{"id":25530355,"date":"2022-06-26T17:32:45","date_gmt":"2022-06-26T12:02:45","guid":{"rendered":"https:\/\/entri.app\/blog\/?p=25530355"},"modified":"2023-05-18T15:50:34","modified_gmt":"2023-05-18T10:20:34","slug":"what-isinstance-in-python-and-how-to-implement-it","status":"publish","type":"post","link":"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/","title":{"rendered":"What Isinstance In Python And How To Implement It?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69efaf7c83721\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69efaf7c83721\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/#isinstance_Parameters\" >isinstance() Parameters:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/#isinstance_Return_Value\" >isinstance() Return Value<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/#Examples_of_isinstance_method_in_Python\" >Examples of isinstance() method in Python<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/#Python_isinstance_method\" >Python isinstance() method<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/#Python_isinstance_Example\" >Python isinstance() Example<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/entri.app\/blog\/what-isinstance-in-python-and-how-to-implement-it\/#How_to_check_if_an_object_is_an_instance_in_Python\" >How to check if an object is an instance in Python?<\/a><\/li><\/ul><\/nav><\/div>\n<p>The isinstance() function returns true if the first argument of the function is an instance or subclass of the second argument. Actually, we can say that this function is used to check if the given object is an instance or subclass of the given class.<\/p>\n<div class=\"syntax\">\n<pre><code class=\"python hljs language-python\">\r\n<span class=\"hljs-built_in\">isinstance<\/span>(<span class=\"hljs-built_in\">object<\/span>, classinfo)  <span class=\"hljs-comment\"># Where object specify name of the object<\/span><\/code><\/pre>\n<\/div>\n<p style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-25522670 size-full\" src=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Rectangle-1.png\" alt=\"Python and Machine Learning Rectangle\" width=\"970\" height=\"250\" srcset=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Rectangle-1.png 970w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Rectangle-1-300x77.png 300w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Rectangle-1-768x198.png 768w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Rectangle-1-750x193.png 750w\" sizes=\"auto, (max-width: 970px) 100vw, 970px\" \/><\/a><strong><a class=\"in-cell-link\" href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\">&#8220;Ready to take your python skills to the next level? Sign up for a free demo today!&#8221;<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"isinstance_Parameters\"><\/span><strong>isinstance() Parameters:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Takes 2\u00a0parameters where a first parameter is an object of string, int, float, long, or custom type.<\/p>\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Parameter<\/th>\n<th scope=\"col\">Description<\/th>\n<th scope=\"col\">Required \/ Optional<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>object<\/td>\n<td>An object to be checked.<\/td>\n<td>Required<\/td>\n<\/tr>\n<tr>\n<td>classinfo<\/td>\n<td>The class name or a tuple of class names.<\/td>\n<td>Required<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"lead-gen-block\"><a href=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/03\/Python_PDF.pdf\" data-url=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/03\/Python_PDF.pdf\" class=\"lead-pdf-download\" data-id=\"&lt;strong&gt;25556851&lt;\/strong&gt;\">\n<p style=\"text-align: center;\"><strong>Download Python Programming Course Syllabus! <\/a><\/div><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"isinstance_Return_Value\"><\/span><strong>isinstance() Return Value<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>It returns a boolean value either true or false.