{"id":909,"date":"2023-07-28T08:30:34","date_gmt":"2023-07-28T08:30:34","guid":{"rendered":"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/"},"modified":"2023-07-28T08:30:34","modified_gmt":"2023-07-28T08:30:34","slug":"crie-pandas-com-base-em-colunas","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/","title":{"rendered":"Como criar uma nova coluna baseada em uma condi\u00e7\u00e3o no pandas"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Freq\u00fcentemente, voc\u00ea pode querer criar uma nova coluna em um DataFrame do pandas com base em certas condi\u00e7\u00f5es.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Este tutorial fornece v\u00e1rios exemplos de como fazer isso usando o seguinte 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<span style=\"color: #107d3f;\">import<\/span> numpy <span style=\"color: #107d3f;\">as<\/span> np\n\n<span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({'rating': [90, 85, 82, 88, 94, 90, 76, 75, 87, 86],\n                   'points': [25, 20, 14, 16, 27, 20, 12, 15, 14, 19],\n                   'assists': [5, 7, 7, 8, 5, 7, 6, 9, 9, 5],\n                   'rebounds': [11, 8, 10, 6, 6, 9, 6, 10, 10, 7]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<span style=\"color: #000000;\">df\n<\/span>\n<\/span>rating points assists rebounds\n0 90 25 5 11\n1 85 20 7 8\n2 82 14 7 10\n3 88 16 8 6\n4 94 27 5 6\n5 90 20 7 9\n6 76 12 6 6\n7 75 15 9 10\n8 87 14 9 10\n9 86 19 5 7\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 1: Crie uma nova coluna com valores bin\u00e1rios<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar uma nova coluna chamada \u201cBoa\u201d onde o valor \u00e9 \u201csim\u201d se os pontos em uma determinada linha forem maiores que 20 e \u201cn\u00e3o\u201d caso contr\u00e1rio:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column titled 'Good'<\/span>\ndf['Good'] = np. <span style=\"color: #3366ff;\">where<\/span> (df['points']&gt;20, ' <span style=\"color: #008000;\">yes<\/span> ', ' <span style=\"color: #008000;\">no<\/span> ')\n\n<span style=\"color: #008080;\">#view DataFrame<\/span> \ndf\n\n        rating points assists rebounds Good\n0 90 25 5 11 yes\n1 85 20 7 8 no\n2 82 14 7 10 no\n3 88 16 8 6 no\n4 94 27 5 6 yes\n5 90 20 7 9 no\n6 76 12 6 6 no\n7 75 15 9 10 no\n8 87 14 9 10 no\n9 86 19 5 7 no\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 2: Crie uma nova coluna com v\u00e1rios valores<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar uma nova coluna chamada \u201cBom\u201d onde o valor \u00e9:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u201cSim\u201d se pontos \u2265 25<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cTalvez\u201d se 15 \u2264 pontos &lt; 25<\/span><\/li>\n<li> <span style=\"color: #000000;\">\u201cN\u00e3o\u201d se pontos &lt; 15<\/span><\/li>\n<\/ul>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define function for classifying players based on points<\/span>\n<span style=\"color: #008000;\">def<\/span> f(row):\n    <span style=\"color: #008000;\">if<\/span> row['points'] &lt; 15:\n        val = 'no'\n    <span style=\"color: #008000;\">elif<\/span> row['points'] &lt; 25:\n        val = 'maybe'\n    <span style=\"color: #008000;\">else<\/span> :\n        val = 'yes'\n    <span style=\"color: #008000;\">return<\/span> val\n\n<span style=\"color: #008080;\">#create new column 'Good' using the function above<\/span>\ndf['Good'] = df. <span style=\"color: #3366ff;\">apply<\/span> (f, axis=1)\n\n<span style=\"color: #008080;\">#view DataFrame<\/span> \ndf\n\n        rating points assists rebounds Good\n0 90 25 5 11 yes\n1 85 20 7 8 maybe\n2 82 14 7 10 no\n3 88 16 8 6 maybe\n4 94 27 5 6 yes\n5 90 20 7 9 maybe\n6 76 12 6 6 no\n7 75 15 9 10 maybe\n8 87 14 9 10 no\n9 86 19 5 7 maybe\n<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo 3: Crie uma nova coluna com base em uma compara\u00e7\u00e3o com uma coluna existente<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">O c\u00f3digo a seguir mostra como criar uma nova coluna chamada \u201cassist_more\u201d onde o valor \u00e9:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">\u201cSim\u201d se assist\u00eancias &gt; rebotes.<\/span><\/li>\n<li> <span style=\"color: #000000;\">&#8216;N\u00e3o&#8217; caso contr\u00e1rio.<\/span><\/li>\n<\/ul>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#create new column titled 'assist_more'<\/span>\n<span style=\"color: #000000;\">df['assist_more']<\/span> = np. <span style=\"color: #3366ff;\">where<\/span> (df['assists']&gt;df['rebounds'], ' <span style=\"color: #008000;\">yes<\/span> ', ' <span style=\"color: #008000;\">no<\/span> ')\n\n<span style=\"color: #008080;\">#view DataFrame<\/span> \ndf\n\n        rating points assists rebounds assist_more\n0 90 25 5 11 no\n1 85 20 7 8 no\n2 82 14 7 10 no\n3 88 16 8 6 yes\n4 94 27 5 6 no\n5 90 20 7 9 no\n6 76 12 6 6 no\n7 75 15 9 10 no\n8 87 14 9 10 no\n9 86 19 5 7 no<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><em><span style=\"color: #000000;\">Voc\u00ea pode encontrar mais tutoriais de Python <a href=\"https:\/\/statorials.org\/pt\/estatologia-explica-conceitos-de-forma-simples-e-direta-facilitamos-o-aprendizado-de-estatistica\/\" target=\"_blank\" rel=\"noopener\">aqui<\/a> .<\/span><\/em><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Freq\u00fcentemente, voc\u00ea pode querer criar uma nova coluna em um DataFrame do pandas com base em certas condi\u00e7\u00f5es. Este tutorial fornece v\u00e1rios exemplos de como fazer isso usando o seguinte DataFrame: import pandas as pd import numpy as np #createDataFrame df = pd. DataFrame ({&#8216;rating&#8217;: [90, 85, 82, 88, 94, 90, 76, 75, 87, 86], [&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-909","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>Como criar uma nova coluna baseada em uma condi\u00e7\u00e3o no Pandas<\/title>\n<meta name=\"description\" content=\"Uma explica\u00e7\u00e3o simples sobre como criar uma nova coluna em um DataFrame do pandas com base em certas condi\u00e7\u00f5es.\" \/>\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\/crie-pandas-com-base-em-colunas\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como criar uma nova coluna baseada em uma condi\u00e7\u00e3o no Pandas\" \/>\n<meta property=\"og:description\" content=\"Uma explica\u00e7\u00e3o simples sobre como criar uma nova coluna em um DataFrame do pandas com base em certas condi\u00e7\u00f5es.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-28T08:30:34+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\/crie-pandas-com-base-em-colunas\/\",\"url\":\"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/\",\"name\":\"Como criar uma nova coluna baseada em uma condi\u00e7\u00e3o no Pandas\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-28T08:30:34+00:00\",\"dateModified\":\"2023-07-28T08:30:34+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Uma explica\u00e7\u00e3o simples sobre como criar uma nova coluna em um DataFrame do pandas com base em certas condi\u00e7\u00f5es.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/crie-pandas-com-base-em-colunas\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como criar uma nova coluna baseada em uma condi\u00e7\u00e3o no pandas\"}]},{\"@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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