{"id":2523,"date":"2023-07-21T21:45:15","date_gmt":"2023-07-21T21:45:15","guid":{"rendered":"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/"},"modified":"2023-07-21T21:45:15","modified_gmt":"2023-07-21T21:45:15","slug":"pandy-czytaja-html","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/","title":{"rendered":"Jak czyta\u0107 tabele html za pomoc\u0105 pand (w tym przyk\u0142ad)"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Mo\u017cesz u\u017cy\u0107 funkcji pandas <a href=\"https:\/\/pandas.pydata.org\/docs\/reference\/api\/pandas.read_html.html\" target=\"_blank\" rel=\"noopener\">read_html()<\/a> , aby wczyta\u0107 tabele HTML do ramki DataFrame pandy.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Ta funkcja wykorzystuje nast\u0119puj\u0105c\u0105 podstawow\u0105 sk\u0142adni\u0119:<\/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;\">Poni\u017cszy przyk\u0142ad pokazuje, jak u\u017cy\u0107 tej funkcji do odczytania tabeli nazw dru\u017cyn NBA z <a href=\"https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association\" target=\"_blank\" rel=\"noopener\">tej strony Wikipedii<\/a> .<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad: Przeczytaj tabel\u0119 HTML za pomoc\u0105 Pand<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Przed u\u017cyciem funkcji <strong>read_html()<\/strong> prawdopodobnie b\u0119dziesz musia\u0142 zainstalowa\u0107 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>Uwaga<\/strong> : Je\u015bli u\u017cywasz notebooka Jupyter, po przeprowadzeniu tej instalacji musisz ponownie uruchomi\u0107 j\u0105dro.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Nast\u0119pnie mo\u017cemy u\u017cy\u0107 funkcji <strong>read_html()<\/strong> do odczytania ka\u017cdej tabeli HTML na <a href=\"https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association\" target=\"_blank\" rel=\"noopener\">tej stronie Wikipedii<\/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;\">Widzimy, \u017ce na tej stronie znaleziono \u0142\u0105cznie 44 tabele HTML.<\/span><\/p>\n<p> <span style=\"color: #000000;\">Wiem, \u017ce interesuj\u0105ca mnie tabela zawiera s\u0142owo \u201ePodzia\u0142\u201d, wi\u0119c mog\u0119 u\u017cy\u0107 argumentu <strong>dopasowania<\/strong> , aby pobra\u0107 tylko tabele HTML zawieraj\u0105ce to s\u0142owo:<\/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;\">Mog\u0119 wtedy <a href=\"https:\/\/statorials.org\/pl\/nazwy-kolumn-listy-pand\/\" target=\"_blank\" rel=\"noopener\">wy\u015bwietli\u0107 nazwy<\/a> kolumn tabeli:<\/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;\">Interesuj\u0105 mnie tylko dwie pierwsze kolumny, wi\u0119c mog\u0119 <a href=\"https:\/\/statorials.org\/pl\/pandy-loc-vs-iloc\/\" target=\"_blank\" rel=\"noopener\">przefiltrowa\u0107<\/a> ramk\u0119 DataFrame tak, aby zawiera\u0142a tylko te kolumny:<\/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;\">Tabela ko\u0144cowa zawiera tylko kolumny \u201eDywizja\u201d i \u201eZesp\u00f3\u0142\u201d.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017csze samouczki wyja\u015bniaj\u0105, jak czyta\u0107 inne typy plik\u00f3w w pandach:<\/span><\/p>\n<p> <a href=\"https:\/\/statorials.org\/pl\/pandy-czytaja-plik-tekstowy\/\" target=\"_blank\" rel=\"noopener\">Jak odczyta\u0107 plik tekstowy za pomoc\u0105 Pand<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandy-czytaja-excela\/\" target=\"_blank\" rel=\"noopener\">Jak czyta\u0107 pliki Excel za pomoc\u0105 Pand<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/pandy-czytaja-csv\/\" target=\"_blank\" rel=\"noopener\">Jak czyta\u0107 pliki CSV za pomoc\u0105 Pand<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mo\u017cesz u\u017cy\u0107 funkcji pandas read_html() , aby wczyta\u0107 tabele HTML do ramki DataFrame pandy. Ta funkcja wykorzystuje nast\u0119puj\u0105c\u0105 podstawow\u0105 sk\u0142adni\u0119: df = pd. read_html (&#8217; https:\/\/en.wikipedia.org\/wiki\/National_Basketball_Association &#8217;) Poni\u017cszy przyk\u0142ad pokazuje, jak u\u017cy\u0107 tej funkcji do odczytania tabeli nazw dru\u017cyn NBA z tej strony Wikipedii . Przyk\u0142ad: Przeczytaj tabel\u0119 HTML za pomoc\u0105 Pand Przed u\u017cyciem funkcji [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2523","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Jak czyta\u0107 tabele HTML za pomoc\u0105 Pand (z przyk\u0142adem) - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak czyta\u0107 tabele HTML za pomoc\u0105 pand, na przyk\u0142adzie.\" \/>\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\/pl\/pandy-czytaja-html\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak czyta\u0107 tabele HTML za pomoc\u0105 Pand (z przyk\u0142adem) - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak czyta\u0107 tabele HTML za pomoc\u0105 pand, na przyk\u0142adzie.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/pandy-czytaja-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=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/\",\"url\":\"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/\",\"name\":\"Jak czyta\u0107 tabele HTML za pomoc\u0105 Pand (z przyk\u0142adem) - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-21T21:45:15+00:00\",\"dateModified\":\"2023-07-21T21:45:15+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak czyta\u0107 tabele HTML za pomoc\u0105 pand, na przyk\u0142adzie.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/pandy-czytaja-html\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak czyta\u0107 tabele html za pomoc\u0105 pand (w tym przyk\u0142ad)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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