{"id":3752,"date":"2023-10-24T16:21:01","date_gmt":"2023-10-24T10:51:01","guid":{"rendered":"https:\/\/python-programs.com\/?p=3752"},"modified":"2023-11-10T11:57:13","modified_gmt":"2023-11-10T06:27:13","slug":"python-how-to-insert-an-element-at-specific-index-in-list","status":"publish","type":"post","link":"https:\/\/python-programs.com\/python-how-to-insert-an-element-at-specific-index-in-list\/","title":{"rendered":"Python : How to Insert an element at specific index in List ?"},"content":{"rendered":"<p>Lists are similar to dynamically sized arrays, which are declared in other languages(e.g., vector in C++ and ArrayList in Java). Lists do not have to be homogeneous all of the time, which makes it a very useful tool in Python. DataTypes such as Integers, Strings, and Objects can all be included in a single list. Lists are mutable, which means they can be changed after they&#8217;ve been created.<\/p>\n<p>An index refers to a position within an list.<\/p>\n<p>Given, a list the task is to insert an element at specific index in given list.<\/p>\n<h2>Insert an element at Specific Index in List<\/h2>\n<ul>\n<li><a href=\"#Insert()_function\">Insert() function<\/a><\/li>\n<li><a href=\"#Inserting_an_element_at_a_specific_position\">Inserting an element at a specific position<\/a><\/li>\n<li><a href=\"#Inserting_element_at_the_first_position_of_the_list\">Inserting element at the first position of the list<\/a><\/li>\n<li><a href=\"#Inserting_element_at_the_end_position_of_the_list\">Inserting element at the end position of the list<\/a><\/li>\n<li><a href=\"#Insert_all_elements_of_second_list_at_specific_index_in_given_list\">Insert all elements of second list at specific index in given list<\/a><\/li>\n<\/ul>\n<h3 id=\"Insert()_function\">1)Insert() function<\/h3>\n<p><strong>Syntax:<\/strong><\/p>\n<pre>givenlist.insert(index, element)<\/pre>\n<p><strong>Parameters:<\/strong><\/p>\n<pre>index - the position in the array at which the element must be inserted.\r\nelement - the element that will be added to the list.<\/pre>\n<p><strong>Return:<\/strong><\/p>\n<pre>This method does not return a value, but instead inserts the specified element at the specified index.<\/pre>\n<h3 id=\"Inserting_an_element_at_a_specific_position\">2)Inserting an element at a specific position<\/h3>\n<p>Suppose we want to insert &#8216;python&#8217; in a givenlist at index 3 we can pass arguments like<\/p>\n<p><strong>insert(3,value)<\/strong> where value=<strong>&#8216;python&#8217;<\/strong><\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># given list\r\ngivenlist = ['hello', 'this', 'is', 'BTechGeeks']\r\n# given value\r\nvalue = 'python'\r\n# given index\r\nindex = 3\r\n# inserting the given value at given index\r\ngivenlist.insert(index, value)\r\n# print the list\r\nprint(givenlist)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">['hello', 'this', 'is', 'python', 'BTechGeeks']<\/pre>\n<h3 id=\"Inserting_element_at_the_first_position_of_the_list\">3)Inserting element at the first position of the list<\/h3>\n<p>We know that the starting index of list is 0 so we give 0 as index while inserting the given value.<\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># given list\r\ngivenlist = ['hello', 'this', 'is', 'BTechGeeks']\r\n# given value\r\nvalue = 'python'\r\n# inserting the given value at starting position\r\ngivenlist.insert(0, value)\r\n# print the list\r\nprint(givenlist)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">['python', 'hello', 'this', 'is', 'BTechGeeks']<\/pre>\n<h3 id=\"Inserting_element_at_the_end_position_of_the_list\">4)Inserting element at the end position of the list<\/h3>\n<p>We know that the last index of the list is len(list)-1 to insert element at end we use len(list) as parameter.<\/p>\n<p>Passing this index to insert function inserts the element at the end of the list.<\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># given list\r\ngivenlist = ['hello', 'this', 'is', 'BTechGeeks']\r\n# given value\r\nvalue = 'python'\r\n# inserting the given value at end position\r\ngivenlist.insert(len(givenlist), value)\r\n# print the list\r\nprint(givenlist)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">['hello', 'this', 'is', 'BTechGeeks', 'python']<\/pre>\n<h3 id=\"Insert_all_elements_of_second_list_at_specific_index_in_given_list\">5)Insert all elements of second list at specific index in given list<\/h3>\n<p>By slicing we can insert it easily .<\/p>\n<p>Splice given list from 0 to index-1 and merge all of list2&#8217;s elements into it. Then, from index to the end of the list, merge all of the remaining elements.<\/p>\n<p><strong>Below is the implementation:<\/strong><\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\"># given list\r\ngivenlist = ['hello', 'this', 'is', 'BTechGeeks']\r\n# given value\r\ngivenlist2 = ['welcome', 'to', 'python']\r\n# given index\r\nindex = 2\r\n# inserting the given value using slicing\r\ngivenlist = givenlist[:index]+givenlist2+givenlist[index:]\r\n# print the list\r\nprint(givenlist)\r\n<\/pre>\n<p><strong>Output:<\/strong><\/p>\n<pre id=\"codeOutputPre\">['hello', 'this', 'welcome', 'to', 'python', 'is', 'BTechGeeks']<\/pre>\n<p><strong>Related Programs<\/strong>:<\/p>\n<ul>\n<li><a href=\"https:\/\/python-programs.com\/python-how-to-add-an-element-in-list-append-vs-extend\/\">python how to add an element in list append vs extend<\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-find-the-minimum-index-of-a-repeating-element-in-an-array-list\/\">python program to find the minimum index of a repeating element in an array list<\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-how-to-find-all-indexes-of-an-item-in-a-list\/\">python how to find all indexes of an item in a list<\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-how-to-check-if-an-item-exists-in-list\/\">python how to check if an item exists in list<\/li>\n<li><a href=\"https:\/\/python-programs.com\/cpp-how-to-get-element-by-index-in-list\/\">cpp how to get element by index in list<\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-how-to-find-an-element-in-tuple-by-value\/\">python how to find an element in tuple by value<\/li>\n<li><a href=\"https:\/\/python-programs.com\/python-program-to-find-the-odd-occurring-element-in-an-array-list\/\">python program to find the odd occurring element in an array list<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Lists are similar to dynamically sized arrays, which are declared in other languages(e.g., vector in C++ and ArrayList in Java). Lists do not have to be homogeneous all of the time, which makes it a very useful tool in Python. DataTypes such as Integers, Strings, and Objects can all be included in a single list. &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/python-how-to-insert-an-element-at-specific-index-in-list\/\"> <span class=\"screen-reader-text\">Python : How to Insert an element at specific index in List ?<\/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 : How to Insert an element at specific index in List ? - 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-how-to-insert-an-element-at-specific-index-in-list\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python : How to Insert an element at specific index in List ? - Python Programs\" \/>\n<meta property=\"og:description\" content=\"Lists are similar to dynamically sized arrays, which are declared in other languages(e.g., vector in C++ and ArrayList in Java). 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