{"id":1946,"date":"2023-07-24T08:42:58","date_gmt":"2023-07-24T08:42:58","guid":{"rendered":"https:\/\/statorials.org\/tr\/pandalar-iki-sutunu-cikarir\/"},"modified":"2023-07-24T08:42:58","modified_gmt":"2023-07-24T08:42:58","slug":"pandalar-iki-sutunu-cikarir","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/pandalar-iki-sutunu-cikarir\/","title":{"rendered":"Pandas dataframe&#39;de iki s\u00fctun nas\u0131l \u00e7\u0131kar\u0131l\u0131r"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Pandas DataFrame&#8217;de bir s\u00fctunu di\u011ferinden \u00e7\u0131karmak i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabilirsiniz:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#subtract column 'B' from column 'A'<\/span>\ndf[' <span style=\"color: #ff0000;\">AB<\/span> '] = df. <span style=\"color: #3366ff;\">A<\/span> - df. <span style=\"color: #3366ff;\">B\n<\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki \u00f6rnekler bu s\u00f6zdiziminin pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u00d6rnek 1: Pandas&#8217;ta iki s\u00fctunu \u00e7\u0131kar\u0131n<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki kod, bir pandas DataFrame&#8217;de bir s\u00fctunun di\u011ferinden nas\u0131l \u00e7\u0131kar\u0131laca\u011f\u0131n\u0131 ve sonucun yeni bir s\u00fctuna nas\u0131l atanaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<\/span> \ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">A<\/span> ': [25, 12, 15, 14, 19, 23, 25, 29],\n                   ' <span style=\"color: #ff0000;\">B<\/span> ': [5, 7, 8, 9, 12, 9, 12, 4],\n                   ' <span style=\"color: #ff0000;\">C<\/span> ': [11, 8, 10, 6, 6, 5, 9, 12]})\n\n<span style=\"color: #008080;\">#subtract column B from column A<\/span>\ndf[' <span style=\"color: #ff0000;\">AB<\/span> '] = df. <span style=\"color: #3366ff;\">A<\/span> - df. <span style=\"color: #3366ff;\">B<\/span>\n\n<span style=\"color: #008080;\">#view DataFrame<\/span>\ndf\n\n        A B C AB\n0 25 5 11 20\n1 12 7 8 5\n2 15 8 10 7\n3 14 9 6 5\n4 19 12 6 7\n5 23 9 5 14\n6 25 12 9 13\n7 29 4 12 25\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">&#8216; <strong>AB<\/strong> &#8216; ad\u0131 verilen yeni s\u00fctun, B s\u00fctunundaki de\u011ferlerin A s\u00fctunundaki de\u011ferlerden \u00e7\u0131kar\u0131lmas\u0131n\u0131n sonu\u00e7lar\u0131n\u0131 g\u00f6r\u00fcnt\u00fcler.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>\u00d6rnek 2: Eksik de\u011ferleri olan iki s\u00fctunu \u00e7\u0131kar\u0131n<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Pandas DataFrame&#8217;de bir s\u00fctunu di\u011ferinden \u00e7\u0131kar\u0131rsak ve s\u00fctunlardan birinde eksik de\u011ferler varsa, \u00e7\u0131karma i\u015fleminin sonucu her zaman eksik bir de\u011fer olacakt\u0131r:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n<span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#create DataFrame with some missing values<\/span>\n<span style=\"color: #000000;\">df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">A<\/span> ': [25, 12, 15, 14, 19, 23, 25, 29],\n                   ' <span style=\"color: #ff0000;\">B<\/span> ': [5, 7, np. <span style=\"color: #3366ff;\">no<\/span> , 9, 12, np. <span style=\"color: #3366ff;\">no<\/span> , 12, 4],\n                   ' <span style=\"color: #ff0000;\">C<\/span> ': [np. <span style=\"color: #3366ff;\">no<\/span> , 8, 10, 6, 6, 5, 9, 12]}) \n<\/span>\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#subtract column B from column