised.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_SetAttr">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_SetAttr</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>, <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">attr_name</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">v</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_SetAttr" title="Bu tanım için kalıcı bağlantı">¶</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>Set the value of the attribute named <em>attr_name</em>, for object <em>o</em>, to the value
<em>v</em>. Raise an exception and return <code class="docutils literal notranslate"><span class="pre">-1</span></code> on failure;
return <code class="docutils literal notranslate"><span class="pre">0</span></code> on success.  This is the equivalent of the Python statement
<code class="docutils literal notranslate"><span class="pre">o.attr_name</span> <span class="pre">=</span> <span class="pre">v</span></code>.</p>
<p>If <em>v</em> is <code class="docutils literal notranslate"><span class="pre">NULL</span></code>, the attribute is deleted. This behaviour is deprecated
in favour of using <a class="reference internal" href="#c.PyObject_DelAttr" title="PyObject_DelAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_DelAttr()</span></code></a>, but there are currently no
plans to remove it.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_SetAttrString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_SetAttrString</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="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">attr_name</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">v</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_SetAttrString" title="Bu tanım için kalıcı bağlantı">¶</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>This is the same as <a class="reference internal" href="#c.PyObject_SetAttr" title="PyObject_SetAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_SetAttr()</span></code></a>, but <em>attr_name</em> is
specified as a <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 encoded bytes string,
rather than a <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>.</p>
<p>If <em>v</em> is <code class="docutils literal notranslate"><span class="pre">NULL</span></code>, the attribute is deleted, but this feature is
deprecated in favour of using <a class="reference internal" href="#c.PyObject_DelAttrString" title="PyObject_DelAttrString"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_DelAttrString()</span></code></a>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GenericSetAttr">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_GenericSetAttr</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>, <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">name</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">value</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GenericSetAttr" title="Bu tanım için kalıcı bağlantı">¶</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>Generic attribute setter and deleter function that is meant
to be put into a type object’s <a class="reference internal" href="typeobj.html#c.PyTypeObject.tp_setattro" title="PyTypeObject.tp_setattro"><code class="xref c c-member docutils literal notranslate"><span class="pre">tp_setattro</span></code></a>
slot.  It looks for a data descriptor in the
dictionary of classes in the object’s MRO, and if found it takes preference
over setting or deleting the attribute in the instance dictionary. Otherwise, the
attribute is set or deleted in the object’s <a class="reference internal" href="../library/stdtypes.html#object.__dict__" title="object.__dict__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__dict__</span></code></a> (if present).
On success, <code class="docutils literal notranslate"><span class="pre">0</span></code> is returned, otherwise an <a class="reference internal" href="../library/exceptions.html#AttributeError" title="AttributeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">AttributeError</span></code></a>
is raised and <code class="docutils literal notranslate"><span class="pre">-1</span></code> is returned.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_DelAttr">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_DelAttr</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>, <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">attr_name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_DelAttr" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>Delete attribute named <em>attr_name</em>, for object <em>o</em>. Returns <code class="docutils literal notranslate"><span class="pre">-1</span></code> on failure.
This is the equivalent of the Python statement <code class="docutils literal notranslate"><span class="pre">del</span> <span class="pre">o.attr_name</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_DelAttrString">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_DelAttrString</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="k"><span class="pre">const</span></span><span class="w"> </span><span class="kt"><span class="pre">char</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">attr_name</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_DelAttrString" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>This is the same as <a class="reference internal" href="#c.PyObject_DelAttr" title="PyObject_DelAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_DelAttr()</span></code></a>, but <em>attr_name</em> is
specified as a <span class="c-expr sig sig-inline c"><span class="k">const</span><span class="w"> </span><span class="kt">char</span><span class="p">*</span></span> UTF-8 encoded bytes string,
rather than a <span class="c-expr sig sig-inline c"><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n">PyObject</span></a><span class="p">*</span></span>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GenericGetDict">
<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">PyObject_GenericGetDict</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="kt"><span class="pre">void</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">context</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GenericGetDict" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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> since version 3.10.</em><p>A generic implementation for the getter of a <code class="docutils literal notranslate"><span class="pre">__dict__</span></code> descriptor. It
creates the dictionary if necessary.</p>
<p>This function may also be called to get the <a class="reference internal" href="../library/stdtypes.html#object.__dict__" title="object.__dict__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__dict__</span></code></a>
of the object <em>o</em>. Pass <code class="docutils literal notranslate"><span class="pre">NULL</span></code> for <em>context</em> when calling it.
