{"id":4077,"date":"2023-07-13T18:20:22","date_gmt":"2023-07-13T18:20:22","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-czytaja-kolumne-upuszczania-csv\/"},"modified":"2023-07-13T18:20:22","modified_gmt":"2023-07-13T18:20:22","slug":"pandy-czytaja-kolumne-upuszczania-csv","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-czytaja-kolumne-upuszczania-csv\/","title":{"rendered":"Pandy: usu\u0144 okre\u015blon\u0105 kolumn\u0119 podczas importowania pliku csv"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej podstawowej sk\u0142adni, aby usun\u0105\u0107 okre\u015blon\u0105 kolumn\u0119 podczas importowania pliku CSV do ramki DataFrame pandy:<\/span><\/p>\n

 df = pd. read_csv<\/span> (' basketball_data.csv<\/span> ', usecols= lambda<\/span> x:x !=<\/span> ' rebounds<\/span> ')<\/strong>\n<\/pre>\n
 W tym konkretnym przyk\u0142adzie ka\u017cda kolumna z pliku CSV o nazwie koszyk\u00f3wka_data.csv<\/strong> zostanie wczytana do ramki DataFrame pandy, z wyj\u0105tkiem kolumny o nazwie Rebounds<\/strong> .<\/span><\/p>\n
 Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce.<\/span><\/p>\n
 Przyk\u0142ad: Usu\u0144 okre\u015blon\u0105 kolumn\u0119 podczas importowania pliku CSV do Pand<\/strong><\/span><\/h2>\n
 Za\u0142\u00f3\u017cmy, \u017ce mamy nast\u0119puj\u0105cy plik CSV o nazwie koszyk\u00f3wka_data.csv<\/strong> :<\/span> <\/p>\n
\"\"<\/p>\n
 Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby zaimportowa\u0107 plik CSV do pand i usun\u0105\u0107 podczas importu kolumn\u0119 o nazwie \u201eodbicia\u201d<\/strong> :<\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\n\n#import all columns except 'rebounds' into DataFrame\n<\/span>df = pd. read_csv<\/span> (' basketball_data.csv<\/span> ', usecols= lambda<\/span> x:x !=<\/span> ' rebounds<\/span> ')\n\n#view resulting DataFrame\n<\/span>print<\/span> (df)\n\n  team points\n0 to 22\n1 B 14\n2 C 29\n3 D 30<\/strong><\/b><\/pre>\n
 Pami\u0119taj, \u017ce kolumna odrzuce\u0144<\/strong> zosta\u0142a usuni\u0119ta, gdy zaimportowali\u015bmy plik CSV do pand.<\/span><\/p>\n
 Je\u015bli podczas importu chcesz usun\u0105\u0107 wiele kolumn, mo\u017cesz u\u017cy\u0107 operatora not in<\/strong> w nast\u0119puj\u0105cy spos\u00f3b:<\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\n\n#import all columns except 'team' and 'rebounds' into DataFrame\n<\/span>df=pd. read_csv<\/span> (' basketball_data.csv<\/span> ', usecols= lambda<\/span> x:x not in<\/span> [' team<\/span> ', ' rebounds<\/span> '])\n\n#view resulting DataFrame\n<\/span>print<\/span> (df)\n\n   points\n0 22\n1 14\n2 29\n3 30<\/strong><\/b><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce kolumny dru\u017cyny<\/strong> i zbi\u00f3rek<\/strong> zosta\u0142y usuni\u0119te, gdy zaimportowali\u015bmy plik CSV do pand.<\/span><\/p>\n
 Pami\u0119taj, \u017ce po operatorze not in<\/strong> mo\u017cesz umie\u015bci\u0107 na li\u015bcie dowoln\u0105 liczb\u0119 nazw kolumn, aby usun\u0105\u0107 dowoln\u0105 liczb\u0119 kolumn podczas importowania pliku CSV.<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h2>\n
 Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe zadania w Pythonie:<\/span><\/p>\n
 Pandy: Jak pomin\u0105\u0107 linie podczas czytania pliku CSV<\/a>
 Pandy: Jak doda\u0107 dane do istniej\u0105cego pliku CSV<\/a>
 Pandy: jak u\u017cywa\u0107 read_csv z argumentem usecols<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej podstawowej sk\u0142adni, aby usun\u0105\u0107 okre\u015blon\u0105 kolumn\u0119 podczas importowania pliku CSV do ramki DataFrame pandy: df = pd. read_csv (’ basketball_data.csv ’, usecols= lambda x:x != ’ rebounds ’) W tym konkretnym przyk\u0142adzie ka\u017cda kolumna z pliku CSV o nazwie koszyk\u00f3wka_data.csv zostanie wczytana do ramki DataFrame pandy, z wyj\u0105tkiem kolumny o nazwie Rebounds […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-4077","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nPandy: usu\u0144 okre\u015blon\u0105 kolumn\u0119 podczas importu pliku CSV - Statologia<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak usun\u0105\u0107 okre\u015blon\u0105 kolumn\u0119 podczas importowania pliku CSV do pand.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/pandy-czytaja-kolumne-upuszczania-csv\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandy: usu\u0144 okre\u015blon\u0105 kolumn\u0119 podczas importu pliku CSV - 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