<\/p>\n<table>\n<tbody>\n<tr>\n<th>Input<\/th>\n<th>Return Value<\/th>\n<\/tr>\n<tr>\n<td>\u00a0an object is an instance<\/td>\n<td>true<\/td>\n<\/tr>\n<tr>\n<td>\u00a0an object is not an instance<\/td>\n<td>false<\/td>\n<\/tr>\n<tr>\n<td>classinfo is not a type or tuple of types<\/td>\n<td>TypeError exception<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4 style=\"text-align: center;\"><strong><a href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\">Grab the opportunity to learn Python with Entri! Click Here<\/a><\/strong><\/h4>\n<h2><span class=\"ez-toc-section\" id=\"Examples_of_isinstance_method_in_Python\"><\/span><strong>Examples of isinstance() method in Python<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"code-example\">\n<h3><strong>Example 1: How isinstance() works?<\/strong><\/h3>\n<pre><code class=\"python hljs language-python\">\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Foo<\/span>:\r\n  a = <span class=\"hljs-number\">5<\/span>\r\n  \r\nfooInstance = Foo()\r\n\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">isinstance<\/span>(fooInstance, Foo))\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">isinstance<\/span>(fooInstance, (<span class=\"hljs-built_in\">list<\/span>, <span class=\"hljs-built_in\">tuple<\/span>)))\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">isinstance<\/span>(fooInstance, (<span class=\"hljs-built_in\">list<\/span>, <span class=\"hljs-built_in\">tuple<\/span>, Foo)))\r\n <\/code><\/pre>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<div class=\"output\">\n<pre><samp>True\r\nFalse\r\nTrue\r\n<\/samp><\/pre>\n<\/div>\n<div class=\"code-example\">\n<p><strong><div class=\"lead-gen-block\"><a href=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2023\/05\/1_merged-3_compressed.pdf\" data-url=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2023\/05\/1_merged-3_compressed.pdf\" class=\"lead-pdf-download\" data-id=\"25556851\"><\/strong><\/p>\n<p style=\"text-align: center;\"><button class=\"btn btn-default\">Free SQL Tutorial for Beginners &#8211; Download PDF<\/button><\/p>\n<p><strong><\/a><\/div><\/strong><\/p>\n<h3><strong>Example 2: Working of isinstance() with Native Types<\/strong><\/h3>\n<pre><code class=\"python hljs language-python\">\r\nnumbers = [<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>]\r\n\r\nresult = <span class=\"hljs-built_in\">isinstance<\/span>(numbers, <span class=\"hljs-built_in\">list<\/span>)\r\n<span class=\"hljs-built_in\">print<\/span>(numbers,<span class=\"hljs-string\">'instance of list?'<\/span>, result)\r\n\r\nresult = <span class=\"hljs-built_in\">isinstance<\/span>(numbers, <span class=\"hljs-built_in\">dict<\/span>)\r\n<span class=\"hljs-built_in\">print<\/span>(numbers,<span class=\"hljs-string\">'instance of dict?'<\/span>, result)\r\n\r\nresult = <span class=\"hljs-built_in\">isinstance<\/span>(numbers, (<span class=\"hljs-built_in\">dict<\/span>, <span class=\"hljs-built_in\">list<\/span>))\r\n<span class=\"hljs-built_in\">print<\/span>(numbers,<span class=\"hljs-string\">'instance of dict or list?'<\/span>, result)\r\n\r\nnumber = <span class=\"hljs-number\">5<\/span>\r\n\r\nresult = <span class=\"hljs-built_in\">isinstance<\/span>(number, <span class=\"hljs-built_in\">list<\/span>)\r\n<span class=\"hljs-built_in\">print<\/span>(number,<span class=\"hljs-string\">'instance of list?'<\/span>, result)\r\n\r\nresult = <span class=\"hljs-built_in\">isinstance<\/span>(number, <span class=\"hljs-built_in\">int<\/span>)\r\n<span class=\"hljs-built_in\">print<\/span>(number,<span class=\"hljs-string\">'instance of int?'<\/span>, result)\r\n <\/code><\/pre>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<div class=\"output\">\n<pre><samp>[1, 2, 3] instance of list? True\r\n[1, 2, 3] instance of dict? False\r\n[1, 2, 3] instance of dict or list? True\r\n5 instance of list? False\r\n5 instance of int? True\r\n<\/samp><\/pre>\n<\/div>\n<div class=\"code-example\">\n<h3><strong>Example 3: working of isinstance() another example?