Since this function may need to allocate memory for the
dictionary, it may be more efficient to call <a class="reference internal" href="#c.PyObject_GetAttr" title="PyObject_GetAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetAttr()</span></code></a>
when accessing an attribute on the object.</p>
<p>On failure, returns <code class="docutils literal notranslate"><span class="pre">NULL</span></code> with an exception set.</p>
<div class="versionadded">
<p><span class="versionmodified added">3.3 sürümünde geldi.</span></p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GenericSetDict">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_GenericSetDict</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>, <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">value</span></span>, <span class="kt"><span class="pre">void</span></span><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">context</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GenericSetDict" title="Bu tanım için kalıcı bağlantı">¶</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 3.7.</em><p>A generic implementation for the setter of a <code class="docutils literal notranslate"><span class="pre">__dict__</span></code> descriptor. This
implementation does not allow the dictionary to be deleted.</p>
<div class="versionadded">
<p><span class="versionmodified added">3.3 sürümünde geldi.</span></p>
<dl class="c function">
<dt class="sig sig-object c" id="c._PyObject_GetDictPtr">
<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="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">_PyObject_GetDictPtr</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">obj</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c._PyObject_GetDictPtr" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>Return a pointer to <a class="reference internal" href="../library/stdtypes.html#object.__dict__" title="object.__dict__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__dict__</span></code></a> of the object <em>obj</em>.
If there is no <code class="docutils literal notranslate"><span class="pre">__dict__</span></code>, return <code class="docutils literal notranslate"><span class="pre">NULL</span></code> without setting an exception.</p>
<p>This function may need to allocate memory for the
dictionary, so it may be more efficient to call <a class="reference internal" href="#c.PyObject_GetAttr" title="PyObject_GetAttr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetAttr()</span></code></a>
when accessing an attribute on the object.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_RichCompare">
<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">PyObject_RichCompare</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">o1</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">o2</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">opid</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_RichCompare" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>Compare the values of <em>o1</em> and <em>o2</em> using the operation specified by <em>opid</em>,
which must be one of <a class="reference internal" href="typeobj.html#c.Py_LT" title="Py_LT"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_LT</span></code></a>, <a class="reference internal" href="typeobj.html#c.Py_LE" title="Py_LE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_LE</span></code></a>, <a class="reference internal" href="typeobj.html#c.Py_EQ" title="Py_EQ"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_EQ</span></code></a>,
<a class="reference internal" href="typeobj.html#c.Py_NE" title="Py_NE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_NE</span></code></a>, <a class="reference internal" href="typeobj.html#c.Py_GT" title="Py_GT"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_GT</span></code></a>, or <a class="reference internal" href="typeobj.html#c.Py_GE" title="Py_GE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_GE</span></code></a>, corresponding to <code class="docutils literal notranslate"><span class="pre">&lt;</span></code>,
<code class="docutils literal notranslate"><span class="pre">&lt;=</span></code>, <code class="docutils literal notranslate"><span class="pre">==</span></code>, <code class="docutils literal notranslate"><span class="pre">!=</span></code>, <code class="docutils literal notranslate"><span class="pre">&gt;</span></code>, or <code class="docutils literal notranslate"><span class="pre">&gt;=</span></code> respectively. This is the equivalent of
