{"id":24829,"date":"2021-11-02T09:54:23","date_gmt":"2021-11-02T04:24:23","guid":{"rendered":"https:\/\/python-programs.com\/?p=24829"},"modified":"2021-11-05T20:37:44","modified_gmt":"2021-11-05T15:07:44","slug":"python-len-function-with-examples","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-len-function-with-examples\/","title":{"rendered":"Python len() Function with Examples"},"content":{"rendered":"<p>In the previous article, we have discussed <a href=\"https:\/\/python-programs.com\/python-locals-function-with-examples\/\">Python locals() Function with Examples<\/a><br \/>\n<strong>len() Function in Python:<\/strong><\/p>\n<p>The number of items in an object is returned by the len() function.<\/p>\n<p>The len() function returns the number of characters in a string when the object is a string.<\/p>\n<p><strong>Syntax:<\/strong><\/p>\n<pre>len(object)<\/pre>\n<p><strong>Parameters<\/strong><\/p>\n<p><strong>object:<\/strong> This is Required. It is an object. It should be a sequence or a collection.<\/p>\n<p><strong>Return Value:<\/strong><\/p>\n<p>The number of items in an object is returned by the len() function.<\/p>\n<p>A TypeError exception will be thrown if an argument is not passed or if an invalid argument is passed.<\/p>\n<p><strong>Examples:<\/strong><\/p>\n<p><strong>Example1:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given List = [1, 20, 3, 40, 5]<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The length of the given list =  5<\/pre>\n<p><strong>Example2:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given String = \"hello btechgeeks\"<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The length of the given string =  16<\/pre>\n<h2>len() Function with Examples in Python<\/h2>\n<ul>\n<li><a href=\"#Using_Built-in_Functions_(Static_Input)\">Using Built-in Functions (Static Input)<\/a><\/li>\n<li><a href=\"#Using_Built-in_Functions_(User_Input)\">Using Built-in Functions (User Input)<\/a><\/li>\n<\/ul>\n<h3 id=\"Using_Built-in_Functions_(Static_Input)\">Method #1: Using Built-in Functions (Static Input)<\/h3>\n<h5>1)For Lists<\/h5>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the list as static input and store it in a variable.<\/li>\n<li>Pass the given list as an argument to the len() function to get the length of the given list.<\/li>\n<li>Store it in another variable.<\/li>\n<li>Print the length of the given list.<\/li>\n<li>The Exit of the program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Give the list as static input and store it in a variable.\r\ngvn_lst = [1, 20, 3, 40, 5]\r\n# Pass the given list as an argument to the len() function to get the length\r\n# of the given list.\r\n# Store it in another variable.\r\nlst_lengt = len(gvn_lst)\r\n# Print the length of the given list.\r\nprint(\"The length of the given list = \", lst_lengt)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The length of the given list =  5<\/pre>\n<h5>2)For Strings<\/h5>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the string as static input and store it in a variable.<\/li>\n<li>Pass the given string as an argument to the len() function to get the length of the given string.<\/li>\n<li>Store it in another variable.<\/li>\n<li>Print the length of the given string.<\/li>\n<li>The Exit of the program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Give the string as static input and store it in a variable.\r\ngvn_str = \"hello btechgeeks\"\r\n# Pass the given string as an argument to the len() function to get the length\r\n# of the given string.\r\n# Store it in another variable.\r\nstr_lengt = len(gvn_str)\r\n# Print the length of the given string.\r\nprint(\"The length of the given string = \", str_lengt)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The length of the given string =  16<\/pre>\n<h5>How does len() work with dictionaries and sets?<\/h5>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># set doesn't allows duplicates\r\ngvn_set = {10, 20, 40, 50, 10}\r\nprint(\"The length of the given set\", gvn_set, \"=\", len(gvn_set))\r\n\r\ngvn_set2 = set()\r\nprint(\"The length of the given set\", gvn_set2, \"=\", len(gvn_set2))\r\n\r\ngvn_dictnry = {100: 'hello', 200: 'btechgeeks'}\r\nprint(\"The length of the given dictionary\", gvn_dictnry, \"=\", len(gvn_dictnry))\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The length of the given set {40, 10, 20, 50} = 4\r\nThe length of the given set set() = 0\r\nThe length of the given dictionary {100: 'hello', 200: 'btechgeeks'} = 2<\/pre>\n<h3 id=\"Using_Built-in_Functions_(User_Input)\">Method #2: Using Built-in Functions (User Input)<\/h3>\n<h5>1)For Lists<\/h5>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the list as user input using list(),map(),input(),and split() functions.<\/li>\n<li>Store it in a variable.<\/li>\n<li>Pass the given list as an argument to the len() function to get the length of the given list.<\/li>\n<li>Store it in another variable.<\/li>\n<li>Print the length of the given list.<\/li>\n<li>The Exit of the program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Give the list as user input using list(),map(),input(),and split() functions.\r\n# Store it in a variable.\r\ngvn_lst = list(map(int, input(\r\n   'Enter some random List Elements separated by spaces = ').split()))\r\n# Pass the given list as an argument to the len() function to get the length\r\n# of the given list.\r\n# Store it in another variable.\r\nlst_lengt = len(gvn_lst)\r\n# Print the length of the given list.\r\nprint(\"The length of the given list = \", lst_lengt)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter some random List Elements separated by spaces = -1 -2 7 8 9 0 3\r\nThe length of the given list = 7<\/pre>\n<h5>2)For Strings<\/h5>\n<p><strong>Approach:<\/strong><\/p>\n<ul>\n<li>Give the string as user input using the input() function and store it in a variable.<\/li>\n<li>Pass the given string as an argument to the len() function to get the length of the given string.<\/li>\n<li>Store it in another variable.<\/li>\n<li>Print the length of the given string.<\/li>\n<li>The Exit of the program.<\/li>\n<\/ul>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># Give the string as user input using the input() function and store it in a variable.\r\ngvn_str = input(\"Enter some random string = \")\r\n# Pass the given string as an argument to the len() function to get the length\r\n# of the given string.\r\n# Store it in another variable.\r\nstr_lengt = len(gvn_str)\r\n# Print the length of the given string.\r\nprint(\"The length of the given string = \", str_lengt)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter some random string = good morning btechgeeks\r\nThe length of the given string = 23<\/pre>\n<p>Fed up with searching various pages for the list of <a href=\"https:\/\/python-programs.com\/python-built-in-functions\/#Python_Built_in_Functions\">Python Built in Functions<\/a>? Look at the tutorial linked here and explore all coding samples of built-in functions of python.<\/p>\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/python-list-function-with-examples\/\">Python list() Function with Examples<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-sum-function-with-examples\/\">Python sum() Function with Examples<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-tuple-function-with-examples\/\">Python tuple() Function with Examples<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-type-function-with-examples\/\">Python type() Function with Examples<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In the previous article, we have discussed Python locals() Function with Examples len() Function in Python: The number of items in an object is returned by the len() function. The len() function returns the number of characters in a string when the object is a string. Syntax: len(object) Parameters object: This is Required. It is &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-len-function-with-examples\/\"> <span class=\"screen-reader-text\">Python len() Function with Examples<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python len() Function with Examples - Python Programs<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/python-programs.com\/python-len-function-with-examples\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python len() Function with Examples - Python Programs\" \/>\n<meta property=\"og:description\" content=\"In the previous article, we have discussed Python locals() Function with Examples len() Function in Python: The number of items in an object is returned by the len() function. 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