{"id":16495,"date":"2021-08-12T09:33:18","date_gmt":"2021-08-12T04:03:18","guid":{"rendered":"https:\/\/python-programs.com\/?p=16495"},"modified":"2021-11-22T18:38:30","modified_gmt":"2021-11-22T13:08:30","slug":"python-program-to-check-if-all-characters-of-string-are-alphanumeric-or-not","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-program-to-check-if-all-characters-of-string-are-alphanumeric-or-not\/","title":{"rendered":"Python Program to Check if all Characters of String are Alphanumeric or Not"},"content":{"rendered":"<p>In the previous article, we have discussed <a href=\"https:\/\/python-programs.com\/python-program-to-calculate-emi\/\">Python Program to Calculate EMI<\/a><\/p>\n<h4>isalnum() Method:<\/h4>\n<p>The isalnum() Method is a String Class pre-defined method that can be used on any String Object. It returns Boolean Values based on the following criteria.<\/p>\n<ul>\n<li>If all of the characters in the given string are Alphanumerical, it returns True.<\/li>\n<li>If any of the characters in the given string are not Alphanumerical, this function returns False.<\/li>\n<\/ul>\n<p><strong>For Example:<\/strong><\/p>\n<p>Given string = &#8220;Hellobtechgeeks123&#8221;<\/p>\n<p>Output: returns true since all the characters are alphabets and numbers.<\/p>\n<p>Given string = &#8220;good morning@ #btechgeeks12345&#8221;<\/p>\n<p>Output: returns False since all the given String contains some special symbols like #,@, and spaces.<\/p>\n<p><strong>Examples:<\/strong><\/p>\n<p><strong>Example1:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given string = \"Hellobtechgeeks123\"<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The Given string { Hellobtechgeeks123 } is Alpha Numeric<\/pre>\n<p><strong>Example 2:<\/strong><\/p>\n<p><strong>Input:<\/strong><\/p>\n<pre>Given string = \"good morning@ #btechgeeks12345\"<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The Given string { good morning@ #btechgeeks12345 } is not Alpha Numeric<\/pre>\n<h2>Program to Check if all Characters of String are Alphanumeric or Not<\/h2>\n<p>Below are the ways to Check if all Characters of String are Alphanumeric or Not.<\/p>\n<ul>\n<li><a href=\"#Using_isalnum()_Method_(Static_input)\">Using isalnum() Method (Static input)<\/a><\/li>\n<li><a href=\"#Using_isalnum()_Method_(User_input)\">Using isalnum() Method (User input)<\/a><\/li>\n<\/ul>\n<h3 id=\"Using_isalnum()_Method_(Static_input)\">Method #1: Using isalnum() Method (Static input)<\/h3>\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>Check whether the Given string is alphanumeric using the built-in alnum() method and store it in another variable.<\/li>\n<li>Check whether the above result is True or not using the if conditional statement.<\/li>\n<li>If it is True, Print the given string is alphanumeric.<\/li>\n<li>If it is False, Print the given string that is not alphanumeric.<\/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_strng = \"Hellobtechgeeks123\"\r\n# Check whether the Given string is alphanumeric using built-in alnum() method\r\n# and store it in another variable.\r\nBol_val = gvn_strng.isalnum()\r\n# Check whether the above result is True or not using the if conditional statement.\r\nif(Bol_val == True):\r\n # If it is True, Print the given string is\u00a0 alphanumeric.\r\n    print(\"The Given string {\", gvn_strng, \"} is Alpha Numeric\")\r\nelse:\r\n  # If it is False, Print the given string is not alphanumeric.\r\n    print(\"The Given string {\", gvn_strng, \"} is not Alpha Numeric\")\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">The Given string { Hellobtechgeeks123 } is Alpha Numeric<\/pre>\n<h3 id=\"Using_isalnum()_Method_(User_input)\">Method #2: Using isalnum() Method (User input)<\/h3>\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>Check whether the Given string is alphanumeric using the built-in alnum() method and store it in another variable.<\/li>\n<li>Check whether the above result is True or not using the if conditional statement.<\/li>\n<li>If it is True, Print the given string is alphanumeric.<\/li>\n<li>If it is False, Print the given string that is not alphanumeric.<\/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_strng = input('Enter some random string = ')\r\n# Check whether the Given string is alphanumeric using built-in alnum() method\r\n# and store it in another variable.\r\nBol_val = gvn_strng.isalnum()\r\n# Check whether the above result is True or not using the if conditional statement.\r\nif(Bol_val == True):\r\n # If it is True, Print the given string is\u00a0 alphanumeric.\r\n    print(\"The Given string {\", gvn_strng, \"} is Alpha Numeric\")\r\nelse:\r\n  # If it is False, Print the given string is not alphanumeric.\r\n    print(\"The Given string {\", gvn_strng, \"} is not Alpha Numeric\")\r\n\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre>Enter some random string = good morning @btechgeeks #123456\r\nThe Given string { good morning @btechgeeks #123456 } is not Alpha Numeric<\/pre>\n<p>Explore more instances related to python concepts from\u00a0<a href=\"https:\/\/python-programs.com\/python-programming-examples-with-output\/\">Python Programming Examples<\/a>\u00a0Guide and get promoted from beginner to professional programmer level in Python Programming Language.<\/p>\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/python-program-for-comma-separated-string-to-tuple\/\">Python Program for Comma-separated String to Tuple<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-get-the-last-word-from-a-string\/\">Python Program to get the Last Word from a String<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-remove-the-first-occurrence-of-character-in-a-string\/\">Python Program to Remove the First Occurrence of Character in a String<\/a><\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-print-even-length-words-in-a-string\/\">Program to Print Even Length Words in a String<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In the previous article, we have discussed Python Program to Calculate EMI isalnum() Method: The isalnum() Method is a String Class pre-defined method that can be used on any String Object. It returns Boolean Values based on the following criteria. If all of the characters in the given string are Alphanumerical, it returns True. If &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-program-to-check-if-all-characters-of-string-are-alphanumeric-or-not\/\"> <span class=\"screen-reader-text\">Python Program to Check if all Characters of String are Alphanumeric or Not<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":7,"featured_media":16791,"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 Program to Check if all Characters of String are Alphanumeric or Not - 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-program-to-check-if-all-characters-of-string-are-alphanumeric-or-not\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python Program to Check if all Characters of String are Alphanumeric or Not - Python Programs\" \/>\n<meta property=\"og:description\" content=\"In the previous article, we have discussed Python Program to Calculate EMI isalnum() Method: The isalnum() Method is a String Class pre-defined method that can be used on any String Object. 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It returns Boolean Values based on the following criteria. If all of the characters in the given string are Alphanumerical, it returns True. 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