the Python expression <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">op</span> <span class="pre">o2</span></code>, where <code class="docutils literal notranslate"><span class="pre">op</span></code> is the operator corresponding
to <em>opid</em>. Returns the value of the comparison on success, or <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_RichCompareBool">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_RichCompareBool</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">o1</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">o2</span></span>, <span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="n"><span class="pre">opid</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_RichCompareBool" title="Bu tanım için kalıcı bağlantı">¶</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>Compare the values of <em>o1</em> and <em>o2</em> using the operation specified by <em>opid</em>,
which must be one of <a class="reference internal" href="typeobj.html#c.Py_LT" title="Py_LT"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_LT</span></code></a>, <a class="reference internal" href="typeobj.html#c.Py_LE" title="Py_LE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_LE</span></code></a>, <a class="reference internal" href="typeobj.html#c.Py_EQ" title="Py_EQ"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_EQ</span></code></a>,
<a class="reference internal" href="typeobj.html#c.Py_NE" title="Py_NE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_NE</span></code></a>, <a class="reference internal" href="typeobj.html#c.Py_GT" title="Py_GT"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_GT</span></code></a>, or <a class="reference internal" href="typeobj.html#c.Py_GE" title="Py_GE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_GE</span></code></a>, corresponding to <code class="docutils literal notranslate"><span class="pre">&lt;</span></code>,
<code class="docutils literal notranslate"><span class="pre">&lt;=</span></code>, <code class="docutils literal notranslate"><span class="pre">==</span></code>, <code class="docutils literal notranslate"><span class="pre">!=</span></code>, <code class="docutils literal notranslate"><span class="pre">&gt;</span></code>, or <code class="docutils literal notranslate"><span class="pre">&gt;=</span></code> respectively. Returns <code class="docutils literal notranslate"><span class="pre">-1</span></code> on error,
<code class="docutils literal notranslate"><span class="pre">0</span></code> if the result is false, <code class="docutils literal notranslate"><span class="pre">1</span></code> otherwise. This is the equivalent of the
Python expression <code class="docutils literal notranslate"><span class="pre">o1</span> <span class="pre">op</span> <span class="pre">o2</span></code>, where <code class="docutils literal notranslate"><span class="pre">op</span></code> is the operator corresponding to
<em>opid</em>.</p>
<div class="admonition note">
<p class="admonition-title">Not</p>
<p>If <em>o1</em> and <em>o2</em> are the same object, <a class="reference internal" href="#c.PyObject_RichCompareBool" title="PyObject_RichCompareBool"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_RichCompareBool()</span></code></a>
will always return <code class="docutils literal notranslate"><span class="pre">1</span></code> for <a class="reference internal" href="typeobj.html#c.Py_EQ" title="Py_EQ"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_EQ</span></code></a> and <code class="docutils literal notranslate"><span class="pre">0</span></code> for <a class="reference internal" href="typeobj.html#c.Py_NE" title="Py_NE"><code class="xref c c-macro docutils literal notranslate"><span class="pre">Py_NE</span></code></a>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Format">
<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">PyObject_Format</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">obj</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">format_spec</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_Format" title="Bu tanım için kalıcı bağlantı">¶</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>Format <em>obj</em> using <em>format_spec</em>. This is equivalent to the Python
expression <code class="docutils literal notranslate"><span class="pre">format(obj,</span> <span class="pre">format_spec)</span></code>.</p>
<p><em>format_spec</em> may be <code class="docutils literal notranslate"><span class="pre">NULL</span></code>. In this case the call is equivalent
to <code class="docutils literal notranslate"><span class="pre">format(obj)</span></code>.