<\/strong><\/h3>\n<pre><code class=\"python hljs language-python\">\r\n<span class=\"hljs-comment\"># Python isinstance() function example  <\/span>\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Student<\/span>:  \r\n    <span class=\"hljs-built_in\">id<\/span> = <span class=\"hljs-number\">101<\/span>  \r\n    name = <span class=\"hljs-string\">\"John\"<\/span>  \r\n    <span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">__init__<\/span>(<span class=\"hljs-params\">self, <span class=\"hljs-built_in\">id<\/span>, name<\/span>):  \r\n        self.<span class=\"hljs-built_in\">id<\/span>=<span class=\"hljs-built_in\">id<\/span>  \r\n        self.name=name  \r\n  \r\nstudent = Student(<span class=\"hljs-number\">1010<\/span>,<span class=\"hljs-string\">\"John\"<\/span>)  \r\nlst = [<span class=\"hljs-number\">12<\/span>,<span class=\"hljs-number\">34<\/span>,<span class=\"hljs-number\">5<\/span>,<span class=\"hljs-number\">6<\/span>,<span class=\"hljs-number\">767<\/span>]  \r\n<span class=\"hljs-comment\"># Calling function   <\/span>\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">isinstance<\/span>(student, Student)) <span class=\"hljs-comment\"># isinstance of Student class  <\/span>\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">isinstance<\/span>(lst, Student))  \r\n <\/code><\/pre>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<div class=\"output\">\n<pre><samp>True\r\nFalse<\/samp><\/pre>\n<div>\n<div class=\"article-title\">\n<h4 style=\"text-align: center;\"><a href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\"><strong>Learn to code from industry experts! Enroll here<\/strong><\/a><\/h4>\n<h2><span class=\"ez-toc-section\" id=\"Python_isinstance_method\"><\/span><strong>Python isinstance() method<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<div class=\"text\">\n<p><strong>Python isinstance() function\u00a0<\/strong>returns True if the object is specified types, and it will not match then return False.<\/p>\n<blockquote><p><strong>Syntax :<\/strong>\u00a0isinstance(obj, class)<\/p>\n<p><strong>Parameters :\u00a0<\/strong><\/p>\n<div id=\"GFG_AD_gfg_mobile_336x280\"><\/div>\n<ul>\n<li><strong>obj :<\/strong>\u00a0The object that need to be checked as a part of class or not.<\/li>\n<li><strong>class :<\/strong>\u00a0class\/type\/tuple of class or type, against which object is needed to be checked.<\/li>\n<\/ul>\n<p><strong>Returns :\u00a0<\/strong>True, if object belongs to the given class\/type if single class is passed or any of the class\/type if tuple of class\/type is passed, else returns False. Raises<\/p>\n<p><strong>TypeError:<\/strong>\u00a0if anything other than mentioned valid class type.<\/p><\/blockquote>\n<h2><span class=\"ez-toc-section\" id=\"Python_isinstance_Example\"><\/span><strong>Python isinstance() Example<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><strong>Example 1:\u00a0Python isinstance with int and list<\/strong><\/h3>\n<div class=\"responsive-tabs-wrapper\">\n<div class=\"responsive-tabs responsive-tabs--enabled\">\n<div id=\"tablist1-panel1\" class=\"tabcontent responsive-tabs__panel responsive-tabs__panel--active\" role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tablist1-tab1\">\n<div class=\"code-block\">\n<div class=\"code-gutter\">\n<div class=\"editor-buttons-container\">\n<div class=\"editor-buttons\"><\/div>\n<\/div>\n<\/div>\n<div class=\"code-container\">\n<div id=\"highlighter_742572\" class=\"syntaxhighlighter nogutter\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"comments\"># Python 3 code to demonstrate<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"comments\"># working of isinstance()<\/code><\/div>\n<div class=\"line number3 index2 alt2\"><code class=\"comments\"># with native types<\/code><\/div>\n<div class=\"line number4 index3 alt1\"><\/div>\n<div class=\"line number5 index4 alt2\"><code class=\"comments\"># initializing native types<\/code><\/div>\n<div