{"id":4024,"date":"2023-07-14T02:50:00","date_gmt":"2023-07-14T02:50:00","guid":{"rendered":"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/"},"modified":"2023-07-14T02:50:00","modified_gmt":"2023-07-14T02:50:00","slug":"pandas-localizam-multiplas-colunas","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/","title":{"rendered":"Pandas: como usar loc para selecionar m\u00faltiplas colunas"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\"><span style=\"color: #000000;\">Voc\u00ea pode usar a fun\u00e7\u00e3o <strong>loc<\/strong> no pandas para selecionar v\u00e1rias colunas em um DataFrame por r\u00f3tulo.<\/span><\/span><\/p>\n<p> <span style=\"color: #000000;\">Aqui est\u00e3o as maneiras mais comuns de fazer isso:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 1: selecione v\u00e1rias colunas por nome<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">loc<\/span> [:,[' <span style=\"color: #ff0000;\">col2<\/span> ',' <span style=\"color: #ff0000;\">col4<\/span> ']]\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 2: selecione todas as colunas do intervalo<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">loc<\/span> [:, ' <span style=\"color: #ff0000;\">col2<\/span> ':' <span style=\"color: #ff0000;\">col4<\/span> ']<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Os exemplos a seguir mostram como usar cada m\u00e9todo na pr\u00e1tica com o seguinte DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#createDataFrame\n<\/span>df = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">team<\/span> ': ['A', 'A', 'A', 'A', 'B', 'B', 'B', 'B'],\n                   ' <span style=\"color: #ff0000;\">points<\/span> ': [5, 7, 7, 9, 12, 9, 9, 4],\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': [11, 8, 10, 6, 6, 5, 9, 12],\n                   ' <span style=\"color: #ff0000;\">rebounds<\/span> ': [6, 7, 7, 6, 10, 12, 10, 9]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n  team points assists rebounds\n0 A 5 11 6\n1 To 7 8 7\n2 To 7 10 7\n3 to 9 6 6\n4 B 12 6 10\n5 B 9 5 12\n6 B 9 9 10\n7 B 4 12 9\n<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: selecione v\u00e1rias colunas por nome<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>loc<\/strong> para selecionar as colunas &#8220;pontos&#8221; e &#8220;rejei\u00e7\u00f5es&#8221; do DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#select points and rebounds columns\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">loc<\/span> [:,[' <span style=\"color: #ff0000;\">points<\/span> ',' <span style=\"color: #ff0000;\">rebounds<\/span> ']]\n\n        rebound points\n0 5 6\n1 7 7\n2 7 7\n3 9 6\n4 12 10\n5 9 12\n6 9 10\n7 4 9\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que cada linha nas colunas \u201cpontos\u201d e \u201crebotes\u201d \u00e9 retornada.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Observe tamb\u00e9m que a ordem em que voc\u00ea especifica as colunas na fun\u00e7\u00e3o <strong>loc<\/strong> \u00e9 a ordem em que elas ser\u00e3o retornadas.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Por exemplo, poder\u00edamos retornar primeiro a coluna \u201crebotes\u201d e depois a coluna \u201cpontos\u201d:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#select rebounds and points columns\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">loc<\/span> [:, [' <span style=\"color: #ff0000;\">rebounds<\/span> ', ' <span style=\"color: #ff0000;\">points<\/span> ']]\n\n\trebound points\n0 6 5\n1 7 7\n2 7 7\n3 6 9\n4 10 12\n5 12 9\n6 10 9\n7 9 4\n<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: selecione todas as colunas do intervalo<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como usar a fun\u00e7\u00e3o <strong>loc<\/strong> para selecionar todas as colunas entre as colunas &#8220;pontos&#8221; e &#8220;rejei\u00e7\u00f5es&#8221; no DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#select all columns between points and rebounds columns\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">loc<\/span> [:, ' <span style=\"color: #ff0000;\">points<\/span> ': ' <span style=\"color: #ff0000;\">rebounds<\/span> ']\n\n\tpoints assists rebounds\n0 5 11 6\n1 7 8 7\n2 7 10 7\n3 9 6 6\n4 12 6 10\n5 9 5 12\n6 9 9 10\n7 4 12 9\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que todas as colunas entre as colunas &#8220;pontos&#8221; e &#8220;rejei\u00e7\u00f5es&#8221; no DataFrame s\u00e3o retornadas.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Para selecionar colunas por posi\u00e7\u00e3o de \u00edndice, use a fun\u00e7\u00e3o <a href=\"https:\/\/statorials.org\/pt\/pandas-loc-vs-iloc\/\" target=\"_blank\" rel=\"noopener\">iloc<\/a> .<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Os tutoriais a seguir explicam como realizar outras opera\u00e7\u00f5es comuns em pandas:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-condicoes\/\" target=\"_blank\" rel=\"noopener\">Como selecionar linhas com base em m\u00faltiplas condi\u00e7\u00f5es usando Pandas Loc<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-selecionam-linhas-com-base-nos-valores-das-colunas\/\">Como selecionar linhas com base nos valores das colunas no Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-selecionam-linhas-por-indice\/\" target=\"_blank\" rel=\"noopener\">Como selecionar linhas por \u00edndice no Pandas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a fun\u00e7\u00e3o loc no pandas para selecionar v\u00e1rias colunas em um DataFrame por r\u00f3tulo. Aqui est\u00e3o as maneiras mais comuns de fazer isso: M\u00e9todo 1: selecione v\u00e1rias colunas por nome df. loc [:,[&#8216; col2 &#8216;,&#8217; col4 &#8216;]] M\u00e9todo 2: selecione todas as colunas do intervalo df. loc [:, &#8216; col2 &#8216;:&#8217; col4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-4024","post","type-post","status-publish","format-standard","hentry","category-guia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Pandas: Como usar loc para selecionar m\u00faltiplas colunas - Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar loc no pandas para selecionar v\u00e1rias colunas por r\u00f3tulo, incluindo v\u00e1rios exemplos.\" \/>\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\/pt\/pandas-localizam-multiplas-colunas\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandas: Como usar loc para selecionar m\u00faltiplas colunas - Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar loc no pandas para selecionar v\u00e1rias colunas por r\u00f3tulo, incluindo v\u00e1rios exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-14T02:50:00+00:00\" \/>\n<meta name=\"author\" content=\"Dr. benjamim anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Dr. benjamim anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/\",\"url\":\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/\",\"name\":\"Pandas: Como usar loc para selecionar m\u00faltiplas colunas - Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-14T02:50:00+00:00\",\"dateModified\":\"2023-07-14T02:50:00+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar loc no pandas para selecionar v\u00e1rias colunas por r\u00f3tulo, incluindo v\u00e1rios exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/pandas-localizam-multiplas-colunas\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandas: como usar loc para selecionar m\u00faltiplas colunas\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pt\/#website\",\"url\":\"https:\/\/statorials.org\/pt\/\",\"name\":\"Statorials\",\"description\":\"O seu guia para a literacia estat\u00edstica!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pt\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pt-PT\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\",\"name\":\"Dr. benjamim anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-PT\",\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pt\/wp-content\/uploads\/2023\/10\/Dr.-Benjamin-Anderson-96x96.jpg\",\"caption\":\"Dr. benjamim anderson\"},\"description\":\"Ol\u00e1, sou Benjamin, um professor aposentado de estat\u00edstica que se tornou professor dedicado na Statorials. 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