Returns the formatted string on success, <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Repr">
<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">PyObject_Repr</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.PyObject_Repr" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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 id="index-0">Compute a string representation of object <em>o</em>.  Returns the string
representation on success, <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.  This is the equivalent of the
Python expression <code class="docutils literal notranslate"><span class="pre">repr(o)</span></code>.  Called by the <a class="reference internal" href="../library/functions.html#repr" title="repr"><code class="xref py py-func docutils literal notranslate"><span class="pre">repr()</span></code></a> built-in function.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">3.4 sürümünde değişti: </span>This function now includes a debug assertion to help ensure that it
does not silently discard an active exception.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_ASCII">
<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">PyObject_ASCII</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.PyObject_ASCII" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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 id="index-1">As <a class="reference internal" href="#c.PyObject_Repr" title="PyObject_Repr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Repr()</span></code></a>, compute a string representation of object <em>o</em>, but
escape the non-ASCII characters in the string returned by
<a class="reference internal" href="#c.PyObject_Repr" title="PyObject_Repr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Repr()</span></code></a> with <code class="docutils literal notranslate"><span class="pre">\x</span></code>, <code class="docutils literal notranslate"><span class="pre">\u</span></code> or <code class="docutils literal notranslate"><span class="pre">\U</span></code> escapes.  This generates
a string similar to that returned by <a class="reference internal" href="#c.PyObject_Repr" title="PyObject_Repr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Repr()</span></code></a> in Python 2.
Called by the <a class="reference internal" href="../library/functions.html#ascii" title="ascii"><code class="xref py py-func docutils literal notranslate"><span class="pre">ascii()</span></code></a> built-in function.</p>
<span class="target" id="index-2"></span></dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Str">
<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">PyObject_Str</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.PyObject_Str" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>Compute a string representation of object <em>o</em>.  Returns the string
representation on success, <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.  This is the equivalent of the
Python expression <code class="docutils literal notranslate"><span class="pre">str(o)</span></code>.  Called by the <a class="reference internal" href="../library/stdtypes.html#str" title="str"><code class="xref py py-func docutils literal notranslate"><span class="pre">str()</span></code></a> built-in function
and, therefore, by the <a class="reference internal" href="../library/functions.html#print" title="print"><code class="xref py py-func docutils literal notranslate"><span class="pre">print()</span></code></a> function.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">3.4 sürümünde değişti: </span>This function now includes a debug assertion to help ensure that it
does not silently discard an active exception.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Bytes">
<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">PyObject_Bytes</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.PyObject_Bytes" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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 id="index-3">Compute a bytes representation of object <em>o</em>.  <code class="docutils literal notranslate"><span class="pre">NULL</span></code> is returned on
failure and a bytes object on success.  This is equivalent to the Python
expression <code class="docutils literal notranslate"><span class="pre">bytes(o)</span></code>, when <em>o</em> is not an integer.  Unlike <code class="docutils literal notranslate"><span class="pre">bytes(o)</span></code>,
a TypeError is raised when <em>o</em> is an integer instead of a zero-initialized
bytes object.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_IsSubclass">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_IsSubclass</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">derived</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">cls</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_IsSubclass" title="Bu tanım için kalıcı bağlantı">¶</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>Return <code class="docutils literal notranslate"><span class="pre">1</span></code> if the class <em>derived</em> is identical to or derived from the class
<em>cls</em>, otherwise return <code class="docutils literal notranslate"><span class="pre">0</span></code>.  In case of an error, return <code class="docutils literal notranslate"><span class="pre">-1</span></code>.</p>
<p>If <em>cls</em> is a tuple, the check will be done against every entry in <em>cls</em>.
