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<section id="set-objects">
<span id="setobjects"></span><h1>Set Objects<a class="headerlink" href="#set-objects" title="Link to this heading">¶</a></h1>
<p id="index-0">This section details the public API for <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> and <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a>
objects. Any functionality not listed below is best accessed using either
the abstract object protocol (including <a class="reference internal" href="call.html#c.PyObject_CallMethod" title="PyObject_CallMethod"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_CallMethod()</span></code></a>,
<a class="reference internal" href="object.html#c.PyObject_RichCompareBool" title="PyObject_RichCompareBool"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_RichCompareBool()</span></code></a>, <a class="reference internal" href="object.html#c.PyObject_Hash" title="PyObject_Hash"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Hash()</span></code></a>,
<a class="reference internal" href="object.html#c.PyObject_Repr" title="PyObject_Repr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Repr()</span></code></a>, <a class="reference internal" href="object.html#c.PyObject_IsTrue" title="PyObject_IsTrue"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_IsTrue()</span></code></a>, <a class="reference internal" href="object.html#c.PyObject_Print" title="PyObject_Print"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_Print()</span></code></a>, and
<a class="reference internal" href="object.html#c.PyObject_GetIter" title="PyObject_GetIter"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyObject_GetIter()</span></code></a>) or the abstract number protocol (including
<a class="reference internal" href="number.html#c.PyNumber_And" title="PyNumber_And"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_And()</span></code></a>, <a class="reference internal" href="number.html#c.PyNumber_Subtract" title="PyNumber_Subtract"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_Subtract()</span></code></a>, <a class="reference internal" href="number.html#c.PyNumber_Or" title="PyNumber_Or"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_Or()</span></code></a>,
<a class="reference internal" href="number.html#c.PyNumber_Xor" title="PyNumber_Xor"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_Xor()</span></code></a>, <a class="reference internal" href="number.html#c.PyNumber_InPlaceAnd" title="PyNumber_InPlaceAnd"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_InPlaceAnd()</span></code></a>,
<a class="reference internal" href="number.html#c.PyNumber_InPlaceSubtract" title="PyNumber_InPlaceSubtract"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_InPlaceSubtract()</span></code></a>, <a class="reference internal" href="number.html#c.PyNumber_InPlaceOr" title="PyNumber_InPlaceOr"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_InPlaceOr()</span></code></a>, and
<a class="reference internal" href="number.html#c.PyNumber_InPlaceXor" title="PyNumber_InPlaceXor"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyNumber_InPlaceXor()</span></code></a>).</p>
<dl class="c type">
<dt class="sig sig-object c" id="c.PySetObject">
<span class="k"><span class="pre">type</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySetObject</span></span></span><a class="headerlink" href="#c.PySetObject" title="Link to this definition">¶</a><br /></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> is used to hold the internal data for both
<a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> and <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> objects. It is like a <a class="reference internal" href="dict.html#c.PyDictObject" title="PyDictObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyDictObject</span></code></a>
in that it is a fixed size for small sets (much like tuple storage) and will
point to a separate, variable sized block of memory for medium and large sized
sets (much like list storage). None of the fields of this structure should be
considered public and all are subject to change. All access should be done through
the documented API rather than by manipulating the values in the structure.</p>
</dd></dl>
<dl class="c var">
<dt class="sig sig-object c" id="c.PySet_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_Type</span></span></span><a class="headerlink" href="#c.PySet_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><p>This is an 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> representing the Python
<a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> type.</p>
</dd></dl>
<dl class="c var">
<dt class="sig sig-object c" id="c.PyFrozenSet_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><span class="n"><span class="pre">PyTypeObject</span></span></a><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyFrozenSet_Type</span></span></span><a class="headerlink" href="#c.PyFrozenSet_Type" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><p>This is an 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> representing the Python
<a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> type.</p>
</dd></dl>
<p>The following type check macros work on pointers to any Python object. Likewise,
the constructor functions work with any iterable Python object.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_Check</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">p</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_Check" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if <em>p</em> is a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> object or an instance of a subtype.
