{"id":896,"date":"2023-07-28T09:32:44","date_gmt":"2023-07-28T09:32:44","guid":{"rendered":"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/"},"modified":"2023-07-28T09:32:44","modified_gmt":"2023-07-28T09:32:44","slug":"converter-uma-string-em-pandas-flutuantes","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/","title":{"rendered":"Como converter strings para flutuar no pandas"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar os seguintes m\u00e9todos para converter uma string em flutuante no pandas:<\/span><\/p>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 1: converter coluna \u00fanica em flutuante<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert \"assists\" column from string to float<\/span>\ndf[' <span style=\"color: #ff0000;\">assists<\/span> '] = df[' <span style=\"color: #ff0000;\">assists<\/span> ']. <span style=\"color: #3366ff;\">astype<\/span> (float)\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 2: converter v\u00e1rias colunas em flutuantes<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert both \"assists\" and \"rebounds\" from strings to floats\n<\/span>df[[' <span style=\"color: #ff0000;\">assists<\/span> ', ' <span style=\"color: #ff0000;\">rebounds<\/span> ']] = df[[' <span style=\"color: #ff0000;\">assists<\/span> ', ' <span style=\"color: #ff0000;\">rebounds<\/span> ']]. <span style=\"color: #3366ff;\">astype<\/span> (float)<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>M\u00e9todo 3: converter todas as colunas em flutuantes<\/strong><\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert all columns to float\n<\/span>df = df. <span style=\"color: #3366ff;\">astype<\/span> (float)<\/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: #107d3f;\">import<\/span> numpy <span style=\"color: #107d3f;\">as<\/span> np\n<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> ({' <span style=\"color: #ff0000;\">points<\/span> ': [np.nan, 12, 15, 14, 19],\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': ['5', np.nan, '7', '9', '12'],\n                   ' <span style=\"color: #ff0000;\">rebounds<\/span> ': ['11', '8', '10', '6', '6']})  \n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n \tpoints assists rebounds\n0 NaN 5.0 11\n1 12.0 NaN 8\n2 15.0 7.0 10\n3 14.0 9.0 6\n4 19.0 12.0 6\n\n<span style=\"color: #008080;\">#view column data types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes\n\n<span style=\"color: #000000;\">float64 points\nassists object\nrebound object\ndtype:object<\/span><\/span><\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 1: Converter uma \u00fanica coluna em flutuante<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">A sintaxe a seguir mostra como converter a coluna <strong>auxiliar<\/strong> de uma string em um float:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert \"assists\" from string to float<\/span>\ndf[' <span style=\"color: #ff0000;\">assists<\/span> '] = df[' <span style=\"color: #ff0000;\">assists<\/span> ']. <span style=\"color: #3366ff;\">astype<\/span> (float)\n\n<span style=\"color: #008080;\">#view column data types<\/span>\ndf. <span style=\"color: #3366ff;\">dtypes<\/span>\n\nfloat64 points\nassist float64\nrebound object\ndtype:object\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 2: Converter m\u00faltiplas colunas em flutuantes<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">A sintaxe a seguir mostra como converter colunas <strong>auxiliares<\/strong> e <strong>de rejei\u00e7\u00e3o<\/strong> de strings em flutuantes:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert both \"assists\" and \"rebounds\" from strings to floats\n<\/span>df[[' <span style=\"color: #ff0000;\">assists<\/span> ', ' <span style=\"color: #ff0000;\">rebounds<\/span> ']] = df[[' <span style=\"color: #ff0000;\">assists<\/span> ', ' <span style=\"color: #ff0000;\">rebounds<\/span> ']]. <span style=\"color: #3366ff;\">astype<\/span> (float)\n\n<span style=\"color: #008080;\">#view column data types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes\n\n<\/span>float64 points\nassist float64\nrebounds float64\ndtype:object\n<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo 3: Converter todas as colunas em flutuantes<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">A sintaxe a seguir mostra como converter todas as colunas do DataFrame em flutuantes:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert all columns to float\n<\/span>df = df. <span style=\"color: #3366ff;\">astype<\/span> (float)\n\n<span style=\"color: #008080;\">#view column data types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes\n\n<\/span>float64 points\nassist float64\nrebounds float64\ndtype:object<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>B\u00f4nus: converta string em valores float e pad NaN<\/strong><\/span><\/h2>\n<p> <span style=\"color: #000000;\">A sintaxe a seguir mostra como converter a coluna <strong>auxiliar<\/strong> de string em flutuante e preencher simultaneamente os valores NaN com zeros:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert \"assists\" from string to float and fill in NaN values with zeros\n<\/span>df[' <span style=\"color: #ff0000;\">assists<\/span> '] = df[' <span style=\"color: #ff0000;\">assists<\/span> ']. <span style=\"color: #3366ff;\">astype<\/span> (float). <span style=\"color: #3366ff;\">fillna<\/span> (0)\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #000000;\">df\n<\/span>\n        points assists rebounds\n0 NaN 5.0 11\n1 12.0 0.0 8\n2 15.0 7.0 10\n3 14.0 9.0 6\n4 19.0 12.0 6<\/strong><\/pre>\n<h2> <span style=\"color: #000000;\"><strong>Recursos adicionais<\/strong><\/span><\/h2>\n<p> Os tutoriais a seguir explicam como realizar outras tarefas comuns em pandas:<\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/pandas-converte-objeto-em-int\/\" target=\"_blank\" rel=\"noopener\">Pandas: Como converter um objeto em inteiro<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-convertem-float-em-int\/\" target=\"_blank\" rel=\"noopener\">Pandas: como converter floats em inteiros<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/coluna-pandas-para-array-numpy\/\" target=\"_blank\" rel=\"noopener\">Pandas: Como converter colunas espec\u00edficas em array NumPy<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar os seguintes m\u00e9todos para converter uma string em flutuante no pandas: M\u00e9todo 1: converter coluna \u00fanica em flutuante #convert &#8220;assists&#8221; column from string to float df[&#8216; assists &#8216;] = df[&#8216; assists &#8216;]. astype (float) M\u00e9todo 2: converter v\u00e1rias colunas em flutuantes #convert both &#8220;assists&#8221; and &#8220;rebounds&#8221; from strings to floats df[[&#8216; assists [&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-896","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 converter strings em carros aleg\u00f3ricos no Pandas \u2013 Estatologia<\/title>\n<meta name=\"description\" content=\"Uma explica\u00e7\u00e3o simples sobre como converter colunas de string em um DataFrame do pandas em colunas flutuantes.\" \/>\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\/converter-uma-string-em-pandas-flutuantes\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como converter strings em carros aleg\u00f3ricos no Pandas \u2013 Estatologia\" \/>\n<meta property=\"og:description\" content=\"Uma explica\u00e7\u00e3o simples sobre como converter colunas de string em um DataFrame do pandas em colunas flutuantes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-28T09:32:44+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\/converter-uma-string-em-pandas-flutuantes\/\",\"url\":\"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/\",\"name\":\"Como converter strings em carros aleg\u00f3ricos no Pandas \u2013 Estatologia\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-28T09:32:44+00:00\",\"dateModified\":\"2023-07-28T09:32:44+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Uma explica\u00e7\u00e3o simples sobre como converter colunas de string em um DataFrame do pandas em colunas flutuantes.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/converter-uma-string-em-pandas-flutuantes\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como converter strings para flutuar 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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