class=\"line number6 index5 alt1\"><code class=\"plain\">test_int <\/code><code class=\"keyword\">=<\/code> <code class=\"value\">5<\/code><\/div>\n<div class=\"line number7 index6 alt2\"><code class=\"plain\">test_list <\/code><code class=\"keyword\">=<\/code> <code class=\"plain\">[<\/code><code class=\"value\">1<\/code><code class=\"plain\">, <\/code><code class=\"value\">2<\/code><code class=\"plain\">, <\/code><code class=\"value\">3<\/code><code class=\"plain\">]<\/code><\/div>\n<div class=\"line number8 index7 alt1\"><\/div>\n<div class=\"line number9 index8 alt2\"><code class=\"comments\"># testing with isinstance<\/code><\/div>\n<div class=\"line number10 index9 alt1\"><code class=\"keyword\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is test_int integer? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_int, <\/code><code class=\"functions\">int<\/code><code class=\"plain\">)))<\/code><\/div>\n<div class=\"line number11 index10 alt2\"><code class=\"functions\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is test_int string? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_int, <\/code><code class=\"functions\">str<\/code><code class=\"plain\">)))<\/code><\/div>\n<div class=\"line number12 index11 alt1\"><code class=\"keyword\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is test_list integer? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_list, <\/code><code class=\"functions\">int<\/code><code class=\"plain\">)))<\/code><\/div>\n<div class=\"line number13 index12 alt2\"><code class=\"keyword\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is test_list list? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_list, <\/code><code class=\"functions\">list<\/code><code class=\"plain\">)))<\/code><\/div>\n<div class=\"line number14 index13 alt1\"><\/div>\n<div class=\"line number15 index14 alt2\"><code class=\"comments\"># testing with tuple<\/code><\/div>\n<div class=\"line number16 index15 alt1\"><code class=\"keyword\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is test_int integer or list or string? : \"<\/code><\/div>\n<div class=\"line number17 index16 alt2\"><code class=\"undefined spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_int, (<\/code><code class=\"functions\">list<\/code><code class=\"plain\">, <\/code><code class=\"functions\">int<\/code><code class=\"plain\">))))<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<pre>Is test_int integer? : True\r\nIs test_int string? : False\r\nIs test_list integer? : False\r\nIs test_list list? : True\r\nIs test_int integer or list or string? : True<\/pre>\n<h3><strong>Example 2:\u00a0Demonstrating the use of isinstance() with objects<\/strong><\/h3>\n<div class=\"responsive-tabs-wrapper\">\n<div class=\"responsive-tabs responsive-tabs--enabled\">\n<div id=\"tablist2-panel1\" class=\"tabcontent responsive-tabs__panel responsive-tabs__panel--active\" role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tablist2-tab1\">\n<div class=\"code-block\">\n<div class=\"code-gutter\">\n<div class=\"editor-buttons-container\">\n<div class=\"editor-buttons\"><\/div>\n<\/div>\n<\/div>\n<div class=\"code-container\">\n<div id=\"highlighter_282802\" class=\"syntaxhighlighter nogutter\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"comments\"># Python 3 code to demonstrate<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"comments\"># working of isinstance()<\/code><\/div>\n<div class=\"line number3 index2 alt2\"><code class=\"comments\"># with objects<\/code><\/div>\n<div class=\"line number4 index3 alt1\"><\/div>\n<div class=\"line number5 index4 alt2\"><code class=\"comments\"># declaring classes<\/code><\/div>\n<div class=\"line number6 index5 alt1\"><code class=\"keyword\">class<\/code> <code class=\"plain\">gfg1:<\/code><\/div>\n<div class=\"line number7 index6 alt2\"><code class=\"undefined spaces\">\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"plain\">a <\/code><code class=\"keyword\">=<\/code> <code