{"id":1262,"date":"2023-07-27T02:23:26","date_gmt":"2023-07-27T02:23:26","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/"},"modified":"2023-07-27T02:23:26","modified_gmt":"2023-07-27T02:23:26","slug":"pandy-zastepuja-wartosci","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/","title":{"rendered":"Jak zamieni\u0107 warto\u015bci w ramce danych pandas (z przyk\u0142adami)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Cz\u0119sto mo\u017cesz chcie\u0107 zamieni\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Na szcz\u0119\u015bcie mo\u017cna to \u0142atwo zrobi\u0107 za pomoc\u0105 funkcji <a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.DataFrame.replace.html\" target=\"_blank\" rel=\"noopener noreferrer\">.replace()<\/a> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w praktycznego wykorzystania tej funkcji w nast\u0119puj\u0105cej ramce DataFrame:<\/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> ({'team': ['A', 'A', 'B', 'B', 'B', 'C', 'C'],\n                   'division':['E', 'W', 'E', 'E', 'W', 'W', 'E'],\n                   'rebounds': [11, 8, 7, 6, 6, 5, 12]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #993300;\">print<\/span> (df)\n\n  team division rebounds\n0 AE 11\n1 AW 8\n2 BE 7\n3 BE 6\n4 BW 6\n5 CW 5\n6 CE 12<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: Zamie\u0144 pojedyncz\u0105 warto\u015b\u0107 w ca\u0142ej ramce danych<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zamieni\u0107 pojedyncz\u0105 warto\u015b\u0107 w ca\u0142ej ramce DataFrame pandy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace 'E' with 'East'<\/span>\ndf = df. <span style=\"color: #3366ff;\">replace<\/span> ([' <span style=\"color: #008000;\">E<\/span> '],' <span style=\"color: #008000;\">East<\/span> ')\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #993300;\">print<\/span> (df)\n\n  team division rebounds\n0 A East 11\n1 AW 8\n2 B East 7\n3 B East 6\n4 BW 6\n5 CW 5\n6 C East 12<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2: Zamie\u0144 wiele warto\u015bci w ca\u0142ej ramce DataFrame<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zast\u0105pi\u0107 wiele warto\u015bci w ca\u0142ej ramce DataFrame pandy:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace 'E' with 'East' and 'W' with 'West'<\/span>\ndf = df. <span style=\"color: #3366ff;\">replace<\/span> ([' <span style=\"color: #008000;\">E<\/span> ',' <span style=\"color: #008000;\">W<\/span> '],[' <span style=\"color: #008000;\">East<\/span> ',' <span style=\"color: #008000;\">West<\/span> '])\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #993300;\">print<\/span> (df)\n\n        team division rebounds\n0 A East 11\n1 A West 8\n2 B East 7\n3 B East 6\n4 B West 6\n5 C West 5\n6 C East 12\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 3: Zast\u0105p pojedyncz\u0105 warto\u015b\u0107 w pojedynczej kolumnie<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zast\u0105pi\u0107 pojedyncz\u0105 warto\u015b\u0107 w pojedynczej kolumnie:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace 6 with 0 in <em>rebounds<\/em> column<\/span>\ndf[' <span style=\"color: #008000;\">rebounds<\/span> '] = df[' <span style=\"color: #008000;\">rebounds<\/span> ']. <span style=\"color: #3366ff;\">replace<\/span> (6, 0)\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #993300;\">print<\/span> (df)\n\n        team division rebounds\n0 A E 11\n1 A W 8\n2 B E 7\n3 B E 0\n4 B W 0\n5 C W 5\n6 C E 12\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 4: Zamie\u0144 wiele warto\u015bci w jednej kolumnie<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak zast\u0105pi\u0107 wiele warto\u015bci w jednej kolumnie:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#replace 6, 11, and 8 with 0, 1 and 2 in <em>rebounds<\/em> column<\/span>\ndf[' <span style=\"color: #008000;\">rebounds<\/span> '] = df[' <span style=\"color: #008000;\">rebounds<\/span> ']. <span style=\"color: #3366ff;\">replace<\/span> ([6, 11, 8], [0, 1, 2])\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #993300;\">print<\/span> (df)\n\nteam division rebounds\n0 A E 1\n1 A W 2\n2 B E 7\n3 B E 0\n4 B W 0\n5 C W 5\n6 C E 12\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak wykonywa\u0107 inne typowe zadania w pandach:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\" target=\"_blank\" rel=\"noopener noreferrer\">Jak zamieni\u0107 warto\u015bci NaN na zera w Pandach<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandy-zamien-pusty-ciag-nan\/\" target=\"_blank\" rel=\"noopener\">Jak zamieni\u0107 puste ci\u0105gi na NaN w Pandach<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci-w-kolumnie-na-podstawie-stanu\/\" target=\"_blank\" rel=\"noopener\">Jak zamieni\u0107 warto\u015bci w kolumnie na podstawie warunku w Pandach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cz\u0119sto mo\u017cesz