{"id":3323,"date":"2023-10-21T17:09:06","date_gmt":"2023-10-21T11:39:06","guid":{"rendered":"https:\/\/python-programs.com\/?p=3323"},"modified":"2023-11-10T11:51:56","modified_gmt":"2023-11-10T06:21:56","slug":"7-ways-to-add-all-elements-of-list-to-set-in-python","status":"publish","type":"post","link":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/","title":{"rendered":"7 Ways to add all elements of list to set in python"},"content":{"rendered":"<h2>How to add all elements of list to set in python ?<\/h2>\n<p>As we know a <code>set<\/code> in python is a built-in\u00a0 data type which stores multiple unordered items in a single variable.<\/p>\n<p>Example of a set<\/p>\n<pre>my_set = {10,20,30,40}<\/pre>\n<p>Where,<\/p>\n<ul>\n<li>A set contains unique values.<\/li>\n<li>All items placed inside { }.<\/li>\n<\/ul>\n<p>Similarly, a <code>list<\/code> in python is a built-in\u00a0 data type which is used to store items of different types.<\/p>\n<p>Example of list<\/p>\n<pre>my_list = {30,40,50,60,70}<\/pre>\n<p>where,<\/p>\n<ul>\n<li>A list contains different types of values integer, float,\u00a0<em>string etc.<\/em><\/li>\n<li>All items placed inside [ ].<\/li>\n<\/ul>\n<p>When we will add all the items of the list to set it will look like this<\/p>\n<pre>{10,20,30,40,50,60,70}<\/pre>\n<p>Here, all the items are unique after adding as because list contains unique elements.<\/p>\n<h3>Method-1 : Add all elements of a list to set using update( ) function<\/h3>\n<p><code>Set class<\/code> provides an <code>update( )<\/code> method with the help of which all elements of list can be added to set.<\/p>\n<pre><span class=\"enlighter-text\">Syntax : set.<\/span><span class=\"enlighter-m1\">update<\/span><span class=\"enlighter-g1\">(<\/span><span class=\"enlighter-text\">sequences<\/span><span class=\"enlighter-g1\">)<\/span><\/pre>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">#Program :\r\n    \r\n#Represents a set\r\nmy_set = {10, 20, 30, 40}\r\n#Represents a list\r\nmy_list = [30, 40, 50, 60, 70, 80]\r\n# adding all elements in list to the set\r\nmy_set.update(my_list)\r\nprint('After adding list to set : ')\r\nprint(my_set)<\/pre>\n<pre>Output :\r\nAfter adding list to set : \r\n{10,20,30,40,50,60,70,80}<\/pre>\n<p>In the above program we just passed the list inside the update( ) method, the elements which are not present in set those got added and the elements which are present in set those got skipped as set contains only unique elements.<\/p>\n<h3>Method-2 : Add all elements of a list to set using add( ) function<\/h3>\n<p><code>Set class<\/code> provides an <code>add( )<\/code> method with the help of which all elements of list can be added to set.<\/p>\n<pre>Syntax : <span class=\"enlighter-text\">set.<\/span><span class=\"enlighter-m1\">add<\/span><span class=\"enlighter-g1\">(<\/span><span class=\"enlighter-text\">element<\/span><span class=\"enlighter-g1\">)<\/span><\/pre>\n<p>But the thing is that, add( ) only accept single element inside that. So, if we will pass list in that it will give <span class=\"enlighter-text\"><code>TypeError: unhashable type: <\/code><\/span><span class=\"enlighter-s0\">&#8216;list&#8217; as output.<\/span><\/p>\n<p>So to avoid this error we can use for loop and pass one by one element of the list inside <code>add( )<\/code> method.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">#Program :\r\n\r\n#Represents a set \r\nmy_set = {10, 20, 30, 40} \r\n#Represents a list \r\nmy_list = [30, 40, 50, 60, 70, 80] \r\n# adding all elements in list to the set \r\n# By iterating over all elements of list using for loop\r\nfor item in my_list:\r\n    # adding each element to the set\r\n    my_set.add(item)\r\nprint('After adding list to set : ') \r\nprint(my_set)<\/pre>\n<pre>Output : \r\nAfter adding list to set : \r\n{10,20,30,40,50,60,70,80}<\/pre>\n<h3>Method-3 : Add a list to set using add() &amp; union()<\/h3>\n<p>We can add content of two sets by using <code>union( )<\/code> method.<\/p>\n<pre>Syntax : <span class=\"enlighter-text\">s.