class=\"value\">10<\/code><\/div>\n<div class=\"line number8 index7 alt1\"><\/div>\n<div class=\"line number9 index8 alt2\"><code class=\"comments\"># inherited class<\/code><\/div>\n<div class=\"line number10 index9 alt1\"><code class=\"keyword\">class<\/code> <code class=\"plain\">gfg2(gfg1):<\/code><\/div>\n<div class=\"line number11 index10 alt2\"><code class=\"undefined spaces\">\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"plain\">string <\/code><code class=\"keyword\">=<\/code> <code class=\"string\">'GeeksforGeeks'<\/code><\/div>\n<div class=\"line number12 index11 alt1\"><\/div>\n<div class=\"line number13 index12 alt2\"><\/div>\n<div class=\"line number14 index13 alt1\"><code class=\"comments\"># initializing objects<\/code><\/div>\n<div class=\"line number15 index14 alt2\"><code class=\"plain\">obj1 <\/code><code class=\"keyword\">=<\/code> <code class=\"plain\">gfg1()<\/code><\/div>\n<div class=\"line number16 index15 alt1\"><code class=\"plain\">obj2 <\/code><code class=\"keyword\">=<\/code> <code class=\"plain\">gfg2()<\/code><\/div>\n<div class=\"line number17 index16 alt2\"><\/div>\n<div class=\"line number18 index17 alt1\"><code class=\"comments\"># checking instances<\/code><\/div>\n<div class=\"line number19 index18 alt2\"><code class=\"functions\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is obj1 instance of gfg1? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(obj1, gfg1)))<\/code><\/div>\n<div class=\"line number20 index19 alt1\"><code class=\"functions\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is obj2 instance of gfg2? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(obj2, gfg2)))<\/code><\/div>\n<div class=\"line number21 index20 alt2\"><code class=\"functions\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is obj1 instance of gfg2? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(obj1, gfg2)))<\/code><\/div>\n<div class=\"line number22 index21 alt1\"><\/div>\n<div class=\"line number23 index22 alt2\"><\/div>\n<div class=\"line number24 index23 alt1\"><code class=\"comments\"># check inheritance case<\/code><\/div>\n<div class=\"line number25 index24 alt2\"><code class=\"comments\"># return true<\/code><\/div>\n<div class=\"line number26 index25 alt1\"><code class=\"keyword\">print<\/code><code class=\"plain\">(<\/code><code class=\"string\">\"Is obj2 instance of gfg1? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(obj2, gfg1)))<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<pre>Is obj1 instance of gfg1? : True\r\nIs obj2 instance of gfg2? : True\r\nIs obj1 instance of gfg2? : False\r\nIs obj2 instance of gfg1? : True<\/pre>\n<h3><strong>Example 3: Python isinstance array<\/strong><\/h3>\n<div class=\"responsive-tabs-wrapper\">\n<div class=\"responsive-tabs responsive-tabs--enabled\">\n<div id=\"tablist3-panel1\" class=\"tabcontent responsive-tabs__panel responsive-tabs__panel--active\" role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tablist3-tab1\">\n<div class=\"code-block\">\n<div class=\"code-gutter\">\n<div class=\"editor-buttons-container\">\n<div class=\"editor-buttons\"><\/div>\n<\/div>\n<\/div>\n<div class=\"code-container\">\n<div id=\"highlighter_114900\" class=\"syntaxhighlighter nogutter\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"plain\">test_list <\/code><code class=\"keyword\">=<\/code> <code class=\"plain\">[<\/code><code class=\"value\">1<\/code><code class=\"plain\">, <\/code><code class=\"value\">2<\/code><code class=\"plain\">, <\/code><code class=\"value\">3<\/code><code class=\"plain\">]<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"functions\">print<\/code> <code class=\"plain\">(<\/code><code class=\"string\">\"Is test_list list? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_list, <\/code><code class=\"functions\">list<\/code><code class=\"plain\">)))<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<pre>Is test_list list? : True<\/pre>\n<h4 style=\"text-align: center;\"><strong><a href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\">Learn Coding in your Language! Enroll Here!