{"id":4041,"date":"2023-07-14T00:15:11","date_gmt":"2023-07-14T00:15:11","guid":{"rendered":"https:\/\/statorials.org\/pt\/trocar-linhas-do-panda\/"},"modified":"2023-07-14T00:15:11","modified_gmt":"2023-07-14T00:15:11","slug":"trocar-linhas-do-panda","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/trocar-linhas-do-panda\/","title":{"rendered":"Como trocar duas linhas em pandas (com exemplo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a seguinte fun\u00e7\u00e3o personalizada para trocar a posi\u00e7\u00e3o de duas linhas em um DataFrame do pandas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\">def<\/span> <span style=\"color: #0000ff;\">swap_rows<\/span> (df, row1, row2):\n    df. <span style=\"color: #3366ff;\">iloc<\/span> [row1], df. <span style=\"color: #3366ff;\">iloc<\/span> [row2] = df. <span style=\"color: #3366ff;\">iloc<\/span> [row2]. <span style=\"color: #3366ff;\">copy<\/span> (), df. <span style=\"color: #3366ff;\">iloc<\/span> [row1]. <span style=\"color: #3366ff;\">copy<\/span> ()\n    <span style=\"color: #008000;\">return<\/span> df\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o ir\u00e1 trocar as posi\u00e7\u00f5es das linhas nas posi\u00e7\u00f5es dos \u00edndices <strong>row1<\/strong> e <strong>row2<\/strong> no DataFrame.<\/span><\/p>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar esta fun\u00e7\u00e3o na pr\u00e1tica.<\/span><\/p>\n<h2> <span style=\"color: #000000;\"><strong>Exemplo: troque duas linhas no Pandas<\/strong><\/span><\/h2>\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;\"> <strong><span style=\"color: #008000;\">import<\/span> pandas <span style=\"color: #008000;\">as<\/span> pd\n\n<span style=\"color: #008080;\">#createDataFrame<span style=\"color: #000000;\">\ndf = pd. <span style=\"color: #3366ff;\">DataFrame<\/span> ({' <span style=\"color: #ff0000;\">team<\/span> ': ['Mavs', 'Nets', 'Kings', 'Cavs', 'Heat', 'Magic'],\n                   ' <span style=\"color: #ff0000;\">points<\/span> ': [12, 15, 22, 29, 24, 22],\n                   ' <span style=\"color: #ff0000;\">assists<\/span> ': [4, 5, 10, 8, 7, 10]})\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n    team points assists\n0 Mavs 12 4\n1 Nets 15 5\n2Kings 22 10\n3 Cavs 29 8\n4 Heat 24 7\n5 Magic 22 10\n<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Podemos definir uma fun\u00e7\u00e3o <strong>swap_rows()<\/strong> para trocar linhas nas posi\u00e7\u00f5es de \u00edndice 0 e 4 no DataFrame:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008000;\"><span style=\"color: #008080;\">#define function to swap rows<\/span>\ndef<\/span> <span style=\"color: #0000ff;\">swap_rows<\/span> (df, row1, row2):\n    df. <span style=\"color: #3366ff;\">iloc<\/span> [row1], df. <span style=\"color: #3366ff;\">iloc<\/span> [row2] = df. <span style=\"color: #3366ff;\">iloc<\/span> [row2]. <span style=\"color: #3366ff;\">copy<\/span> (), df. <span style=\"color: #3366ff;\">iloc<\/span> [row1]. <span style=\"color: #3366ff;\">copy<\/span> ()\n    <span style=\"color: #008000;\">return<\/span> df\n\n<span style=\"color: #008080;\">#swap rows in index positions 0 and 4\n<\/span>df = swap_rows(df, <span style=\"color: #008000;\">0<\/span> , <span style=\"color: #008000;\">4<\/span> )\n\n<span style=\"color: #008080;\">#view updated DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> (df)\n\n    team points assists\n0 Heat 24 7\n1 Nets 15 5\n2Kings 22 10\n3 Cavs 29 8\n4 Mavs 12 4\n5 Magic 22 10\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">Observe que as linhas nas posi\u00e7\u00f5es de \u00edndice 0 e 4 foram trocadas enquanto todas as outras linhas permaneceram na mesma posi\u00e7\u00e3o.<\/span><\/p>\n<p> <span style=\"color: #000000;\"><span style=\"color: #000000;\"><strong>Nota<\/strong> : Na fun\u00e7\u00e3o <strong>swap_rows()<\/strong> , usamos a fun\u00e7\u00e3o <a href=\"https:\/\/statorials.org\/pt\/pandas-loc-vs-iloc\/\" target=\"_blank\" rel=\"noopener\">.iloc<\/a> para selecionar as linhas do DataFrame com base em sua posi\u00e7\u00e3o de \u00edndice.<\/span><\/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 tarefas comuns em pandas:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/pandas-conta-valor-especifico-na-coluna\/\" target=\"_blank\" rel=\"noopener\">Pandas: como contar ocorr\u00eancias de valores espec\u00edficos em uma coluna<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-obtem-indice-de-linha\/\" target=\"_blank\" rel=\"noopener\">Pandas: obt\u00e9m o \u00edndice de linhas cuja coluna corresponde ao valor<\/a><br \/><a href=\"https:\/\/statorials.org\/pt\/pandas-contam-valores-faltantes\/\" target=\"_blank\" rel=\"noopener\">Pandas: Como contar valores ausentes no DataFrame<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a seguinte fun\u00e7\u00e3o personalizada para trocar a posi\u00e7\u00e3o de duas linhas em um DataFrame do pandas: def swap_rows (df, row1, row2): df. iloc [row1], df. iloc [row2] = df. iloc [row2]. copy (), df. iloc [row1]. copy () return df Esta fun\u00e7\u00e3o ir\u00e1 trocar as posi\u00e7\u00f5es das linhas nas posi\u00e7\u00f5es dos \u00edndices [&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-4041","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 trocar duas linhas em Pandas (com exemplo) \u2013 Estatologia<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como trocar duas linhas em um DataFrame do pandas, com um exemplo.\" \/>\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\/trocar-linhas-do-panda\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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