{"id":33821,"date":"2023-02-14T10:29:36","date_gmt":"2023-02-14T04:59:36","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-python-how-to-replace-adjacent-list-elements-with-a-different-value\/"},"modified":"2023-02-14T10:29:36","modified_gmt":"2023-02-14T04:59:36","slug":"solved-python-how-to-replace-adjacent-list-elements-with-a-different-value","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-python-how-to-replace-adjacent-list-elements-with-a-different-value\/","title":{"rendered":"[Solved] Python &#8211; How to replace adjacent list elements with a different value"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-38597986\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"38597986\" data-parentid=\"38597578\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" 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>And yes , you can just pass with if\/else and for loops : <\/p>\n<pre><code> a = [[0,0,0,0,0],\n      [0,1,1,0,0],\n      [0,1,0,1,0],\n      [0,0,1,0,0],\n      [0,0,0,0,0]]\n\n to_replace = 1\n replacement = 9 \n\n for i in range(len(a)):\n     for x in range(len(a[i])):\n        if a[i][x] == to_replace:\n            for pos_x in range(i-1,i+2):\n                for pos_y in range(x-1,x+2):\n                    try:\n                        if  a[pos_x][pos_y] != to_replace:\n                            a[pos_x][pos_y] = replacement\n                    except IndexError:\n                        print \"Out of  list range\" #may happen when to_replace is in corners\n for line in a:\n     print line \n\n #this will give you \n # [9, 9, 9, 9, 0]\n # [9, 1, 1, 9, 9]\n # [9, 1, 9, 1, 9]\n # [9, 9, 1, 9, 9]\n # [0, 9, 9, 9, 0]\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Python &#8211; How to replace adjacent list elements with a different value <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] And yes , you can just pass with if\/else and for loops : a = [[0,0,0,0,0], [0,1,1,0,0], [0,1,0,1,0], [0,0,1,0,0], [0,0,0,0,0]] to_replace = 1 replacement = 9 for i in range(len(a)): for x in range(len(a[i])): if a[i][x] == to_replace: for pos_x in range(i-1,i+2): for pos_y in range(x-1,x+2): try: if a[pos_x][pos_y] != to_replace: a[pos_x][pos_y] = replacement &#8230; <a title=\"[Solved] Python &#8211; How to replace adjacent list elements with a different value\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-python-how-to-replace-adjacent-list-elements-with-a-different-value\/\" aria-label=\"More on [Solved] Python &#8211; How to replace adjacent list elements with a different value\">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":[540,349,499],"class_list":["post-33821","post","type-post","status-publish","format-standard","hentry","category-solved","tag-list","tag-python","tag-python-2-7"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Python - How to replace adjacent list elements with a different value - JassWeb<\/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:\/\/jassweb.com\/solved\/solved-python-how-to-replace-adjacent-list-elements-with-a-different-value\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Python - How to replace adjacent list elements with a different value - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] And yes , you can just pass with if\/else and for loops : a = [[0,0,0,0,0], [0,1,1,0,0], [0,1,0,1,0], [0,0,1,0,0], [0,0,0,0,0]] to_replace = 1 replacement = 9 for i in range(len(a)): for x in range(len(a[i])): if a[i][x] == to_replace: for pos_x in range(i-1,i+2): for pos_y in range(x-1,x+2): try: if a[pos_x][pos_y] != to_replace: a[pos_x][pos_y] = replacement ... 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