<\/a><\/strong><\/h4>\n<h3><strong>Example 4: Python isinstance string<\/strong><\/h3>\n<div class=\"responsive-tabs-wrapper\">\n<div class=\"responsive-tabs responsive-tabs--enabled\">\n<div id=\"tablist4-panel1\" class=\"tabcontent responsive-tabs__panel responsive-tabs__panel--active\" role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tablist4-tab1\">\n<div class=\"code-block\">\n<div class=\"code-gutter\">\n<div class=\"editor-buttons-container\">\n<div class=\"editor-buttons\"><\/div>\n<\/div>\n<\/div>\n<div class=\"code-container\">\n<div id=\"highlighter_237460\" class=\"syntaxhighlighter nogutter\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"plain\">test_str <\/code><code class=\"keyword\">=<\/code> <code class=\"string\">\"GeeksforGeeks\"<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"functions\">print<\/code> <code class=\"plain\">(<\/code><code class=\"string\">\"Is test_str string? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_str, <\/code><code class=\"functions\">str<\/code><code class=\"plain\">)))<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<pre>Is test_str string? : True<\/pre>\n<h3><strong>Example 4: Python isinstance dict<\/strong><\/h3>\n<div class=\"responsive-tabs-wrapper\">\n<div class=\"responsive-tabs responsive-tabs--enabled\">\n<div id=\"tablist5-panel1\" class=\"tabcontent responsive-tabs__panel responsive-tabs__panel--active\" role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tablist5-tab1\">\n<div class=\"code-block\">\n<div class=\"code-gutter\">\n<div class=\"editor-buttons-container\">\n<div class=\"editor-buttons\">\n<div class=\"editor-buttons-div\" title=\"Run and Edit\">\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"code-container\">\n<div id=\"highlighter_653734\" class=\"syntaxhighlighter nogutter\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"plain\">test_dict <\/code><code class=\"keyword\">=<\/code> <code class=\"plain\">{<\/code><code class=\"string\">\"apple\"<\/code> <code class=\"plain\">: <\/code><code class=\"value\">1<\/code><code class=\"plain\">, <\/code><code class=\"string\">\"Ball\"<\/code> <code class=\"plain\">: <\/code><code class=\"value\">2<\/code> <code class=\"plain\">}<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"functions\">print<\/code> <code class=\"plain\">(<\/code><code class=\"string\">\"Is test_str dictionary? : \"<\/code> <code class=\"keyword\">+<\/code> <code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(test_dict, <\/code><code class=\"functions\">dict<\/code><code class=\"plain\">)))<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<pre>Is test_str dictionary? : True<\/pre>\n<h3><strong>Example 5: Python isinstace class methods<\/strong><\/h3>\n<div class=\"responsive-tabs-wrapper\">\n<div class=\"responsive-tabs responsive-tabs--enabled\">\n<div id=\"tablist6-panel1\" class=\"tabcontent responsive-tabs__panel responsive-tabs__panel--active\" role=\"tabpanel\" aria-hidden=\"false\" aria-labelledby=\"tablist6-tab1\">\n<div class=\"code-block\">\n<div class=\"code-gutter\">\n<div class=\"editor-buttons-container\">\n<div class=\"editor-buttons\"><\/div>\n<\/div>\n<\/div>\n<div class=\"code-container\">\n<div id=\"highlighter_758637\" class=\"syntaxhighlighter nogutter\">\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td class=\"code\">\n<div class=\"container\">\n<div class=\"line number1 index0 alt2\"><code class=\"keyword\">class<\/code> <code class=\"plain\">geeks:<\/code><\/div>\n<div class=\"line number2 index1 alt1\"><code class=\"undefined spaces\">\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"plain\">course <\/code><code class=\"keyword\">=<\/code> <code class=\"string\">'DSA'<\/code><\/div>\n<div class=\"line number3 index2 alt2\"><code class=\"undefined spaces\">\u00a0\u00a0<\/code><\/div>\n<div class=\"line number4 index3 alt1\"><code class=\"undefined spaces\">\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"keyword\">def<\/code> <code