The result will be <code class="docutils literal notranslate"><span class="pre">1</span></code> when at least one of the checks returns <code class="docutils literal notranslate"><span class="pre">1</span></code>,
otherwise it will be <code class="docutils literal notranslate"><span class="pre">0</span></code>.</p>
<p>If <em>cls</em> has a <a class="reference internal" href="../reference/datamodel.html#class.__subclasscheck__" title="class.__subclasscheck__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__subclasscheck__()</span></code></a> method, it will be called to
determine the subclass status as described in <span class="target" id="index-4"></span><a class="pep reference external" href="https://peps.python.org/pep-3119/"><strong>PEP 3119</strong></a>.  Otherwise,
<em>derived</em> is a subclass of <em>cls</em> if it is a direct or indirect subclass,
i.e. contained in <code class="docutils literal notranslate"><span class="pre">cls.__mro__</span></code>.</p>
<p>Normally only class objects, i.e. instances of <a class="reference internal" href="../library/functions.html#type" title="type"><code class="xref py py-class docutils literal notranslate"><span class="pre">type</span></code></a> or a derived
class, are considered classes.  However, objects can override this by having
a <a class="reference internal" href="../library/stdtypes.html#class.__bases__" title="class.__bases__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__bases__</span></code></a> attribute (which must be a tuple of base classes).</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_IsInstance">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_IsInstance</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">inst</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">cls</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_IsInstance" title="Bu tanım için kalıcı bağlantı">¶</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>Return <code class="docutils literal notranslate"><span class="pre">1</span></code> if <em>inst</em> is an instance of the class <em>cls</em> or a subclass of
<em>cls</em>, or <code class="docutils literal notranslate"><span class="pre">0</span></code> if not.  On error, returns <code class="docutils literal notranslate"><span class="pre">-1</span></code> and sets an exception.</p>
<p>If <em>cls</em> is a tuple, the check will be done against every entry in <em>cls</em>.
The result will be <code class="docutils literal notranslate"><span class="pre">1</span></code> when at least one of the checks returns <code class="docutils literal notranslate"><span class="pre">1</span></code>,
otherwise it will be <code class="docutils literal notranslate"><span class="pre">0</span></code>.</p>
<p>If <em>cls</em> has a <a class="reference internal" href="../reference/datamodel.html#class.__instancecheck__" title="class.__instancecheck__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__instancecheck__()</span></code></a> method, it will be called to
determine the subclass status as described in <span class="target" id="index-5"></span><a class="pep reference external" href="https://peps.python.org/pep-3119/"><strong>PEP 3119</strong></a>.  Otherwise, <em>inst</em>
is an instance of <em>cls</em> if its class is a subclass of <em>cls</em>.</p>
<p>An instance <em>inst</em> can override what is considered its class by having a
<a class="reference internal" href="../library/stdtypes.html#instance.__class__" title="instance.__class__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__class__</span></code></a> attribute.</p>
<p>An object <em>cls</em> can override if it is considered a class, and what its base
classes are, by having a <a class="reference internal" href="../library/stdtypes.html#class.__bases__" title="class.__bases__"><code class="xref py py-attr docutils literal notranslate"><span class="pre">__bases__</span></code></a> attribute (which must be a tuple
of base classes).</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Hash">
<span class="n"><span class="pre">Py_hash_t</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_Hash</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.PyObject_Hash" title="Bu tanım için kalıcı bağlantı">¶</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 id="index-6">Compute and return the hash value of an object <em>o</em>.  On failure, return <code class="docutils literal notranslate"><span class="pre">-1</span></code>.
This is the equivalent of the Python expression <code class="docutils literal notranslate"><span class="pre">hash(o)</span></code>.</p>
<div class="versionchanged">
<p><span class="versionmodified changed">3.2 sürümünde değişti: </span>The return type is now Py_hash_t.  This is a signed integer the same size
as <a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><code class="xref c c-type docutils literal notranslate"><span class="pre">Py_ssize_t</span></code></a>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_HashNotImplemented">
<span class="n"><span class="pre">Py_hash_t</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_HashNotImplemented</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.PyObject_HashNotImplemented" title="Bu tanım için kalıcı bağlantı">¶</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>Set a <a class="reference internal" href="../library/exceptions.html#TypeError" title="TypeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">TypeError</span></code></a> indicating that <code class="docutils literal notranslate"><span class="pre">type(o)</span></code> is not <a class="reference internal" href="../glossary.html#term-hashable"><span class="xref std std-term">hashable</span></a> and return <code class="docutils literal notranslate"><span class="pre">-1</span></code>.
