{"id":978,"date":"2023-07-28T03:04:44","date_gmt":"2023-07-28T03:04:44","guid":{"rendered":"https:\/\/statorials.org\/tr\/pandalar-eksik-degerleri-sayar\/"},"modified":"2023-07-28T03:04:44","modified_gmt":"2023-07-28T03:04:44","slug":"pandalar-eksik-degerleri-sayar","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/pandalar-eksik-degerleri-sayar\/","title":{"rendered":"Pandas dataframe&#39;de eksik de\u011ferler nas\u0131l say\u0131l\u0131r?"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">\u00c7o\u011fu zaman bir pandan\u0131n DataFrame&#8217;indeki eksik de\u011ferlerin say\u0131s\u0131n\u0131 saymak isteyebilirsiniz.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Bu e\u011fitimde, a\u015fa\u011f\u0131daki DataFrame kullan\u0131larak eksik de\u011ferlerin nas\u0131l say\u0131laca\u011f\u0131na ili\u015fkin birka\u00e7 \u00f6rnek g\u00f6sterilmektedir:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> pandas <span style=\"color: #107d3f;\">as<\/span> pd\n<span style=\"color: #107d3f;\">import<\/span> numpy <span style=\"color: #107d3f;\">as<\/span> np\n\n<span style=\"color: #008080;\">#create DataFrame with some missing values<\/span>\ndf = pd.DataFrame({'a': [4, np.nan, np.nan, 7, 8, 12],\n                   'b': [np.nan, 6, 8, 14, 29, np.nan],\n                   'c': [11, 8, 10, 6, 6, np.nan]})\n\n<span style=\"color: #008080;\">#view DataFrame<\/span>\n<span style=\"color: #3366ff;\">print<\/span> (df)\n\n      ABC\n0 4.0 NaN 11.0\n1 NaN 6.0 8.0\n2 NaN 8.0 10.0\n3 7.0 14.0 6.0\n4 8.0 29.0 6.0\n5 12.0 NaN NaN\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>DataFrame&#8217;in tamam\u0131ndaki toplam eksik de\u011ferleri say\u0131n<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki kod, DataFrame&#8217;in tamam\u0131ndaki eksik de\u011ferlerin toplam say\u0131s\u0131n\u0131n nas\u0131l hesaplanaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">isnull<\/span> (). <span style=\"color: #3366ff;\">sum<\/span> (). <span style=\"color: #3366ff;\">sum<\/span> ()\n\n5<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Bu bize toplamda <strong>5<\/strong> eksik de\u011ferin oldu\u011funu s\u00f6yl\u00fcyor.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>S\u00fctun ba\u015f\u0131na toplam eksik de\u011ferleri say\u0131n<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki kod, DataFrame&#8217;in her s\u00fctunundaki toplam eksik de\u011fer say\u0131s\u0131n\u0131n nas\u0131l hesaplanaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">isnull<\/span> (). <span style=\"color: #3366ff;\">sum<\/span> ()\n\nat 2\nb 2\nc 1\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Bu bize \u015funlar\u0131 s\u00f6yl\u00fcyor:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">&#8220;a&#8221; s\u00fctununda <strong>2<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">&#8220;b&#8221; s\u00fctununda <strong>2<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">&#8220;c&#8221; s\u00fctununda <strong>1<\/strong> eksik de\u011fer var.<\/span><\/li>\n<\/ul>\n<p> Eksik de\u011ferlerin say\u0131s\u0131n\u0131 t\u00fcm s\u00fctunun y\u00fczdesi olarak da g\u00f6r\u00fcnt\u00fcleyebilirsiniz:<\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">isnull<\/span> (). <span style=\"color: #3366ff;\">sum<\/span> ()\/ <span style=\"color: #008000;\">len<\/span> (df)* <span style=\"color: #008000;\">100<\/span>\n\na 33.333333\nb 33.333333\nc 16.666667\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Bu bize \u015funlar\u0131 s\u00f6yl\u00fcyor:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u201ca\u201d s\u00fctunundaki de\u011ferlerin <strong>%33,33\u2019\u00fc<\/strong> eksik.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cb\u201d s\u00fctunundaki de\u011ferlerin <strong>%33,33\u2019\u00fc<\/strong> eksik.<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cc\u201d s\u00fctunundaki de\u011ferlerin <strong>%16,67\u2019si<\/strong> eksik.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>Sat\u0131r ba\u015f\u0131na toplam eksik de\u011ferleri say\u0131n<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">A\u015fa\u011f\u0131daki kod, DataFrame&#8217;in her sat\u0131r\u0131ndaki toplam eksik de\u011fer say\u0131s\u0131n\u0131n nas\u0131l hesaplanaca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">isnull<\/span> (). <span style=\"color: #3366ff;\">sum<\/span> (axis= <span style=\"color: #008000;\">1<\/span> )\n\n0 1\n1 1\n2 1\n30\n4 0\n5 2<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Bu bize \u015funlar\u0131 s\u00f6yl\u00fcyor:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Sat\u0131r 1&#8217;de <strong>1<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Sat\u0131r 2&#8217;de <strong>1<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">3. sat\u0131rda <strong>1<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Sat\u0131r 4&#8217;te <strong>0<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">Sat\u0131r 5&#8217;te <strong>0<\/strong> eksik de\u011fer var.<\/span><\/li>\n<li> <span style=\"color: #000000;\">6. sat\u0131rda <strong>2<\/strong> eksik de\u011fer var.<\/span><\/li>\n<\/ul>\n<h3> <span style=\"color: #000000;\"><strong>Ek kaynaklar<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/tr\/tek-pandalar-birden-fazla-sutun\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pandas&#8217;ta birden \u00e7ok s\u00fctunda benzersiz de\u011ferler nas\u0131l bulunur?<\/a><br \/> <a href=\"https:\/\/statorials.org\/tr\/sutunlara-dayali-pandalar-olustur\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pandalar&#8217;da bir ko\u015fula dayal\u0131 yeni bir s\u00fctun nas\u0131l olu\u015fturulur?<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00c7o\u011fu zaman bir pandan\u0131n DataFrame&#8217;indeki eksik de\u011ferlerin say\u0131s\u0131n\u0131 saymak isteyebilirsiniz. Bu e\u011fitimde, a\u015fa\u011f\u0131daki DataFrame kullan\u0131larak eksik de\u011ferlerin nas\u0131l say\u0131laca\u011f\u0131na ili\u015fkin birka\u00e7 \u00f6rnek g\u00f6sterilmektedir: import pandas as pd import numpy as np #create DataFrame with some missing values df = pd.DataFrame({&#8216;a&#8217;: [4, np.nan, np.nan, 7, 8, 12], &#8216;b&#8217;: [np.nan, 6, 8, 14, 29, np.nan], &#8216;c&#8217;: [11, [&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-978","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>DataFrame Pandas&#039;ta eksik de\u011ferler nas\u0131l say\u0131l\u0131r \u2013 Statorials<\/title>\n<meta name=\"description\" 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