class=\"plain\">purchase(obj):<\/code><\/div>\n<div class=\"line number5 index4 alt2\"><code class=\"undefined spaces\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/code><code class=\"keyword\">return<\/code> <code class=\"plain\">obj.course<\/code><\/div>\n<div class=\"line number6 index5 alt1\"><code class=\"undefined spaces\">\u00a0\u00a0<\/code><\/div>\n<div class=\"line number7 index6 alt2\"><code class=\"undefined spaces\">\u00a0\u00a0<\/code><\/div>\n<div class=\"line number8 index7 alt1\"><code class=\"plain\">geeks.purchase <\/code><code class=\"keyword\">=<\/code> <code class=\"functions\">classmethod<\/code><code class=\"plain\">(geeks.purchase)<\/code><\/div>\n<div class=\"line number9 index8 alt2\"><code class=\"functions\">str<\/code><code class=\"plain\">(<\/code><code class=\"functions\">isinstance<\/code><code class=\"plain\">(geeks.purchase(), <\/code><code class=\"functions\">str<\/code> <code class=\"plain\">))<\/code><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Output:<\/strong><\/p>\n<pre>True<\/pre>\n<div class=\"b_module_expansion\">\n<div class=\"b_expansion_wrapper b_collapse b_onpage_expansion\" role=\"button\">\n<h2 class=\"b_expansion_text b_1linetrunc\" aria-label=\"How to check if an object is an instance in Python?\"><span class=\"ez-toc-section\" id=\"How_to_check_if_an_object_is_an_instance_in_Python\"><\/span><strong>How to check if an object is an instance in Python?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<div id=\"wire3\" class=\"b_expandable_inline_container\" data-rinterval=\"-1\" data-errormessage=\"We can't find any more info about this page right now\">\n<div class=\"df_alsocon b_primtxt\" data-tag=\"RelatedQnA.ItemDetails\">\n<div class=\"rwrl rwrl_small rwrl_padref\">The Python isinstance () method also provides a measure if we want to check whether an object is an instance of any class among some given classes. In that case, we need to pass a tuple of the required classes. The method will return true if the object is an instance of any class, or else returns false.<\/div>\n<div>\n<p><a href=\"https:\/\/entri.app\/course\/python-programming-course\/\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-25520910 size-full\" src=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square.png\" alt=\"Python and Machine Learning Square\" width=\"345\" height=\"345\" srcset=\"https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square.png 345w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square-300x300.png 300w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square-150x150.png 150w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square-24x24.png 24w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square-48x48.png 48w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square-96x96.png 96w, https:\/\/entri.app\/blog\/wp-content\/uploads\/2022\/04\/Python-and-Machine-Learning-Square-75x75.png 75w\" sizes=\"auto, (max-width: 345px) 100vw, 345px\" \/><\/a><\/p>\n<h4><strong>Related Articles<\/strong><\/h4>\n<div class=\"table-responsive wprt_style_display\">\n<table class=\"table\" dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<colgroup>\n<col width=\"329\" \/>\n<col width=\"309\" \/><\/colgroup>\n<tbody>\n<tr>\n<td data-sheets-value=\"{&quot;1&quot;:2,&quot;2&quot;:&quot;Kerala PSC VFA Syllabus&quot;}\" data-sheets-hyperlink=\"https:\/\/entri.app\/blog\/kerala-psc-village-field-assistant-vfa-syllabus-exam-pattern\/\"><strong><a class=\"in-cell-link\" href=\"https:\/\/entri.app\/blog\/how-to-learn-python-at-home\/\" target=\"_blank\" 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Developer<\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"modal\" id=\"modal25556851\"><div class=\"modal-content\"><span