This function receives special treatment when stored in a <code class="docutils literal notranslate"><span class="pre">tp_hash</span></code> slot,
allowing a type to explicitly indicate to the interpreter that it is not
hashable.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_IsTrue">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_IsTrue</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.PyObject_IsTrue" title="Bu tanım için kalıcı bağlantı">¶</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>Returns <code class="docutils literal notranslate"><span class="pre">1</span></code> if the object <em>o</em> is considered to be true, and <code class="docutils literal notranslate"><span class="pre">0</span></code> otherwise.
This is equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">not</span> <span class="pre">not</span> <span class="pre">o</span></code>.  On failure, return
<code class="docutils literal notranslate"><span class="pre">-1</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Not">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_Not</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.PyObject_Not" title="Bu tanım için kalıcı bağlantı">¶</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>Returns <code class="docutils literal notranslate"><span class="pre">0</span></code> if the object <em>o</em> is considered to be true, and <code class="docutils literal notranslate"><span class="pre">1</span></code> otherwise.
This is equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">not</span> <span class="pre">o</span></code>.  On failure, return
<code class="docutils literal notranslate"><span class="pre">-1</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Type">
<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">PyObject_Type</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.PyObject_Type" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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 id="index-7">When <em>o</em> is non-<code class="docutils literal notranslate"><span class="pre">NULL</span></code>, returns a type object corresponding to the object type
of object <em>o</em>. On failure, raises <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> and returns <code class="docutils literal notranslate"><span class="pre">NULL</span></code>.  This
is equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">type(o)</span></code>.
This function creates a new <a class="reference internal" href="../glossary.html#term-strong-reference"><span class="xref std std-term">strong reference</span></a> to the return value.
There’s really no reason to use this
function instead of the <a class="reference internal" href="structures.html#c.Py_TYPE" title="Py_TYPE"><code class="xref c c-func docutils literal notranslate"><span class="pre">Py_TYPE()</span></code></a> function, which returns a
pointer of type <span class="c-expr sig sig-inline c"><a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n">PyTypeObject</span></a><span class="p">*</span></span>, except when a new
<a class="reference internal" href="../glossary.html#term-strong-reference"><span class="xref std std-term">strong reference</span></a> is needed.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_TypeCheck">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_TypeCheck</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>, <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="p"><span class="pre">*</span></span><span class="n"><span class="pre">type</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_TypeCheck" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>Return non-zero if the object <em>o</em> is of type <em>type</em> or a subtype of <em>type</em>, and
<code class="docutils literal notranslate"><span class="pre">0</span></code> otherwise.  Both parameters must be non-<code class="docutils literal notranslate"><span class="pre">NULL</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Size">
<a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><span class="n"><span class="pre">Py_ssize_t</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_Size</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.PyObject_Size" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dt class="sig sig-object c" id="c.PyObject_Length">
<a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><span class="n"><span class="pre">Py_ssize_t</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_Length</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.PyObject_Length" title="Bu tanım için kalıcı bağlantı">¶</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 id="index-8">Return the length of object <em>o</em>.  If the object <em>o</em> provides either the sequence
and mapping protocols, the sequence length is returned.  On error, <code class="docutils literal notranslate"><span class="pre">-1</span></code> is
returned.  This is the equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">len(o)</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_LengthHint">
<a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><span class="n"><span class="pre">Py_ssize_t</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_LengthHint</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>, <a class="reference internal" href="intro.html#c.Py_ssize_t" title="Py_ssize_t"><span class="n"><span class="pre">Py_ssize_t</span></span></a><span class="w"> </span><span class="n"><span class="pre">defaultvalue</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_LengthHint" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><p>Return an estimated length for the object <em>o</em>. First try to return its
actual length, then an estimate using <a class="reference internal" href="../reference/datamodel.html#object.__length_hint__" title="object.__length_hint__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__length_hint__()</span></code></a>, and
finally return the default value. On error return <code class="docutils literal notranslate"><span class="pre">-1</span></code>. This is the
equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">operator.length_hint(o,</span> <span class="pre">defaultvalue)</span></code>.</p>
<div class="versionadded">
<p><span class="versionmodified added">3.4 sürümünde geldi.</span></p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GetItem">
<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">PyObject_GetItem</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>, <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">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_GetItem" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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 element of <em>o</em> corresponding to the object <em>key</em> or <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.