<\/span><span class=\"enlighter-m1\">union<\/span><span class=\"enlighter-g1\">(<\/span><span class=\"enlighter-text\">t<\/span><span class=\"enlighter-g1\">)<\/span><\/pre>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#Program : \r\n\r\n#Represents a set \r\nmy_set = {10, 20, 30, 40} \r\n#Represents a list \r\nmy_list = [30, 40, 50, 60, 70, 80] \r\n#convert list to set\r\n#then add contents two sets \r\nmy_set = my_set.union(set(my_list)) \r\nprint('After adding list to set : ') \r\nprint(my_set)<\/pre>\n<pre>Output : \r\nAfter adding list to set : \r\n{10,20,30,40,50,60,70,80}<\/pre>\n<h3>Method-4 : Add all elements in a list to set using | operator<\/h3>\n<p>By creating union of 2 sets by using <code>| operator<\/code> , then we can add elements of two sets. So we have to convert our list to set by using <code>| operator<\/code>.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">#Program :\r\n\r\n#Represents a set \r\nmy_set = {10, 20, 30, 40} \r\n#Represents a list \r\nmy_list = [30, 40, 50, 60, 70, 80] \r\n# adding all elements in list to the set \r\n# by converting list to set \r\n# then get union of both the sets using | operator\r\nmy_set  |= set(my_list )\r\n\r\nprint('After adding list to set : ') \r\nprint(my_set)<\/pre>\n<pre>Output : \r\nAfter adding list to set : \r\n{10,20,30,40,50,60,70,80}<\/pre>\n<h3>Method-5 : Add a list to set using |= and unpacking list to set<\/h3>\n<p>We will add the elements of list to set just like previous solution means we will convert list to set then we will add the elements by finding union of two sets.<\/p>\n<p>But we will convert list to set by string literal and unpacking our lists elements inside it.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#Program : \r\n\r\n#Represents a set \r\nmy_set = {10, 20, 30, 40} \r\n#Represents a list \r\nmy_list = [30, 40, 50, 60, 70, 80] \r\n# adding all elements in list to the set \r\n# by converting list to set \r\n# then get union of both the sets using | operator \r\n# Unpacking elements and OR that with original set\r\nmy_set |= set(*my_list ) \r\nprint('After adding list to set : ') \r\nprint(my_set)<\/pre>\n<pre>Output : \r\nAfter adding list to set : \r\n{10,20,30,40,50,60,70,80}<\/pre>\n<h3>Add all elements from multiple lists to the set :<\/h3>\n<p>Suppose we have 2 different list then add the elements of both the list to set.<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\">#Program : \r\n\r\n#Represents a set \r\nmy_set = {10, 20, 30, 40} \r\n\r\n#Represents a list \r\nmy_list1 = [30, 40, 50, 60, 70] \r\nmy_list2= [80,90] \r\n# adding all elements in list to the set \r\nmy_set.update(my_list1,my_list2) \r\nprint('After adding list to set : ') \r\nprint(my_set)<\/pre>\n<pre>Output : \r\nAfter adding list to set : \r\n{10,20,30,40,50,60,70,80,90}<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>How to add all elements of list to set in python ? As we know a set in python is a built-in\u00a0 data type which stores multiple unordered items in a single variable. Example of a set my_set = {10,20,30,40} Where, A set contains unique values. All items placed inside { }. Similarly, a list &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/\"> <span class=\"screen-reader-text\">7 Ways to add all elements of list to set in python<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":9,"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>7 Ways to add all elements of list to set in python - 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\/7-ways-to-add-all-elements-of-list-to-set-in-python\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"7 Ways to add all elements of list to set in python - Python Programs\" \/>\n<meta property=\"og:description\" content=\"How to add all elements of list to set in python ? As we know a set in python is a built-in\u00a0 data type which stores multiple unordered items in a single variable. Example of a set my_set = {10,20,30,40} Where, A set contains unique values. All items placed inside { }. Similarly, a list &hellip; 7 Ways to add all elements of list to set in python Read More &raquo;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/\" \/>\n<meta