{"id":2920,"date":"2023-07-20T02:21:24","date_gmt":"2023-07-20T02:21:24","guid":{"rendered":"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/"},"modified":"2023-07-20T02:21:24","modified_gmt":"2023-07-20T02:21:24","slug":"pandas-groupby-concatena-strings","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/","title":{"rendered":"Pandas: como concatenar strings usando groupby"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para concatenar strings de GroupBy em pandas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df. <span style=\"color: #3366ff;\">groupby<\/span> ([' <span style=\"color: #ff0000;\">group_var<\/span> '], as_index= <span style=\"color: #008000;\">False<\/span> ). <span style=\"color: #3366ff;\">agg<\/span> ({' <span style=\"color: #ff0000;\">string_var<\/span> ': ' ' <span style=\"color: #3366ff;\">.join<\/span> })\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Esta f\u00f3rmula espec\u00edfica agrupa as linhas pela coluna <strong>group_var<\/strong> e concatena as strings na coluna <strong>string_var<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar essa sintaxe na pr\u00e1tica.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo: como concatenar strings usando GroupBy<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Suponha que temos o seguinte DataFrame do pandas:<\/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<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">store<\/span> ': ['A', 'A', 'A', 'A', 'B', 'B', 'B', 'B'],\n                   ' <span style=\"color: #ff0000;\">quarter<\/span> ': [1, 1, 2, 2, 1, 1, 2, 2],\n                   ' <span style=\"color: #ff0000;\">employee<\/span> ': ['Andy', 'Bob', 'Chad', 'Diane',\n                                'Elana', 'Frank', 'George', 'Hank']})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Podemos usar a seguinte sintaxe para agrupar as linhas do DataFrame por <strong>loja<\/strong> e <strong>trimestre<\/strong> e depois concatenar as strings na coluna <strong>do funcion\u00e1rio<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#group by store and quarter, then concatenate employee strings\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">groupby<\/span> ([' <span style=\"color: #ff0000;\">store<\/span> ', ' <span style=\"color: #ff0000;\">quarter<\/span> '], as_index= <span style=\"color: #008000;\">False<\/span> ). <span style=\"color: #3366ff;\">agg<\/span> ({' <span style=\"color: #ff0000;\">employee<\/span> ':''. <span style=\"color: #3366ff;\">join<\/span> })\n\n\tstore quarter employee\n0 To 1 Andy Bob\n1 A 2 Chad Diane\n2 B 1 Elana Frank\n3 B 2 George Hank<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O resultado \u00e9 um DataFrame agrupado por <strong>loja<\/strong> e <strong>trimestre<\/strong> com as strings da coluna <strong>do funcion\u00e1rio<\/strong> concatenadas com um espa\u00e7o.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Tamb\u00e9m poder\u00edamos concatenar as strings usando um separador diferente, como o s\u00edmbolo <strong>&amp;<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#group by store and quarter, then concatenate employee strings\n<span style=\"color: #000000;\">df. <span style=\"color: #3366ff;\">groupby<\/span> ([' <span style=\"color: #ff0000;\">store<\/span> ', ' <span style=\"color: #ff0000;\">quarter<\/span> '], as_index= <span style=\"color: #008000;\">False<\/span> ). <span style=\"color: #3366ff;\">agg<\/span> ({' <span style=\"color: #ff0000;\">employee<\/span> ':' <span style=\"color: #ff0000;\">&amp;<\/span> '. <span style=\"color: #3366ff;\">join<\/span> })\n\n\tstore quarter employee\n0 To 1 Andy &amp; Bob\n1 A 2 Chad &amp; Diane\n2 B 1 Elana &amp; Frank\n3 B 2 George &amp; Hank<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Observe que as strings na coluna funcion\u00e1rio agora est\u00e3o separadas pelo s\u00edmbolo <strong>&amp;<\/strong> .<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Voc\u00ea pode encontrar a documenta\u00e7\u00e3o completa da opera\u00e7\u00e3o GroupBy no pandas <a href=\"https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.DataFrame.groupby.html\" target=\"_blank\" rel=\"noopener\">aqui<\/a> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h3>\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\/soma-cumulativa-de-pandas-por-grupo\/\" target=\"_blank\" rel=\"noopener\">Pandas: como calcular a soma acumulada por grupo<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/contagem-de-grupo-de-pandas-unica\/\" target=\"_blank\" rel=\"noopener\">Pandas: como contar valores \u00fanicos por grupo<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/correlacao-de-agrupamento-de-pandas\/\" target=\"_blank\" rel=\"noopener\">Pandas: como calcular a correla\u00e7\u00e3o por grupo<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a seguinte sintaxe b\u00e1sica para concatenar strings de GroupBy em pandas: df. groupby ([&#8216; group_var &#8216;], as_index= False ). agg ({&#8216; string_var &#8216;: &#8216; &#8216; .join }) Esta f\u00f3rmula espec\u00edfica agrupa as linhas pela coluna group_var e concatena as strings na coluna string_var . O exemplo a seguir mostra como usar essa [&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-2920","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 concatenar strings usando GroupBy - Statorials<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como concatenar strings em um DataFrame do pandas a partir de um GroupBy.\" \/>\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-concatena-strings\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Pandas: Como concatenar strings usando GroupBy - Statorials\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como concatenar strings em um DataFrame do pandas a partir de um GroupBy.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-20T02:21:24+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-concatena-strings\/\",\"url\":\"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/\",\"name\":\"Pandas: Como concatenar strings usando GroupBy - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-20T02:21:24+00:00\",\"dateModified\":\"2023-07-20T02:21:24+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como concatenar strings em um DataFrame do pandas a partir de um GroupBy.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/pandas-groupby-concatena-strings\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pandas: como concatenar strings usando 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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