This is the equivalent of the Python expression <code class="docutils literal notranslate"><span class="pre">o[key]</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_SetItem">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_SetItem</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>, <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">key</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">v</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_SetItem" title="Bu tanım için kalıcı bağlantı">¶</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>Map the object <em>key</em> to the value <em>v</em>.  Raise an exception and
return <code class="docutils literal notranslate"><span class="pre">-1</span></code> on failure; return <code class="docutils literal notranslate"><span class="pre">0</span></code> on success.  This is the
equivalent of the Python statement <code class="docutils literal notranslate"><span class="pre">o[key]</span> <span class="pre">=</span> <span class="pre">v</span></code>.  This function <em>does
not</em> steal a reference to <em>v</em>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_DelItem">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyObject_DelItem</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>, <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">key</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyObject_DelItem" title="Bu tanım için kalıcı bağlantı">¶</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>Remove the mapping for the object <em>key</em> from the object <em>o</em>.  Return <code class="docutils literal notranslate"><span class="pre">-1</span></code>
on failure.  This is equivalent to the Python statement <code class="docutils literal notranslate"><span class="pre">del</span> <span class="pre">o[key]</span></code>.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_Dir">
<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">PyObject_Dir</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.PyObject_Dir" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>This is equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">dir(o)</span></code>, returning a (possibly
empty) list of strings appropriate for the object argument, or <code class="docutils literal notranslate"><span class="pre">NULL</span></code> if there
was an error.  If the argument is <code class="docutils literal notranslate"><span class="pre">NULL</span></code>, this is like the Python <code class="docutils literal notranslate"><span class="pre">dir()</span></code>,
returning the names of the current locals; in this case, if no execution frame
is active then <code class="docutils literal notranslate"><span class="pre">NULL</span></code> is returned but <a class="reference internal" href="exceptions.html#c.PyErr_Occurred" title="PyErr_Occurred"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyErr_Occurred()</span></code></a> will return false.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GetIter">
<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">PyObject_GetIter</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.PyObject_GetIter" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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>This is equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">iter(o)</span></code>. It returns a new
iterator for the object argument, or the object  itself if the object is already
an iterator.  Raises <a class="reference internal" href="../library/exceptions.html#TypeError" title="TypeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">TypeError</span></code></a> and returns <code class="docutils literal notranslate"><span class="pre">NULL</span></code> if the object cannot be
iterated.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyObject_GetAIter">
<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">PyObject_GetAIter</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.PyObject_GetAIter" title="Bu tanım için kalıcı bağlantı">¶</a><br /></dt>
<dd><em class="refcount">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> since version 3.10.</em><p>This is the equivalent to the Python expression <code class="docutils literal notranslate"><span class="pre">aiter(o)</span></code>. Takes an
<code class="xref py py-class docutils literal notranslate"><span class="pre">AsyncIterable</span></code> object and returns an <code class="xref py py-class docutils literal notranslate"><span class="pre">AsyncIterator</span></code> for it.
This is typically a new iterator but if the argument is an
<code class="xref py py-class docutils literal notranslate"><span class="pre">AsyncIterator</span></code>, this returns itself. Raises <a class="reference internal" href="../library/exceptions.html#TypeError" title="TypeError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">TypeError</span></code></a> and
returns <code class="docutils literal notranslate"><span class="pre">NULL</span></code> if the object cannot be iterated.</p>
<div class="versionadded">
<p><span class="versionmodified added">3.10 sürümünde geldi.</span></p>
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