A<\/span>\ndf[' <span style=\"color: #ff0000;\">AB<\/span> '] = df. <span style=\"color: #3366ff;\">A<\/span> - df. <span style=\"color: #3366ff;\">B\n<\/span>\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n\tA B C AB\n0 25 5.0 NaN 20.0\n1 12 7.0 8.0 5.0\n2 15 NaN 10.0 NaN\n3 14 9.0 6.0 5.0\n4 19 12.0 6.0 7.0\n5 23 NaN 5.0 NaN\n6 25 12.0 9.0 13.0\n7 29 4.0 12.0 25.0\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">\u0130sterseniz bir s\u00fctunu di\u011ferinden \u00e7\u0131karmadan \u00f6nce <strong>df.fillna(0)<\/strong> i\u015flevini kullanarak dataFrame&#8217;deki t\u00fcm eksik de\u011ferleri s\u0131f\u0131rlarla de\u011fi\u015ftirebilirsiniz:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n<span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n\n<span style=\"color: #008080;\">#create DataFrame with some missing values<\/span>\n<span style=\"color: #000000;\">df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">A<\/span> ': [25, 12, 15, 14, 19, 23, 25, 29],\n                   ' <span style=\"color: #ff0000;\">B<\/span> ': [5, 7, np. <span style=\"color: #3366ff;\">no<\/span> , 9, 12, np. <span style=\"color: #3366ff;\">no<\/span> , 12, 4],\n                   ' <span style=\"color: #ff0000;\">C<\/span> ': [np. <span style=\"color: #3366ff;\">no<\/span> , 8, 10, 6, 6, 5, 9, 12]}) \n<\/span>\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#replace all missing values with zeros\n<\/span>df = df. <span style=\"color: #3366ff;\">fillna<\/span> ( <span style=\"color: #008000;\">0<\/span> )\n\n<span style=\"color: #008080;\">#subtract column B from column A<\/span>\ndf[' <span style=\"color: #ff0000;\">AB<\/span> '] = df. <span style=\"color: #ff0000;\">A<\/span> - df. <span style=\"color: #ff0000;\">B<\/span>\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\tA B C AB\n0 25 5.0 0.0 20.0\n1 12 7.0 8.0 5.0\n2 15 0.0 10.0 15.0\n3 14 9.0 6.0 5.0\n4 19 12.0 6.0 7.0\n5 23 0.0 5.0 23.0\n6 25 12.0 9.0 13.0\n7 29 4.0 12.0 25.0<\/span><\/span><\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Ek kaynaklar<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/tr\/pandalar-veri-cercevesine-satir-ekler\/\" target=\"_blank\" rel=\"noopener\">Pandas DataFrame&#8217;e sat\u0131rlar nas\u0131l eklenir<\/a><br \/> <a href=\"https:\/\/statorials.org\/tr\/pandalarin-veri-cercevesine-numpy-dizisi-ekleyin\/\" target=\"_blank\" rel=\"noopener\">Pandas DataFrame&#8217;e Numpy dizisi nas\u0131l eklenir<\/a><br \/> Pandas DataFrame&#8217;deki sat\u0131r say\u0131s\u0131 nas\u0131l say\u0131l\u0131r?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pandas DataFrame&#8217;de bir s\u00fctunu di\u011ferinden \u00e7\u0131karmak i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabilirsiniz: #subtract column &#8216;B&#8217; from column &#8216;A&#8217; df[&#8216; AB &#8216;] = df. A &#8211; df. B A\u015fa\u011f\u0131daki \u00f6rnekler bu s\u00f6zdiziminin pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir. \u00d6rnek 1: Pandas&#8217;ta iki s\u00fctunu \u00e7\u0131kar\u0131n A\u015fa\u011f\u0131daki kod, bir pandas DataFrame&#8217;de bir s\u00fctunun di\u011ferinden nas\u0131l \u00e7\u0131kar\u0131laca\u011f\u0131n\u0131 ve sonucun yeni bir s\u00fctuna nas\u0131l [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-1946","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pandas DataFrame&#039;de iki s\u00fctun nas\u0131l \u00e7\u0131kar\u0131l\u0131r \u2013 Statorials<\/title>\n<meta name=\"description\" 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