{"id":2520,"date":"2023-07-21T22:03:56","date_gmt":"2023-07-21T22:03:56","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/"},"modified":"2023-07-21T22:03:56","modified_gmt":"2023-07-21T22:03:56","slug":"pandy-znajduja-duplikaty","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/","title":{"rendered":"Jak znale\u017a\u0107 duplikaty w ramce danych pandas (z przyk\u0142adami)"},"content":{"rendered":"

<\/p>\n

\n

Mo\u017cesz u\u017cy\u0107 funkcji duplikowanej()<\/a> , aby znale\u017a\u0107 zduplikowane warto\u015bci w ramce DataFrame pandy.<\/span><\/p>\n

Ta funkcja wykorzystuje nast\u0119puj\u0105c\u0105 podstawow\u0105 sk\u0142adni\u0119:<\/span><\/p>\n

 #find duplicate rows across all columns<\/span>\nduplicateRows = df[df. duplicated<\/span> ()]\n\n#find duplicate rows across specific columns<\/span>\nduplicateRows = df[df. duplicated<\/span> ([' col1<\/span> ',' col2<\/span> '])]\n<\/strong><\/pre>\n
 Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce u\u017cywa\u0107 tej funkcji z nast\u0119puj\u0105c\u0105 ramk\u0105 DataFrame pand:<\/span><\/p>\n
 import<\/span> pandas as<\/span> pd\n\n#createDataFrame\ndf = pd. DataFrame<\/span> ({' team<\/span> ': ['A', 'A', 'A', 'A', 'B', 'B', 'B', 'B'],\n                   ' points<\/span> ': [10, 10, 12, 12, 15, 17, 20, 20],\n                   ' assists<\/span> ': [5, 5, 7, 9, 12, 9, 6, 6]})\n\n#view DataFrame\n<\/span>print<\/span> (df)\n\n  team points assists\n0 to 10 5\n1 to 10 5\n2 to 12 7\n3 to 12 9\n4 B 15 12\n5 B 17 9\n6 B 20 6\n7 B 20 6\n<\/span><\/span><\/strong><\/pre>\n
 Przyk\u0142ad 1: Znajd\u017a zduplikowane wiersze we wszystkich kolumnach<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak znale\u017a\u0107 zduplikowane wiersze we wszystkich kolumnach ramki DataFrame:<\/span><\/p>\n
 #identify duplicate rows\n<\/span>duplicateRows = df[df. duplicated<\/span> ()]\n\n#view duplicate rows\n<\/span>duplicateRows\n\n        team points assists\n1 to 10 5\n7 B 20 6\n<\/span><\/span><\/strong><\/pre>\n
 Istniej\u0105 dwa wiersze, kt\u00f3re s\u0105 dok\u0142adnymi duplikatami innych wierszy w ramce DataFrame.<\/span><\/p>\n
 Zauwa\u017c, \u017ce mo\u017cemy r\u00f3wnie\u017c u\u017cy\u0107 argumentu keep=’last’<\/strong> , aby wy\u015bwietli\u0107 pierwsze zduplikowane linie zamiast ostatniej:<\/span><\/p>\n
 #identify duplicate rows\n<\/span>duplicateRows = df[df. duplicated<\/span> (keep=' last<\/span> ')]\n\n#view duplicate rows\n<\/span>print<\/span> (duplicateRows)\n\n\tteam points assists\n0 to 10 5\n6 B 20 6\n<\/span><\/span><\/strong><\/pre>\n
 Przyk\u0142ad 2: Znajd\u017a zduplikowane wiersze w okre\u015blonych kolumnach<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak znale\u017a\u0107 zduplikowane wiersze tylko w kolumnach \u201ezesp\u00f3\u0142\u201d i \u201epunkty\u201d ramki DataFrame:<\/span><\/p>\n
 #identify duplicate rows across 'team' and 'points' columns\n<\/span>duplicateRows = df[df. duplicated<\/span> ([' team<\/span> ',' points<\/span> '])]\n\n#view duplicate rows\n<\/span>print<\/span> (duplicateRows)\n\n        team points assists\n1 to 10 5\n3 to 12 9\n7 B 20 6\n<\/span><\/span><\/strong><\/pre>\n
 Istniej\u0105 trzy wiersze, w kt\u00f3rych warto\u015bci w kolumnach \u201ezesp\u00f3\u0142\u201d i \u201epunkty\u201d s\u0105 dok\u0142adnymi kopiami poprzednich wierszy.<\/span><\/p>\n
 Przyk\u0142ad 3: Znajd\u017a zduplikowane wiersze w kolumnie<\/strong><\/span><\/h3>\n
 Poni\u017cszy kod pokazuje, jak znale\u017a\u0107 zduplikowane wiersze tylko w kolumnie \u201ezesp\u00f3\u0142\u201d ramki DataFrame:<\/span><\/p>\n
 #identify duplicate rows in 'team' column\n<\/span>duplicateRows = df[df. duplicated<\/span> ([' team<\/span> '])]\n\n#view duplicate rows\n<\/span>print<\/span> (duplicateRows)\n\n\tteam points assists\n1 to 10 5\n2 to 12 7\n3 to 12 9\n5 B 17 9\n6 B 20 6\n7 B 20 6\n<\/span><\/span><\/strong><\/pre>\n
 W sumie jest sze\u015b\u0107 wierszy, w kt\u00f3rych warto\u015bci w kolumnie \u201ezesp\u00f3\u0142\u201d s\u0105 dok\u0142adnymi duplikatami poprzednich wierszy.<\/span><\/p>\n
 Dodatkowe zasoby<\/strong><\/span><\/h3>\n
 Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe operacje na pandach:<\/span><\/p>\n
 Jak usun\u0105\u0107 zduplikowane wiersze w Pandach<\/a>
 Jak usun\u0105\u0107 zduplikowane kolumny w Pandach<\/a>
 Jak wybiera\u0107 kolumny wed\u0142ug indeksu w Pandach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Mo\u017cesz u\u017cy\u0107 funkcji duplikowanej() , aby znale\u017a\u0107 zduplikowane warto\u015bci w ramce DataFrame pandy. Ta funkcja wykorzystuje nast\u0119puj\u0105c\u0105 podstawow\u0105 sk\u0142adni\u0119: #find duplicate rows across all columns duplicateRows = df[df. duplicated ()] #find duplicate rows across specific columns duplicateRows = df[df. duplicated ([’ col1 ’,’ col2 ’])] Poni\u017csze przyk\u0142ady pokazuj\u0105, jak w praktyce u\u017cywa\u0107 tej funkcji z […]<\/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-2520","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"\nJak znale\u017a\u0107 duplikaty w Pandas DataFrame (z przyk\u0142adami) \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 zduplikowane elementy w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\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-znajduja-duplikaty\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak znale\u017a\u0107 duplikaty w Pandas DataFrame (z przyk\u0142adami) \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 zduplikowane elementy w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-21T22:03:56+00:00\" \/>\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-znajduja-duplikaty\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/\",\"name\":\"Jak znale\u017a\u0107 duplikaty w Pandas DataFrame (z przyk\u0142adami) \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-21T22:03:56+00:00\",\"dateModified\":\"2023-07-21T22:03:56+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 zduplikowane elementy w ramce DataFrame pandy, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-znajduja-duplikaty\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak znale\u017a\u0107 duplikaty w ramce danych pandas (z przyk\u0142adami)\"}]},{\"@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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