{"id":2524,"date":"2023-07-21T21:45:15","date_gmt":"2023-07-21T21:45:15","guid":{"rendered":"https:\/\/statorials.org\/pt\/pandas-leem-html\/"},"modified":"2023-07-21T21:45:15","modified_gmt":"2023-07-21T21:45:15","slug":"pandas-leem-html","status":"publish","type":"post","link":"https:\/\/statorials.org\/pt\/pandas-leem-html\/","title":{"rendered":"Como ler tabelas html com pandas (incluindo um exemplo)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Voc\u00ea pode usar a fun\u00e7\u00e3o pandas <a href=\"https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.read_html.html\" target=\"_blank\" rel=\"noopener\">read_html()<\/a> para ler tabelas HTML em um DataFrame do pandas.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Esta fun\u00e7\u00e3o usa a seguinte sintaxe b\u00e1sica:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>df = pd. <span style=\"color: #3366ff;\">read_html<\/span> (' <span style=\"color: #ff0000;\">https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association<\/span> ')\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">O exemplo a seguir mostra como usar esta fun\u00e7\u00e3o para ler uma tabela de nomes de times da NBA <a href=\"https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association\" target=\"_blank\" rel=\"noopener\">nesta p\u00e1gina da Wikipedia<\/a> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Exemplo: Leia uma tabela HTML com Pandas<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Antes de usar a fun\u00e7\u00e3o <strong>read_html()<\/strong> , voc\u00ea provavelmente precisar\u00e1 instalar o lxml:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong>pip <span style=\"color: #008000;\">install<\/span> lxml<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Nota<\/strong> : Se voc\u00ea estiver usando um notebook Jupyter, dever\u00e1 reiniciar o kernel ap\u00f3s realizar esta instala\u00e7\u00e3o.<\/span><\/p>\n<p> <span style=\"color: #000000;\">A seguir, podemos usar a fun\u00e7\u00e3o <strong>read_html()<\/strong> para ler cada tabela HTML <a href=\"https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association\" target=\"_blank\" rel=\"noopener\">nesta p\u00e1gina da Wikipedia<\/a> :<\/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<span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008000;\">import<\/span> numpy <span style=\"color: #008000;\">as<\/span> np\n<span style=\"color: #008000;\">import<\/span> matplotlib. <span style=\"color: #3366ff;\">pyplot<\/span> <span style=\"color: #008000;\">as<\/span> plt\n<span style=\"color: #008000;\">from<\/span> unicodedata <span style=\"color: #008000;\">import<\/span> normalize\n\n<span style=\"color: #008080;\">#read all HTML tables from specific URL\n<\/span>tabs = pd. <span style=\"color: #3366ff;\">read_html<\/span> (' <span style=\"color: #ff0000;\">https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association<\/span> ')\n\n<span style=\"color: #008080;\">#display total number of tables read\n<\/span><span style=\"color: #008000;\">len<\/span> (tabs)\n\n44<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Podemos ver que um total de 44 tabelas HTML foram encontradas nesta p\u00e1gina.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Eu sei que a tabela na qual estou interessado cont\u00e9m a palavra &#8220;Divis\u00e3o&#8221;, ent\u00e3o posso usar o argumento <strong>match<\/strong> para recuperar apenas tabelas HTML que contenham esta palavra:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\"><span style=\"color: #000000;\"><span style=\"color: #008080;\">#read HTML tables from specific URL with the word \"Division\" in them\n<\/span>tabs = pd. <span style=\"color: #3366ff;\">read_html<\/span> (' <span style=\"color: #ff0000;\">https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association<\/span> ',\n                    match=' <span style=\"color: #ff0000;\">Division<\/span> ')\n\n<span style=\"color: #008080;\">#display total number of tables read\n<\/span><span style=\"color: #008000;\">len<\/span> (tabs)\n\n1<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Posso ent\u00e3o <a href=\"https:\/\/statorials.org\/pt\/nomes-de-colunas-da-lista-pandas\/\" target=\"_blank\" rel=\"noopener\">listar os nomes<\/a> das colunas da tabela:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#define table\n<span style=\"color: #000000;\">df = tabs[0]<\/span>\n\n#list all column names of table\n<span style=\"color: #000000;\"><span style=\"color: #008000;\">list<\/span> (df)\n\n[('Division', 'Eastern Conference'),\n ('Team', 'Eastern Conference'),\n ('Location', 'Eastern Conference'),\n ('Arena', 'Eastern Conference'),\n ('Capacity', 'Eastern Conference'),\n ('Coordinates', 'Eastern Conference'),\n ('Founded', 'Eastern Conference'),\n ('Joined', 'Eastern Conference'),\n ('Unnamed: 8_level_0', 'Eastern Conference')]<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Estou interessado apenas nas duas primeiras colunas, ent\u00e3o posso <a href=\"https:\/\/statorials.org\/pt\/pandas-loc-vs-iloc\/\" target=\"_blank\" rel=\"noopener\">filtrar<\/a> o DataFrame para conter apenas estas colunas:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <span style=\"color: #000000;\"><strong><span style=\"color: #008080;\">#filter DataFrame to only contain first two columns\n<\/span>df_final = df. <span style=\"color: #3366ff;\">iloc<\/span> [:, 0:2]\n\n<span style=\"color: #008080;\">#rename columns\n<\/span>df_final. <span style=\"color: #3366ff;\">columns<\/span> = [' <span style=\"color: #ff0000;\">Division<\/span> ', ' <span style=\"color: #ff0000;\">Team<\/span> ']\n\n<span style=\"color: #008080;\">#view first few rows of final DataFrame\n<\/span><span style=\"color: #008000;\">print<\/span> ( <span style=\"color: #3366ff;\">df_final.head<\/span> ())\n\n   Division Team\n0 Atlantic Boston Celtics\n1 Atlantic Brooklyn Nets\n2 Atlantic New York Knicks\n3 Atlantic Philadelphia 76ers\n4 Atlantic Toronto Raptors\n<\/strong><\/span><\/pre>\n<p> <span style=\"color: #000000;\">A tabela final cont\u00e9m apenas as colunas \u201cDivis\u00e3o\u201d e \u201cEquipe\u201d.<\/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 ler outros tipos de arquivos no pandas:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pt\/pandas-leem-arquivo-de-texto\/\" target=\"_blank\" rel=\"noopener\">Como ler um arquivo de texto com Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-leem-excel\/\" target=\"_blank\" rel=\"noopener\">Como ler arquivos Excel com Pandas<\/a><br \/> <a href=\"https:\/\/statorials.org\/pt\/pandas-leem-csv\/\" target=\"_blank\" rel=\"noopener\">Como ler arquivos CSV com Pandas<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Voc\u00ea pode usar a fun\u00e7\u00e3o pandas read_html() para ler tabelas HTML em um DataFrame do pandas. Esta fun\u00e7\u00e3o usa a seguinte sintaxe b\u00e1sica: df = pd. read_html (&#8216; https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association &#8216;) O exemplo a seguir mostra como usar esta fun\u00e7\u00e3o para ler uma tabela de nomes de times da NBA nesta p\u00e1gina da Wikipedia . Exemplo: [&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-2524","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 ler tabelas HTML com Pandas (com exemplo) - Estatoriais<\/title>\n<meta name=\"description\" content=\"Este tutorial explica como ler tabelas HTML com 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\/pandas-leem-html\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como ler tabelas HTML com Pandas (com exemplo) - Estatoriais\" \/>\n<meta property=\"og:description\" content=\"Este tutorial explica como ler tabelas HTML com pandas, com um exemplo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pt\/pandas-leem-html\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-21T21:45:15+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-leem-html\/\",\"url\":\"https:\/\/statorials.org\/pt\/pandas-leem-html\/\",\"name\":\"Como ler tabelas HTML com Pandas (com exemplo) - Estatoriais\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pt\/#website\"},\"datePublished\":\"2023-07-21T21:45:15+00:00\",\"dateModified\":\"2023-07-21T21:45:15+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pt\/#\/schema\/person\/e08f98e8db95e0aa9c310e1b27c9c666\"},\"description\":\"Este tutorial explica como ler tabelas HTML com pandas, com um exemplo.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pt\/pandas-leem-html\/#breadcrumb\"},\"inLanguage\":\"pt-PT\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pt\/pandas-leem-html\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pt\/pandas-leem-html\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Lar\",\"item\":\"https:\/\/statorials.org\/pt\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Como ler tabelas html com pandas (incluindo um exemplo)\"}]},{\"@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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