{"id":1363,"date":"2023-07-26T16:51:03","date_gmt":"2023-07-26T16:51:03","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/"},"modified":"2023-07-26T16:51:03","modified_gmt":"2023-07-26T16:51:03","slug":"pandy-unikalne-wartosci-w-kolumnie","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/","title":{"rendered":"Pandy: jak znale\u017a\u0107 unikalne warto\u015bci w kolumnie"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Naj\u0142atwiejszym sposobem uzyskania listy unikalnych warto\u015bci w kolumnie Pandas DataFrame jest u\u017cycie funkcji <a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.Series.unique.html\" target=\"_blank\" rel=\"noopener\">Unique()<\/a> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w u\u017cycia tej funkcji z nast\u0119puj\u0105c\u0105 ramk\u0105 DataFrame pand:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #107d3f;\">import<\/span> pandas <span style=\"color: #107d3f;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #008000;\">team<\/span> ': ['A', 'A', 'A', 'B', 'B', 'C'],\n                   ' <span style=\"color: #008000;\">conference<\/span> ': ['East', 'East', 'East', 'West', 'West', 'East'],\n                   ' <span style=\"color: #008000;\">points<\/span> ': [11, 8, 10, 6, 6, 5]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        team conference points\n0 A East 11\n1 A East 8\n2 A East 10\n3 B West 6\n4 B West 6\n5 C East 5<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Znajd\u017a unikalne warto\u015bci w kolumnie<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak znale\u017a\u0107 unikalne warto\u015bci w pojedynczej kolumnie DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">team<\/span> . <span style=\"color: #3366ff;\">single<\/span> ()\n\narray(['A', 'B', 'C'], dtype=object)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Widzimy, \u017ce unikalne warto\u015bci w kolumnie zespo\u0142u obejmuj\u0105 \u201eA\u201d, \u201eB\u201d i \u201eC\u201d.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Znajd\u017a unikalne warto\u015bci we wszystkich kolumnach<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak znale\u017a\u0107 unikalne warto\u015bci we wszystkich kolumnach DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">for<\/span> col <span style=\"color: #008000;\">in<\/span> df:\n  <span style=\"color: #008000;\">print<\/span> (df[col] <span style=\"color: #3366ff;\">.unique<\/span> ())\n\n['A' 'B' 'C']\n['East' 'West']\n[11 8 10 6 5]\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Znajd\u017a i posortuj unikalne warto\u015bci w kolumnie<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje jak wyszukiwa\u0107 i sortowa\u0107 wed\u0142ug unikalnych warto\u015bci w pojedynczej kolumnie DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#find unique points values<\/span>\npoints = df. <span style=\"color: #3366ff;\">points<\/span> . <span style=\"color: #3366ff;\">single<\/span> ()\n\n<span style=\"color: #008080;\">#sort values smallest to largest<\/span>\npoints. <span style=\"color: #3366ff;\">sort<\/span> ()\n\n<span style=\"color: #008080;\">#display sorted values<\/span>\npoints\n\narray([ 5, 6, 8, 10, 11])\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Znajd\u017a i zlicz unikalne warto\u015bci w kolumnie<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak znale\u017a\u0107 i policzy\u0107 wyst\u0119powanie unikalnych warto\u015bci w pojedynczej kolumnie DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">team<\/span> . <span style=\"color: #3366ff;\">value_counts<\/span> ()\n\nAt 3\nB2\nC 1\nName: team, dtype: int64\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pl\/pandy-pojedyncze-linie\/\" target=\"_blank\" rel=\"noopener\">Jak wybra\u0107 pojedyncze wiersze w ramce danych Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pojedyncze-pandy,-wiele-kolumn\/\" target=\"_blank\" rel=\"noopener\">Jak znale\u017a\u0107 unikalne warto\u015bci w wielu kolumnach w Pandach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Naj\u0142atwiejszym sposobem uzyskania listy unikalnych warto\u015bci w kolumnie Pandas DataFrame jest u\u017cycie funkcji Unique() . W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w u\u017cycia tej funkcji z nast\u0119puj\u0105c\u0105 ramk\u0105 DataFrame pand: import pandas as pd #createDataFrame df = pd. DataFrame ({&#8217; team &#8217;: [&#8217;A&#8217;, 'A&#8217;, 'A&#8217;, 'B&#8217;, 'B&#8217;, 'C&#8217;], &#8217; conference &#8217;: [&#8217;East&#8217;, 'East&#8217;, 'East&#8217;, 'West&#8217;, 'West&#8217;, [&hellip;]<\/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-1363","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pandy: Jak znale\u017a\u0107 unikalne warto\u015bci w kolumnie \u2013 Statologia<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 wszystkie unikalne warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame w Pythonie.\" \/>\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-unikalne-wartosci-w-kolumnie\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandy: Jak znale\u017a\u0107 unikalne warto\u015bci w kolumnie \u2013 Statologia\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 wszystkie unikalne warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame w Pythonie.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-26T16:51:03+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=\"1 minuta\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/\",\"name\":\"Pandy: Jak znale\u017a\u0107 unikalne warto\u015bci w kolumnie \u2013 Statologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-26T16:51:03+00:00\",\"dateModified\":\"2023-07-26T16:51:03+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak znale\u017a\u0107 wszystkie unikalne warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame w Pythonie.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-unikalne-wartosci-w-kolumnie\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandy: jak znale\u017a\u0107 unikalne warto\u015bci w kolumnie\"}]},{\"@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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