property=\"og:site_name\" content=\"Python Programs\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/btechgeeks\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-21T11:39:06+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-10T06:21:56+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@btech_geeks\" \/>\n<meta name=\"twitter:site\" content=\"@btech_geeks\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Satyabrata Jena\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/python-programs.com\/#organization\",\"name\":\"BTech Geeks\",\"url\":\"https:\/\/python-programs.com\/\",\"sameAs\":[\"https:\/\/www.instagram.com\/btechgeeks\/\",\"https:\/\/www.linkedin.com\/in\/btechgeeks\",\"https:\/\/in.pinterest.com\/btechgeek\/\",\"https:\/\/www.youtube.com\/channel\/UC9MlCqdJ3lKqz2p5114SDIg\",\"https:\/\/www.facebook.com\/btechgeeks\",\"https:\/\/twitter.com\/btech_geeks\"],\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/python-programs.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/python-programs.com\/wp-content\/uploads\/2020\/11\/BTechGeeks.png\",\"contentUrl\":\"https:\/\/python-programs.com\/wp-content\/uploads\/2020\/11\/BTechGeeks.png\",\"width\":350,\"height\":70,\"caption\":\"BTech Geeks\"},\"image\":{\"@id\":\"https:\/\/python-programs.com\/#\/schema\/logo\/image\/\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/python-programs.com\/#website\",\"url\":\"https:\/\/python-programs.com\/\",\"name\":\"Python Programs\",\"description\":\"Python Programs with Examples, How To Guides on Python\",\"publisher\":{\"@id\":\"https:\/\/python-programs.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/python-programs.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#webpage\",\"url\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/\",\"name\":\"7 Ways to add all elements of list to set in python - Python Programs\",\"isPartOf\":{\"@id\":\"https:\/\/python-programs.com\/#website\"},\"datePublished\":\"2023-10-21T11:39:06+00:00\",\"dateModified\":\"2023-11-10T06:21:56+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/python-programs.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"7 Ways to add all elements of list to set in python\"}]},{\"@type\":\"Article\",\"@id\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#webpage\"},\"author\":{\"@id\":\"https:\/\/python-programs.com\/#\/schema\/person\/0f6d731bda7051ce3586f71299f391cd\"},\"headline\":\"7 Ways to add all elements of list to set in python\",\"datePublished\":\"2023-10-21T11:39:06+00:00\",\"dateModified\":\"2023-11-10T06:21:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#webpage\"},\"wordCount\":412,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/python-programs.com\/#organization\"},\"articleSection\":[\"Python\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#respond\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/python-programs.com\/#\/schema\/person\/0f6d731bda7051ce3586f71299f391cd\",\"name\":\"Satyabrata Jena\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/python-programs.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/c1bf8033ec357d085f41815bee1625cc?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/c1bf8033ec357d085f41815bee1625cc?s=96&d=mm&r=g\",\"caption\":\"Satyabrata Jena\"},\"url\":\"https:\/\/python-programs.com\/author\/satyabrata\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"7 Ways to add all elements of list to set in python - Python Programs","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/","og_locale":"en_US","og_type":"article","og_title":"7 Ways to add all elements of list to set in python - Python Programs","og_description":"How to add all elements of list to set in python ? As we know a set in python is a built-in\u00a0 data type which stores multiple unordered items in a single variable. Example of a set my_set = {10,20,30,40} Where, A set contains unique values. All items placed inside { }. Similarly, a list &hellip; 7 Ways to add all elements of list to set in python Read More &raquo;","og_url":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/","og_site_name":"Python Programs","article_publisher":"https:\/\/www.facebook.com\/btechgeeks","article_published_time":"2023-10-21T11:39:06+00:00","article_modified_time":"2023-11-10T06:21:56+00:00","twitter_card":"summary_large_image","twitter_creator":"@btech_geeks","twitter_site":"@btech_geeks","twitter_misc":{"Written by":"Satyabrata Jena","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Organization","@id":"https:\/\/python-programs.com\/#organization","name":"BTech Geeks","url":"https:\/\/python-programs.com\/","sameAs":["https:\/\/www.instagram.com\/btechgeeks\/","https:\/\/www.linkedin.com\/in\/btechgeeks","https:\/\/in.pinterest.com\/btechgeek\/","https:\/\/www.youtube.com\/channel\/UC9MlCqdJ3lKqz2p5114SDIg","https:\/\/www.facebook.com\/btechgeeks","https:\/\/twitter.com\/btech_geeks"],"logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/python-programs.com\/#\/schema\/logo\/image\/","url":"https:\/\/python-programs.com\/wp-content\/uploads\/2020\/11\/BTechGeeks.png","contentUrl":"https:\/\/python-programs.com\/wp-content\/uploads\/2020\/11\/BTechGeeks.png","width":350,"height":70,"caption":"BTech Geeks"},"image":{"@id":"https:\/\/python-programs.com\/#\/schema\/logo\/image\/"}},{"@type":"WebSite","@id":"https:\/\/python-programs.com\/#website","url":"https:\/\/python-programs.com\/","name":"Python Programs","description":"Python Programs with Examples, How To Guides on Python","publisher":{"@id":"https:\/\/python-programs.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/python-programs.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#webpage","url":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/","name":"7 Ways to add all elements of list to set in python - Python Programs","isPartOf":{"@id":"https:\/\/python-programs.com\/#website"},"datePublished":"2023-10-21T11:39:06+00:00","dateModified":"2023-11-10T06:21:56+00:00","breadcrumb":{"@id":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/python-programs.com\/"},{"@type":"ListItem","position":2,"name":"7 Ways to add all elements of list to set in python"}]},{"@type":"Article","@id":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#article","isPartOf":{"@id":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#webpage"},"author":{"@id":"https:\/\/python-programs.com\/#\/schema\/person\/0f6d731bda7051ce3586f71299f391cd"},"headline":"7 Ways to add all elements of list to set in python","datePublished":"2023-10-21T11:39:06+00:00","dateModified":"2023-11-10T06:21:56+00:00","mainEntityOfPage":{"@id":"https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#webpage"},"wordCount":412,"commentCount":0,"publisher":{"@id":"https:\/\/python-programs.com\/#organization"},"articleSection":["Python"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/python-programs.com\/7-ways-to-add-all-elements-of-list-to-set-in-python\/#respond"]}]},{"@type":"Person","@id":"https:\/\/python-programs.com\/#\/schema\/person\/0f6d731bda7051ce3586f71299f391cd","name":"Satyabrata Jena","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/python-programs.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/c1bf8033ec357d085f41815bee1625cc?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/c1bf8033ec357d085f41815bee1625cc?s=96&d=mm&r=g","caption":"Satyabrata Jena"},"url":"https:\/\/python-programs.com\/author\/satyabrata\/"}]}},"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/posts\/3323"}],"collection":[{"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/comments?post=3323"}],"version-history":[{"count":2,"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/posts\/3323\/revisions"}],"predecessor-version":[{"id":3325,"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/posts\/3323\/revisions\/3325"}],"wp:attachment":[{"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/media?parent=3323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/categories?post=3323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/python-programs.com\/wp-json\/wp\/v2\/tags?post=3323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}