<\/p>\n
Bir pandan\u0131n DataFrame’ine lambda i\u015flevi uygulamak i\u00e7in a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullanabilirsiniz:<\/span><\/p>\n A\u015fa\u011f\u0131daki \u00f6rnekler, bu s\u00f6zdiziminin pratikte a\u015fa\u011f\u0131daki pandalar DataFrame ile nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n A\u015fa\u011f\u0131daki kod, de\u011ferleri mevcut bir s\u00fctunun de\u011ferlerine ba\u011fl\u0131 olan yeni bir s\u00fctun olu\u015fturmak i\u00e7in application<\/strong> ve lambda’n\u0131n<\/strong> nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Bu \u00f6rnekte, a\u015fa\u011f\u0131daki de\u011ferleri alan durum<\/strong> ad\u0131nda yeni bir s\u00fctun olu\u015fturduk:<\/span><\/p>\n A\u015fa\u011f\u0131daki kod, DataFrame’de mevcut bir s\u00fctunu de\u011fi\u015ftirmek i\u00e7in application<\/strong> ve lambda’n\u0131n<\/strong> nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n Bu \u00f6rnekte, lambda fonksiyonunda a\u015fa\u011f\u0131daki kural\u0131 kullanarak mevcut nokta<\/strong> s\u00fctununun de\u011ferlerini de\u011fi\u015ftiriyoruz:<\/span><\/p>\n Bu lambda fonksiyonunu kullanarak mevcut nokta<\/strong> s\u00fctununun de\u011ferlerini de\u011fi\u015ftirebildik.<\/span><\/p>\n A\u015fa\u011f\u0131daki e\u011fitimlerde pandalarda di\u011fer ortak i\u015flevlerin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r:<\/span><\/p>\n Pandas Groupby’ye bir i\u015flev nas\u0131l uygulan\u0131r?<\/a> Bir pandan\u0131n DataFrame’ine lambda i\u015flevi uygulamak i\u00e7in a\u015fa\u011f\u0131daki temel s\u00f6zdizimini kullanabilirsiniz: df[‘ col ‘] = df[‘ col ‘]. apply ( lambda x: ‘ value1 ‘ if x < 20 else ‘ value2 ‘) A\u015fa\u011f\u0131daki \u00f6rnekler, bu s\u00f6zdiziminin pratikte a\u015fa\u011f\u0131daki pandalar DataFrame ile nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir: import pandas as pd #createDataFrame df = pd. DataFrame ({‘ […]<\/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-3273","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\n df[' col<\/span> '] = df[' col<\/span> ']. apply<\/span> ( lambda<\/span> x: ' value1<\/span> ' if<\/span> x < 20 else<\/span> ' value2<\/span> ')\n<\/strong><\/pre>\n import<\/span> pandas as<\/span> pd\n\n#createDataFrame\n<\/span>df = pd. DataFrame<\/span> ({' team<\/span> ': ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H'],\n ' points<\/span> ': [18, 22, 19, 14, 14, 11, 20, 28],\n ' assists<\/span> ': [5, 7, 7, 9, 12, 9, 9, 4]})\n\n#view DataFrame\n<\/span>print<\/span> (df)\n\n team points assists\n0 to 18 5\n1 B 22 7\n2 C 19 7\n3 D 14 9\n4 E 14 12\n5 F 11 9\n6 G 20 9\n7:28 a.m. 4\n<\/strong><\/pre>\n \u00d6rnek 1: Yeni bir s\u00fctun olu\u015fturmak i\u00e7in Uygula ve Lambda’y\u0131 kullan\u0131n<\/strong><\/span><\/h3>\n
#create new column called 'status'\ndf[' status<\/span> '] = df[' points<\/span> ']. apply<\/span> ( lambda<\/span> x: ' Bad<\/span> ' if<\/span> x < 20 else<\/span> ' Good<\/span> ')\n<\/span>\n#view updated DataFrame\nprint<\/span> (df)\n\n team points assists status\n0 A 18 5 Bad\n1 B 22 7 Good\n2 C 19 7 Bad\n3 D 14 9 Bad\n4 E 14 12 Bad\n5 F 11 9 Bad\n6 G 20 9 Good\n7:28 4 Good<\/span><\/span><\/strong><\/pre>\n\n
\u00d6rnek 2: Mevcut bir s\u00fctunu de\u011fi\u015ftirmek i\u00e7in Uygula ve Lambda’y\u0131 kullan\u0131n<\/strong><\/span><\/h3>\n
#modify existing 'points' column\ndf[' points<\/span> '] = df[' points<\/span> ']. apply<\/span> ( lambda<\/span> x: x\/2 if<\/span> x < 20 else<\/span> x*2)\n\n#view updated DataFrame\n<\/span>print<\/span> (df)\n\n team points assists\n0 to 9.0 5\n1 B 44.0 7\n2 C 9.5 7\n3D 7.0 9\n4 E 7.0 12\n5 F 5.5 9\n6 G 40.0 9\n7 A.M. 56.0 4<\/span><\/span><\/strong><\/pre>\n\n
Ek kaynaklar<\/strong><\/span><\/h2>\n
NaN, Pandas’ta ba\u015fka bir s\u00fctundaki de\u011ferlerle nas\u0131l doldurulur?<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"