This function always succeeds.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyFrozenSet_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyFrozenSet_Check</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">p</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFrozenSet_Check" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if <em>p</em> is a <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> object or an instance of a
subtype. This function always succeeds.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyAnySet_Check">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyAnySet_Check</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">p</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyAnySet_Check" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if <em>p</em> is a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> object, a <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> object, or an
instance of a subtype. This function always succeeds.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_CheckExact">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_CheckExact</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">p</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_CheckExact" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if <em>p</em> is a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> object but not an instance of a
subtype. This function always succeeds.</p>
<div class="versionadded">
<p><span class="versionmodified added">Added in version 3.10.</span></p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyAnySet_CheckExact">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyAnySet_CheckExact</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">p</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyAnySet_CheckExact" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if <em>p</em> is a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> object or a <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> object but
not an instance of a subtype. This function always succeeds.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyFrozenSet_CheckExact">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PyFrozenSet_CheckExact</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">p</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFrozenSet_CheckExact" title="Link to this definition">¶</a><br /></dt>
<dd><p>Return true if <em>p</em> is a <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> object but not an instance of a
subtype. This function always succeeds.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_New">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">PySet_New</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">iterable</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_New" title="Link to this definition">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">مقدار بازگشتی: مرجع جدید.</em><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-shared"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-shared"><span class="std std-ref">Safe for concurrent use on the same object</span></a>.</em><p>Return a new <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> containing objects returned by the <em>iterable</em>. The
<em>iterable</em> may be <code class="docutils literal notranslate"><span class="pre">NULL</span></code> to create a new empty set. Return the new set on
success or <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure. Raise <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> if <em>iterable</em> is not
actually iterable. The constructor is also useful for copying a set
(<code class="docutils literal notranslate"><span class="pre">c=set(s)</span></code>).</p>
<div class="admonition note">
<p class="admonition-title">توجه</p>
<p>The operation is atomic on <a class="reference internal" href="../glossary.html#term-free-threaded-build"><span class="xref std std-term">free threading</span></a>
when <em>iterable</em> is a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a>, <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> or <a class="reference internal" href="../library/stdtypes.html#dict" title="dict"><code class="xref py py-class docutils literal notranslate"><span class="pre">dict</span></code></a>.</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PyFrozenSet_New">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="sig-name descname"><span class="n"><span class="pre">PyFrozenSet_New</span></span></span><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><span class="n"><span class="pre">PyObject</span></span></a><span class="w"> </span><span class="p"><span class="pre">*</span></span><span class="n"><span class="pre">iterable</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PyFrozenSet_New" title="Link to this definition">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">مقدار بازگشتی: مرجع جدید.</em><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-shared"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-shared"><span class="std std-ref">Safe for concurrent use on the same object</span></a>.</em><p>Return a new <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> containing objects returned by the <em>iterable</em>.
The <em>iterable</em> may be <code class="docutils literal notranslate"><span class="pre">NULL</span></code> to create a new empty frozenset. Return the new
set on success or <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure. Raise <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> if <em>iterable</em> is
not actually iterable.</p>
<div class="admonition note">
<p class="admonition-title">توجه</p>
<p>The operation is atomic on <a class="reference internal" href="../glossary.html#term-free-threaded-build"><span class="xref std std-term">free threading</span></a>
when <em>iterable</em> is a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a>, <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> or <a class="reference internal" href="../library/stdtypes.html#dict" title="dict"><code class="xref py py-class docutils literal notranslate"><span class="pre">dict</span></code></a>.</p>
</div>
</dd></dl>
<p>The following functions and macros are available for instances of <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a>
or <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> or instances of their subtypes.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_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">PySet_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">anyset</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_Size" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-atomic"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-atomic"><span class="std std-ref">Atomic</span></a>.</em><p id="index-1">Return the length of a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> or <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> object. Equivalent to