chcie\u0107 zamieni\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame. Na szcz\u0119\u015bcie mo\u017cna to \u0142atwo zrobi\u0107 za pomoc\u0105 funkcji .replace() . W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w praktycznego wykorzystania tej funkcji w nast\u0119puj\u0105cej ramce DataFrame: import pandas as pd #createDataFrame df = pd. DataFrame ({&#8217;team&#8217;: [&#8217;A&#8217;, 'A&#8217;, 'B&#8217;, 'B&#8217;, 'B&#8217;, 'C&#8217;, 'C&#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-1262","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>Jak zamieni\u0107 warto\u015bci w ramce danych Pandas (z przyk\u0142adami)<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame, \u0142\u0105cznie z przyk\u0142adami.\" \/>\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-zastepuja-wartosci\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak zamieni\u0107 warto\u015bci w ramce danych Pandas (z przyk\u0142adami)\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame, \u0142\u0105cznie z przyk\u0142adami.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-27T02:23:26+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-zastepuja-wartosci\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/\",\"name\":\"Jak zamieni\u0107 warto\u015bci w ramce danych Pandas (z przyk\u0142adami)\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-27T02:23:26+00:00\",\"dateModified\":\"2023-07-27T02:23:26+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame, \u0142\u0105cznie z przyk\u0142adami.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak zamieni\u0107 warto\u015bci 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. Dzi\u0119ki bogatemu do\u015bwiadczeniu i wiedzy specjalistycznej w dziedzinie statystyki ch\u0119tnie dziel\u0119 si\u0119 swoj\u0105 wiedz\u0105, aby wzmocni\u0107 pozycj\u0119 uczni\u00f3w za po\u015brednictwem Statorials. Wiedzie\u0107 wi\u0119cej\",\"sameAs\":[\"https:\/\/statorials.org\/pl\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Jak zamieni\u0107 warto\u015bci w ramce danych Pandas (z przyk\u0142adami)","description":"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame, \u0142\u0105cznie z przyk\u0142adami.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/","og_locale":"pl_PL","og_type":"article","og_title":"Jak zamieni\u0107 warto\u015bci w ramce danych Pandas (z przyk\u0142adami)","og_description":"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame, \u0142\u0105cznie z przyk\u0142adami.","og_url":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/","og_site_name":"Statorials","article_published_time":"2023-07-27T02:23:26+00:00","author":"Benjamin Anderson","twitter_card":"summary_large_image","twitter_misc":{"Napisane przez":"Benjamin Anderson","Szacowany czas czytania":"2 minuty"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/","url":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/","name":"Jak zamieni\u0107 warto\u015bci w ramce danych Pandas (z przyk\u0142adami)","isPartOf":{"@id":"https:\/\/statorials.org\/pl\/#website"},"datePublished":"2023-07-27T02:23:26+00:00","dateModified":"2023-07-27T02:23:26+00:00","author":{"@id":"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965"},"description":"W tym samouczku wyja\u015bniono, jak zast\u0105pi\u0107 warto\u015bci w jednej lub wi\u0119kszej liczbie kolumn pandy DataFrame, \u0142\u0105cznie z przyk\u0142adami.","breadcrumb":{"@id":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/#breadcrumb"},"inLanguage":"pl-PL","potentialAction":[{"@type":"ReadAction","target":["https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/statorials.org\/pl\/pandy-zastepuja-wartosci\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Dom","item":"https:\/\/statorials.org\/pl\/"},{"@type":"ListItem","position":2,"name":"Jak zamieni\u0107 warto\u015bci 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. Dzi\u0119ki bogatemu do\u015bwiadczeniu i wiedzy specjalistycznej w dziedzinie statystyki ch\u0119tnie dziel\u0119 si\u0119 swoj\u0105 wiedz\u0105, aby wzmocni\u0107 pozycj\u0119 uczni\u00f3w za po\u015brednictwem Statorials. Wiedzie\u0107 wi\u0119cej","sameAs":["https:\/\/statorials.org\/pl"]}]}},"yoast_meta":{"yoast_wpseo_title":"","yoast_wpseo_metadesc":"","yoast_wpseo_canonical":""},"_links":{"self":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts\/1262","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/comments?post=1262"}],"version-history":[{"count":0,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/posts\/1262\/revisions"}],"wp:attachment":[{"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/media?parent=1262"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/categories?post=1262"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/statorials.org\/pl\/wp-json\/wp\/v2\/tags?post=1262"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}