{"id":4130,"date":"2023-07-13T09:43:42","date_gmt":"2023-07-13T09:43:42","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/"},"modified":"2023-07-13T09:43:42","modified_gmt":"2023-07-13T09:43:42","slug":"pandy-lacza-pliki-csv","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/","title":{"rendered":"Jak po\u0142\u0105czy\u0107 wiele plik\u00f3w csv w pandach (z przyk\u0142adem)"},"content":{"rendered":"

<\/p>\n

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Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej podstawowej sk\u0142adni, aby po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV znajduj\u0105cych si\u0119 w tym samym folderze w ramk\u0119 DataFrame pandy:<\/span><\/p>\n

 import<\/span> pandas as<\/span> pd\nimport<\/span> glob\nimport<\/span> bone\n\n#define path to CSV files\n<\/span>path = r' C:\\Users\\bob\\Documents\\my_data_files<\/span> '\n\n#identify all CSV files\n<\/span>all_files = glob. glob<\/span> ( os.path.join<\/span> (\" *.csv<\/span> \"<\/span> ))\n\n#merge all CSV files into one DataFrame\n<\/span>df = pd. concat<\/span> ((pd. read_csv<\/span> (f) for<\/span> f in<\/span> all_files), ignore_index= True<\/span> )\n<\/span><\/span><\/strong><\/pre>\n
 Ten konkretny przyk\u0142ad po\u0142\u0105czy wszystkie pliki CSV znajduj\u0105ce si\u0119 w folderze o nazwie my_data_files<\/strong> w pojedyncz\u0105 ramk\u0119 danych Pandas.<\/span><\/p>\n
 Poni\u017cszy przyk\u0142ad pokazuje, jak zastosowa\u0107 t\u0119 sk\u0142adni\u0119 w praktyce.<\/span><\/p>\n
 Przyk\u0142ad: Scal wiele plik\u00f3w CSV w Pandach<\/strong><\/span><\/h2>\n
 Za\u0142\u00f3\u017cmy, \u017ce mam na komputerze folder o nazwie my_data_files<\/strong> , kt\u00f3ry zawiera trzy pliki CSV:<\/span> <\/p>\n
\"\"<\/p>\n
 Ka\u017cdy plik CSV zawiera dwie kolumny zwane punktami<\/strong> i asystami<\/strong> , kt\u00f3re reprezentuj\u0105 punkty i asysty r\u00f3\u017cnych koszykarzy.<\/span><\/p>\n
 Tak wygl\u0105da pierwszy plik CSV o nazwie df1<\/strong> :<\/span> <\/p>\n
\"\"<\/p>\n
 Mo\u017cemy u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby po\u0142\u0105czy\u0107 trzy pliki CSV w folderze w pojedyncz\u0105 ramk\u0119 danych pandy:<\/span><\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\nimport<\/span> glob\nimport<\/span> bone\n\n#define path to CSV files\n<\/span>path = r' C:\\Users\\bob\\Documents\\my_data_files<\/span> '\n\n#identify all CSV files\n<\/span>all_files = glob. glob<\/span> ( os.path.join<\/span> (\" *.csv<\/span> \"<\/span> ))\n\n#merge all CSV files into one DataFrame\n<\/span>df = pd. concat<\/span> ((pd. read_csv<\/span> (f) for<\/span> f in<\/span> all_files), ignore_index= True<\/span> )\n\n#view resulting DataFrame<\/span>\nprint<\/span> (df)\n\n    assist points\n0 4 3\n1 5 2\n2 5 4\n3 6 4\n4 8 6\n5 9 3\n6 2 3\n7 10 2\n8 14 9\n9 15 3\n10 6 10\n11 8 6\n12 9 4\n<\/span><\/span><\/strong><\/pre>\n
 Nale\u017cy pami\u0119ta\u0107, \u017ce wszystkie trzy pliki CSV zosta\u0142y pomy\u015blnie zaimportowane i po\u0142\u0105czone w jedn\u0105 ramk\u0119 danych.<\/span><\/p>\n
 Ostateczna ramka danych zawiera 13 wierszy i 2 kolumny.<\/span><\/p>\n
 Uwaga<\/strong> : pe\u0142n\u0105 dokumentacj\u0119 funkcji pandy read_csv()<\/strong> mo\u017cna znale\u017a\u0107 tutaj<\/a> .<\/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 okre\u015bli\u0107 typy podczas importowania pliku CSV<\/a>
 Pandy: Jak ustawi\u0107 nazwy kolumn podczas importowania pliku CSV<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej podstawowej sk\u0142adni, aby po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV znajduj\u0105cych si\u0119 w tym samym folderze w ramk\u0119 DataFrame pandy: import pandas as pd import glob import bone #define path to CSV files path = r’ C:\\Users\\bob\\Documents\\my_data_files ’ #identify all CSV files all_files = glob. glob ( os.path.join (” *.csv ” )) #merge all CSV […]<\/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-4130","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV w Pandach (z przyk\u0142adem) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV w pandach.\" \/>\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-lacza-pliki-csv\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV w Pandach (z przyk\u0142adem) \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV w pandach.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-13T09:43:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/statorials.org\/wp-content\/uploads\/2023\/08\/fusioncsv1.jpg\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/\",\"name\":\"Jak po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV w Pandach (z przyk\u0142adem) \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-13T09:43:42+00:00\",\"dateModified\":\"2023-07-13T09:43:42+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, na przyk\u0142adzie, jak po\u0142\u0105czy\u0107 wiele plik\u00f3w CSV w pandach.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-lacza-pliki-csv\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak po\u0142\u0105czy\u0107 wiele plik\u00f3w csv w pandach (z przyk\u0142adem)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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