<code class="docutils literal notranslate"><span class="pre">len(anyset)</span></code>. Raises a <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> if <em>anyset</em> is not a
<code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code>, <code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code>, or an instance of a subtype.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_GET_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">PySet_GET_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">anyset</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_GET_SIZE" title="Link to this definition">¶</a><br /></dt>
<dd><em class="threadsafety threadsafety-atomic"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-atomic"><span class="std std-ref">Atomic</span></a>.</em><p>Macro form of <a class="reference internal" href="#c.PySet_Size" title="PySet_Size"><code class="xref c c-func docutils literal notranslate"><span class="pre">PySet_Size()</span></code></a> without error checking.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_Contains">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_Contains</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">anyset</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.PySet_Contains" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-shared"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-shared"><span class="std std-ref">Safe for concurrent use on the same object</span></a>.</em><p>Return <code class="docutils literal notranslate"><span class="pre">1</span></code> if found, <code class="docutils literal notranslate"><span class="pre">0</span></code> if not found, and <code class="docutils literal notranslate"><span class="pre">-1</span></code> if an error is encountered. Unlike
the Python <a class="reference internal" href="../reference/datamodel.html#object.__contains__" title="object.__contains__"><code class="xref py py-meth docutils literal notranslate"><span class="pre">__contains__()</span></code></a> method, this function does not automatically
convert unhashable sets into temporary frozensets. Raise 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> if
the <em>key</em> is unhashable. Raise <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> if <em>anyset</em> is not a
<a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a>, <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a>, or an instance of a subtype.</p>
<div class="admonition note">
<p class="admonition-title">توجه</p>
<p>The operation is atomic on <a class="reference internal" href="../glossary.html#term-free-threaded-build"><span class="xref std std-term">free threading</span></a>
when <em>key</em> is <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>, <a class="reference internal" href="../library/functions.html#int" title="int"><code class="xref py py-class docutils literal notranslate"><span class="pre">int</span></code></a>, <a class="reference internal" href="../library/functions.html#float" title="float"><code class="xref py py-class docutils literal notranslate"><span class="pre">float</span></code></a>, <a class="reference internal" href="../library/functions.html#bool" title="bool"><code class="xref py py-class docutils literal notranslate"><span class="pre">bool</span></code></a> or <a class="reference internal" href="../library/stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>.</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_Add">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_Add</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">set</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.PySet_Add" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-shared"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-shared"><span class="std std-ref">Safe for concurrent use on the same object</span></a>.</em><p>Add <em>key</em> to a <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> instance. Also works with <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a>
instances (like <a class="reference internal" href="tuple.html#c.PyTuple_SetItem" title="PyTuple_SetItem"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyTuple_SetItem()</span></code></a> it can be used to fill in the values
of brand new frozensets before they are exposed to other code). Return <code class="docutils literal notranslate"><span class="pre">0</span></code> on
success or <code class="docutils literal notranslate"><span class="pre">-1</span></code> on failure. Raise 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> if the <em>key</em> is
unhashable. Raise a <a class="reference internal" href="../library/exceptions.html#MemoryError" title="MemoryError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">MemoryError</span></code></a> if there is no room to grow. Raise a
<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> if <em>set</em> is not an instance of <code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code> or its
subtype.</p>
<div class="admonition note">
<p class="admonition-title">توجه</p>
<p>The operation is atomic on <a class="reference internal" href="../glossary.html#term-free-threaded-build"><span class="xref std std-term">free threading</span></a>
when <em>key</em> is <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>, <a class="reference internal" href="../library/functions.html#int" title="int"><code class="xref py py-class docutils literal notranslate"><span class="pre">int</span></code></a>, <a class="reference internal" href="../library/functions.html#float" title="float"><code class="xref py py-class docutils literal notranslate"><span class="pre">float</span></code></a>, <a class="reference internal" href="../library/functions.html#bool" title="bool"><code class="xref py py-class docutils literal notranslate"><span class="pre">bool</span></code></a> or <a class="reference internal" href="../library/stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>.</p>
</div>
</dd></dl>
<p>The following functions are available for instances of <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> or its