class=\"close-button\">&times;<\/span>\n\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f25556851-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"25556851\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/blog\/wp-json\/wp\/v2\/posts\/25530355#wpcf7-f25556851-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"25556851\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.4\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f25556851-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/><input type=\"hidden\" name=\"_wpcf7cf_hidden_group_fields\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_hidden_groups\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_visible_groups\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_repeaters\" value=\"[]\" \/><input type=\"hidden\" name=\"_wpcf7cf_steps\" value=\"{}\" \/><input type=\"hidden\" name=\"_wpcf7cf_options\" value=\"{&quot;form_id&quot;:25556851,&quot;conditions&quot;:[],&quot;settings&quot;:{&quot;animation&quot;:&quot;yes&quot;,&quot;animation_intime&quot;:200,&quot;animation_outtime&quot;:200,&quot;conditions_ui&quot;:&quot;normal&quot;,&quot;notice_dismissed&quot;:false,&quot;notice_dismissed_update-cf7-5.9.8&quot;:true,&quot;notice_dismissed_update-cf7-6.1.1&quot;:true}}\" \/>\n<\/fieldset>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"full_name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Name\" value=\"\" type=\"text\" name=\"full_name\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"phone\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-tel wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-tel\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Phone\" value=\"\" type=\"tel\" name=\"phone\" \/><\/span><br \/>\n<span class=\"wpcf7-form-control-wrap\" data-name=\"email_id\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-text wpcf7-validates-as-email\" aria-invalid=\"false\" placeholder=\"Email\" value=\"\" type=\"email\" name=\"email_id\" \/><\/span>\n<\/p>\n<div class=\"custom-form-group-1\">\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"language\"><select class=\"wpcf7-form-control wpcf7-select wpcf7-validates-as-required language-select1\" aria-required=\"true\" aria-invalid=\"false\" name=\"language\"><option value=\"\">Select Language<\/option><option value=\"Malayalam\">Malayalam<\/option><option value=\"Tamil\">Tamil<\/option><option value=\"Telugu\">Telugu<\/option><option value=\"Kannada\">Kannada<\/option><\/select><\/span>\n\t<\/p>\n<\/div>\n<div class=\"custom-form-group-1\">\n\t<p><span class=\"wpcf7-form-control-wrap\" data-name=\"course\"><select class=\"wpcf7-form-control wpcf7-select wpcf7-validates-as-required course-select1\" aria-required=\"true\" aria-invalid=\"false\" name=\"course\"><option value=\"\">Select an option<\/option><option value=\"Kerala PSC Exams\">Kerala PSC Exams<\/option><option value=\"Kerala PSC Teaching Exams\">Kerala PSC Teaching Exams<\/option><option value=\"Kerala PSC Technical Exams\">Kerala PSC Technical Exams<\/option><option value=\"SSC\/RRB\">SSC\/RRB<\/option><option value=\"GATE\">GATE<\/option><option value=\"Banking &amp; Insurance\">Banking &amp; Insurance<\/option><option value=\"Coding\">Coding<\/option><option value=\"Commerce\">Commerce<\/option><option value=\"Personal Finance\">Personal Finance<\/option><option value=\"Spoken English\/Personality Dev\">Spoken English\/Personality Dev<\/option><option value=\"German Language\">German Language<\/option><option value=\"Montessori Teacher Training\">Montessori Teacher Training<\/option><option value=\"IELTS\">IELTS<\/option><option value=\"MEP\">MEP<\/option><option value=\"Quantity Surveying\">Quantity Surveying<\/option><option value=\"Structural Design\">Structural Design<\/option><option value=\"Yoga TTC\">Yoga TTC<\/option><option value=\"Digital Marketing\">Digital Marketing<\/option><option value=\"Hospital and Healthcare Administration\">Hospital and Healthcare Administration<\/option><option value=\"BIM\">BIM<\/option><option value=\"HR Management\">HR Management<\/option><option value=\"Embedded System Software Engineering\">Embedded System Software 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