{"id":4233,"date":"2023-07-12T16:05:10","date_gmt":"2023-07-12T16:05:10","guid":{"rendered":"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/"},"modified":"2023-07-12T16:05:10","modified_gmt":"2023-07-12T16:05:10","slug":"pandas-groupby-as_index","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/","title":{"rendered":"Pandas: como usar as_index em groupby"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar o argumento <strong>as_index<\/strong> em uma opera\u00e7\u00e3o pandas <strong>groupby()<\/strong> para especificar se deseja ou n\u00e3o que a coluna agrupada seja usada como \u00edndice da sa\u00edda.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O argumento <strong>as_index<\/strong> pode ser <strong>True<\/strong> ou <strong>False<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">O padr\u00e3o \u00e9 <strong>Verdadeiro<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar o argumento <strong>as_index<\/strong> na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: como usar as_index no pandas groupby<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">Suponha que temos o seguinte DataFrame do pandas que mostra o n\u00famero de pontos marcados por jogadores de basquete de diferentes times:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<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', 'A', 'B', 'B', 'C', 'C', 'C'],\n                   ' <span style=\"color: #ff0000;\">points<\/span> ': [12, 15, 17, 17, 19, 14, 15, 20, 24, 28]})\n                            \n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n  team points\n0 to 12\n1 to 15\n2 to 17\n3 to 17\n4 to 19\n5 B 14\n6 B 15\n7 C 20\n8 C 24\n9 C 28<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Podemos usar a seguinte sintaxe para agrupar linhas por coluna <strong>de equipe<\/strong> e calcular a soma da coluna de <strong>pontos<\/strong> , enquanto especificamos <strong>as_index=True<\/strong> para usar <strong>equipe<\/strong> como \u00edndice de sa\u00edda:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#group rows by team and calculate sum of points\n<span style=\"color: #000000;\"><span style=\"color: #008000;\">print<\/span> ( <span style=\"color: #3366ff;\">df.groupby<\/span> (' <span style=\"color: #ff0000;\">team<\/span> ', as_index= <span style=\"color: #008000;\">True<\/span> ) <span style=\"color: #3366ff;\">.sum<\/span> ())\n<\/span>\n<span style=\"color: #000000;\">points\nteam        \nAt 80\nB29\nC 72<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">A sa\u00edda exibe a soma dos valores da coluna <strong>de pontos<\/strong> , agrupados pelos valores da coluna da <strong>equipe<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">Observe que a coluna <strong>team<\/strong> \u00e9 usada como \u00edndice da sa\u00edda.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Se, em vez disso, especificarmos <strong>as_index=False<\/strong> , a coluna da <strong>equipe<\/strong> n\u00e3o ser\u00e1 usada como \u00edndice de sa\u00edda:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#group rows by team and calculate sum of points\n<span style=\"color: #000000;\"><span style=\"color: #008000;\">print<\/span> ( <span style=\"color: #3366ff;\">df.groupby<\/span> (' <span style=\"color: #ff0000;\">team<\/span> ', as_index= <span style=\"color: #008000;\">False<\/span> ) <span style=\"color: #3366ff;\">.sum<\/span> ())\n\n  team points\n0 to 80\n1 B 29\n2 C 72\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que <strong>team<\/strong> agora \u00e9 usado como uma coluna na sa\u00edda e a coluna do \u00edndice \u00e9 simplesmente numerada de 0 a 2.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Voc\u00ea pode encontrar a documenta\u00e7\u00e3o completa da opera\u00e7\u00e3o <strong>groupby()<\/strong> do pandas <a href=\"https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.DataFrame.groupby.html\" target=\"_blank\" rel=\"noopener\">aqui<\/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-groupby-obter-grupo\/\" target=\"_blank\" rel=\"noopener\">Como obter um grupo depois de usar o Pandas Groupby<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-groupby-para-dataframe\/\" target=\"_blank\" rel=\"noopener\">Como converter a sa\u00edda GroupBy do Pandas para DataFrame<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-groupby-aplicar\/\" target=\"_blank\" rel=\"noopener\">Como aplicar uma fun\u00e7\u00e3o ao Pandas Groupby<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar o argumento as_index em uma opera\u00e7\u00e3o pandas groupby() para especificar se deseja ou n\u00e3o que a coluna agrupada seja usada como \u00edndice da sa\u00edda. O argumento as_index pode ser True ou False . O padr\u00e3o \u00e9 Verdadeiro . O exemplo a seguir mostra como usar o argumento as_index na pr\u00e1tica. Exemplo: como [&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-4233","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 as_index em groupby \u2013 Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como usar o argumento as_index em groupby() em pandas, incluindo 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-groupby-as_index\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandas: Como usar as_index em groupby \u2013 Estatologia\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como usar o argumento as_index em groupby() em pandas, incluindo exemplos.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-12T16:05:10+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-groupby-as_index\/\",\"url\":\"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/\",\"name\":\"Pandas: Como usar as_index em groupby \u2013 Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-12T16:05:10+00:00\",\"dateModified\":\"2023-07-12T16:05:10+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como usar o argumento as_index em groupby() em pandas, incluindo exemplos.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/pandas-groupby-as_index\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandas: como usar as_index em groupby\"}]},{\"@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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