subtypes but not for instances of <a class="reference internal" href="../library/stdtypes.html#frozenset" title="frozenset"><code class="xref py py-class docutils literal notranslate"><span class="pre">frozenset</span></code></a> or its subtypes.</p>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_Discard">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_Discard</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">set</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.PySet_Discard" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-shared"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-shared"><span class="std std-ref">Safe for concurrent use on the same object</span></a>.</em><p>Return <code class="docutils literal notranslate"><span class="pre">1</span></code> if found and removed, <code class="docutils literal notranslate"><span class="pre">0</span></code> if not found (no action taken), and <code class="docutils literal notranslate"><span class="pre">-1</span></code> if an
error is encountered. Does not raise <a class="reference internal" href="../library/exceptions.html#KeyError" title="KeyError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">KeyError</span></code></a> for missing keys. Raise 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> if the <em>key</em> is unhashable. Unlike the Python <a class="reference internal" href="../library/stdtypes.html#set.discard" title="set.discard"><code class="xref py py-meth docutils literal notranslate"><span class="pre">discard()</span></code></a>
method, this function does not automatically convert unhashable sets into
temporary frozensets. Raise <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> if <em>set</em> is not an
instance of <a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> or its subtype.</p>
<div class="admonition note">
<p class="admonition-title">توجه</p>
<p>The operation is atomic on <a class="reference internal" href="../glossary.html#term-free-threaded-build"><span class="xref std std-term">free threading</span></a>
when <em>key</em> is <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>, <a class="reference internal" href="../library/functions.html#int" title="int"><code class="xref py py-class docutils literal notranslate"><span class="pre">int</span></code></a>, <a class="reference internal" href="../library/functions.html#float" title="float"><code class="xref py py-class docutils literal notranslate"><span class="pre">float</span></code></a>, <a class="reference internal" href="../library/functions.html#bool" title="bool"><code class="xref py py-class docutils literal notranslate"><span class="pre">bool</span></code></a> or <a class="reference internal" href="../library/stdtypes.html#bytes" title="bytes"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytes</span></code></a>.</p>
</div>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_Pop">
<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">PySet_Pop</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">set</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_Pop" title="Link to this definition">¶</a><br /></dt>
<dd><em class="refcount return_new_ref">مقدار بازگشتی: مرجع جدید.</em><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-atomic"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-atomic"><span class="std std-ref">Atomic</span></a>.</em><p>Return a new reference to an arbitrary object in the <em>set</em>, and removes the
object from the <em>set</em>. Return <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure. Raise <a class="reference internal" href="../library/exceptions.html#KeyError" title="KeyError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">KeyError</span></code></a> if the
set is empty. Raise a <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> if <em>set</em> is not an instance of
<a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> or its subtype.</p>
</dd></dl>
<dl class="c function">
<dt class="sig sig-object c" id="c.PySet_Clear">
<span class="kt"><span class="pre">int</span></span><span class="w"> </span><span class="sig-name descname"><span class="n"><span class="pre">PySet_Clear</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">set</span></span><span class="sig-paren">)</span><a class="headerlink" href="#c.PySet_Clear" title="Link to this definition">¶</a><br /></dt>
<dd><em class="stableabi"> قسمتی از <a class="reference internal" href="stable.html#stable"><span class="std std-ref">ABI پایدار</span></a>.</em><em class="threadsafety threadsafety-atomic"> Thread safety: <a class="reference internal" href="../library/threadsafety.html#threadsafety-level-atomic"><span class="std std-ref">Atomic</span></a>.</em><p>Empty an existing set of all elements. Return <code class="docutils literal notranslate"><span class="pre">0</span></code> on
success. Return <code class="docutils literal notranslate"><span class="pre">-1</span></code> and raise <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> if <em>set</em> is not an instance of
<a class="reference internal" href="../library/stdtypes.html#set" title="set"><code class="xref py py-class docutils literal notranslate"><span class="pre">set</span></code></a> or its subtype.</p>
<div class="admonition note">
<p class="admonition-title">توجه</p>
<p>In the <a class="reference internal" href="../glossary.html#term-free-threaded-build"><span class="xref std std-term">free-threaded build</span></a>, the set is emptied before its entries
are cleared, so other threads will observe an empty set rather than
intermediate states.</p>
</div>
</dd></dl>
<section id="deprecated-api">
<h2>Deprecated API<a class="headerlink" href="#deprecated-api" title="Link to this heading">¶</a></h2>
<dl class="c macro">
<dt class="sig sig-object c" id="c.PySet_MINSIZE">
<span class="sig-name descname"><span class="n"><span class="pre">PySet_MINSIZE</span></span></span><a class="headerlink" href="#c.PySet_MINSIZE" title="Link to this definition">¶</a><br /></dt>
<dd><p>A <a class="reference internal" href="../glossary.html#term-soft-deprecated"><span class="xref std std-term">soft deprecated</span></a> constant representing the size of an internal
preallocated table inside <a class="reference internal" href="#c.PySetObject" title="PySetObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PySetObject</span></code></a> instances.</p>
<p>This is documented solely for completeness, as there are no guarantees
that a given version of CPython uses preallocated tables with a fixed
size.
In code that does not deal with unstable set internals,
<code class="xref c c-macro docutils literal notranslate"><span class="pre">PySet_MINSIZE</span></code> can be replaced with a small constant like <code class="docutils literal notranslate"><span class="pre">8</span></code>.</p>
<p>If looking for the size of a set, use <a class="reference internal" href="#c.PySet_Size" title="PySet_Size"><code class="xref c c-func docutils literal notranslate"><span class="pre">PySet_Size()</span></code></a> instead.</p>
</dd></dl>
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