{"id":2212,"date":"2023-07-23T05:51:22","date_gmt":"2023-07-23T05:51:22","guid":{"rendered":"https:\/\/statorials.org\/tr\/pandalar-sutundaki-belirli-degeri-sayar\/"},"modified":"2023-07-23T05:51:22","modified_gmt":"2023-07-23T05:51:22","slug":"pandalar-sutundaki-belirli-degeri-sayar","status":"publish","type":"post","link":"https:\/\/statorials.org\/tr\/pandalar-sutundaki-belirli-degeri-sayar\/","title":{"rendered":"Pandalar: bir s\u00fctunda belirli de\u011ferin olu\u015fumlar\u0131n\u0131n nas\u0131l say\u0131laca\u011f\u0131"},"content":{"rendered":"

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Bir panda DataFrame s\u00fctununda belirli bir de\u011ferin olu\u015fumlar\u0131n\u0131 saymak i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabilirsiniz:<\/span><\/p>\n

 df[' column_name<\/span> ']. value_counts<\/span> ()[ value<\/span> ]\n<\/strong><\/pre>\n
 De\u011ferin<\/strong> bir say\u0131 veya karakter olabilece\u011fini unutmay\u0131n.<\/span><\/p>\n
 A\u015fa\u011f\u0131daki \u00f6rnekler bu s\u00f6zdiziminin pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6stermektedir.<\/span><\/p>\n
 \u00d6rnek 1: Bir dizenin bir s\u00fctundaki olu\u015fumlar\u0131n\u0131 say\u0131n<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki kod, bir pandas DataFrame s\u00fctununda belirli bir dizenin olu\u015fum say\u0131s\u0131n\u0131n nas\u0131l say\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\n\n#createDataFrame\ndf = pd. DataFrame<\/span> ({' team<\/span> ': ['A', 'A', 'B', 'B', 'B', 'B', 'C', 'C'],\n                   ' points<\/span> ': [25, 12, 15, 14, 19, 23, 25, 29],\n                   ' assists<\/span> ': [5, 7, 7, 9, 12, 9, 9, 4],\n                   ' rebounds<\/span> ': [11, 8, 10, 6, 6, 5, 9, 12]})\n\n#count occurrences of the value 'B' in the 'team' column\ndf[' team<\/span> ']. value_counts<\/span> ()[' B<\/span> ']<\/span><\/span>\n\n4<\/span><\/span><\/strong><\/pre>\n
 Sonu\u00e7ta \u201ctak\u0131m\u201d s\u00fctununda \u201cB\u201d harfinin 4<\/strong> kez ge\u00e7ti\u011fini g\u00f6rebiliriz.<\/span><\/p>\n
 Her benzersiz de\u011ferin “ekip” s\u00fctununda ne s\u0131kl\u0131kla g\u00f6r\u00fcnd\u00fc\u011f\u00fcn\u00fc belirlemek i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini de kullanabilece\u011fimizi unutmay\u0131n:<\/span><\/p>\n
 #count occurrences of every unique value in the 'team' column<\/span>\ndf[' team<\/span> ']. value_counts<\/span> ()\n\nB4\nAt 2\nC 2\nName: team, dtype: int64<\/span><\/span><\/strong><\/pre>\n
 \u00d6rnek 2: Bir s\u00fctundaki say\u0131sal de\u011ferin olu\u015fumlar\u0131n\u0131 say\u0131n<\/strong><\/span><\/h3>\n
 A\u015fa\u011f\u0131daki kod, bir panda DataFrame s\u00fctununda say\u0131sal bir de\u011ferin olu\u015fum say\u0131s\u0131n\u0131n nas\u0131l say\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\n\n#createDataFrame\ndf = pd. DataFrame<\/span> ({' team<\/span> ': ['A', 'A', 'B', 'B', 'B', 'B', 'C', 'C'],\n                   ' points<\/span> ': [25, 12, 15, 14, 19, 23, 25, 29],\n                   ' assists<\/span> ': [5, 7, 7, 9, 12, 9, 9, 4],\n                   ' rebounds<\/span> ': [11, 8, 10, 6, 6, 5, 9, 12]})\n\n#count occurrences of the value 9 in the 'assists' column\n<\/span>df[' assists<\/span> ']. value_counts<\/span> ()[ 9<\/span> ]\n\n3<\/span><\/span><\/strong><\/pre>\n
 Sonu\u00e7ta \u201casist\u201d s\u00fctununda 9 de\u011ferinin 3<\/strong> kez g\u00f6r\u00fcnd\u00fc\u011f\u00fcn\u00fc g\u00f6rebiliriz.<\/span><\/p>\n
 Her benzersiz de\u011ferin “yard\u0131mlar” s\u00fctununda ne s\u0131kl\u0131kla g\u00f6r\u00fcnd\u00fc\u011f\u00fcn\u00fc belirlemek i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini de kullanabiliriz:<\/span><\/p>\n
 #count occurrences of every unique value in the 'assists' column\n<\/span>df[' assists<\/span> ']. value_counts<\/span> ()\n\n9 3\n7 2\n5 1\n12 1\n4 1\nName: assists, dtype: int64<\/span><\/span><\/strong><\/pre>\n
 Sonu\u00e7tan \u015funu g\u00f6rebiliriz:<\/span><\/p>\n