{"id":26345,"date":"2022-12-17T05:53:57","date_gmt":"2022-12-17T00:23:57","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-can-i-add-the-numbers-of-tuples-from-different-lists-of-a-a-list-in-python-closed\/"},"modified":"2022-12-17T05:53:57","modified_gmt":"2022-12-17T00:23:57","slug":"solved-how-can-i-add-the-numbers-of-tuples-from-different-lists-of-a-a-list-in-python-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-can-i-add-the-numbers-of-tuples-from-different-lists-of-a-a-list-in-python-closed\/","title":{"rendered":"[Solved] How can i add the numbers of tuples from different lists of a a list in Python? [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-59400086\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"59400086\" data-parentid=\"59400007\" data-score=\"-1\" data-position-on-page=\"2\" data-highest-scored=\"0\" data-question-has-accepted-highest-score=\"0\" itemprop=\"suggestedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>If the &#8220;list names&#8221; are always in the same order, you can do this using a list comprehension with <code>zip<\/code> and <code>sum<\/code>:<\/p>\n<pre class=\"lang-py prettyprint-override\"><code>&gt;&gt;&gt; data = [[('Lista-A', 1), ('Lista-X', 1), ('Lista-Z', 4)], [('Lista-A', 2), ('Lista-X', 0), ('Lista-Z', 1)], [('Lista-A', 5), ('Lista-X', 1), ('Lista-Z', 0)], [('Lista-A', 0), ('Lista-X', 1), ('Lista-Z', 4)]]\n&gt;&gt;&gt; [(col[0][0], sum(x for _, x in col)) for col in zip(*data)]\n[('Lista-A', 8), ('Lista-X', 3), ('Lista-Z', 9)]\n<\/code><\/pre>\n<p><code>zip(*data)<\/code> is a standard way to iterate over &#8220;columns&#8221; from a list of &#8220;rows&#8221;. Assuming the columns do line up, then each column contains all the numbers to be summed for the same &#8220;list name&#8221;. The <code>sum<\/code> function adds the numbers; the columns contain tuples where we want to sum the numbers in the second component, hence the destructuring assignment <code>_, x<\/code>.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How can i add the numbers of tuples from different lists of a a list in Python? [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] If the &#8220;list names&#8221; are always in the same order, you can do this using a list comprehension with zip and sum: &gt;&gt;&gt; data = [[(&#8216;Lista-A&#8217;, 1), (&#8216;Lista-X&#8217;, 1), (&#8216;Lista-Z&#8217;, 4)], [(&#8216;Lista-A&#8217;, 2), (&#8216;Lista-X&#8217;, 0), (&#8216;Lista-Z&#8217;, 1)], [(&#8216;Lista-A&#8217;, 5), (&#8216;Lista-X&#8217;, 1), (&#8216;Lista-Z&#8217;, 0)], [(&#8216;Lista-A&#8217;, 0), (&#8216;Lista-X&#8217;, 1), (&#8216;Lista-Z&#8217;, 4)]] &gt;&gt;&gt; [(col[0][0], sum(x for _, &#8230; <a title=\"[Solved] How can i add the numbers of tuples from different lists of a a list in Python? [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-can-i-add-the-numbers-of-tuples-from-different-lists-of-a-a-list-in-python-closed\/\" aria-label=\"More on [Solved] How can i add the numbers of tuples from different lists of a a list in Python? [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[349,4333],"class_list":["post-26345","post","type-post","status-publish","format-standard","hentry","category-solved","tag-python","tag-python-3-7"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] How can i add the numbers of tuples from different lists of a a list in Python? 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[closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] If the &#8220;list names&#8221; are always in the same order, you can do this using a list comprehension with zip and sum: &gt;&gt;&gt; data = [[(&#039;Lista-A&#039;, 1), (&#039;Lista-X&#039;, 1), (&#039;Lista-Z&#039;, 4)], [(&#039;Lista-A&#039;, 2), (&#039;Lista-X&#039;, 0), (&#039;Lista-Z&#039;, 1)], [(&#039;Lista-A&#039;, 5), (&#039;Lista-X&#039;, 1), (&#039;Lista-Z&#039;, 0)], [(&#039;Lista-A&#039;, 0), (&#039;Lista-X&#039;, 1), (&#039;Lista-Z&#039;, 4)]] &gt;&gt;&gt; [(col[0][0], sum(x for _, ... 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