{"id":896,"date":"2023-07-28T09:27:40","date_gmt":"2023-07-28T09:27:40","guid":{"rendered":"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/"},"modified":"2023-07-28T09:27:40","modified_gmt":"2023-07-28T09:27:40","slug":"przekonwertuj-kolumny-na-pandy-datetime","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/","title":{"rendered":"Jak przekonwertowa\u0107 kolumny na datetime w pandach"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Cz\u0119sto mo\u017cesz by\u0107 zainteresowany konwersj\u0105 jednej lub wi\u0119cej kolumn pandy DataFrame na format DateTime. Na szcz\u0119\u015bcie mo\u017cna to \u0142atwo zrobi\u0107 za pomoc\u0105 funkcji <a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.to_datetime.html\" target=\"_blank\" rel=\"noopener noreferrer\">to_datetime()<\/a> .<\/span><\/p>\n<p> <span style=\"color: #000000;\">W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w u\u017cycia tej funkcji w nast\u0119puj\u0105cej ramce DataFrame:<\/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.DataFrame({'event': ['A', 'B', 'C'],\n                   'start_date': ['20150601', '20160201', '20170401'],\n                   'end_date': ['20150608', '20160209', '20170416'] })\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n\tevent start_date end_date\n0 A 20150601 20150608\n1 B 20160201 20160209\n2 C 20170401 201704161\n\n<span style=\"color: #008080;\">#view column data types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes\n\n<span style=\"color: #000000;\">event object\nstart_date object\nend_date object\ndtype:object<\/span><\/span><\/strong><\/pre>\n<h3> <strong><span style=\"color: #000000;\">Przyk\u0142ad 1: Konwertuj pojedyncz\u0105 kolumn\u0119 na DateTime<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak przekonwertowa\u0107 kolumn\u0119 \u201edata_pocz\u0105tkowa\u201d z ci\u0105gu znak\u00f3w na format DateTime:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert start_date to DateTime format<\/span>\ndf['start_date'] = pd. <span style=\"color: #3366ff;\">to_datetime<\/span> (df['start_date'])\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        event start_date end_date\n0 A 2015-06-01 20150608\n1 B 2016-02-01 20160209\n2 C 2017-04-01 20170416\n\n<span style=\"color: #008080;\">#view column date types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes<\/span>\n\nevent object\nstart_date datetime64[ns]\nend_date object\ndtype:object<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zauwa\u017c, \u017ce funkcja to_datetime() jest inteligentna i zazwyczaj mo\u017ce okre\u015bli\u0107 w\u0142a\u015bciwy format daty, kt\u00f3rego nale\u017cy u\u017cy\u0107, ale mo\u017cesz tak\u017ce okre\u015bli\u0107, jakiego formatu u\u017cy\u0107 za pomoc\u0105 argumentu <strong>format<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert start_date to DateTime format<\/span>\ndf['start_date'] = pd. <span style=\"color: #3366ff;\">to_datetime<\/span> (df['start_date'], format=' <span style=\"color: #993300;\">%Y%m%d<\/span> ')\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        event start_date end_date\n0 A 2015-06-01 20150608\n1 B 2016-02-01 20160209\n2 C 2017-04-01 20170416\n\n<span style=\"color: #008080;\">#view column date types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes<\/span>\n\nevent object\nstart_date datetime64[ns]\nend_date object\ndtype:object<\/strong><\/pre>\n<h3> <strong><span style=\"color: #000000;\">Przyk\u0142ad 2: Konwertuj wiele kolumn na DateTime<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">Poni\u017cszy kod pokazuje, jak przekonwertowa\u0107 kolumny \u201edata_pocz\u0105tkowa\u201d i \u201edata_ko\u0144cowa\u201d z ci\u0105g\u00f3w znak\u00f3w na formaty DateTime:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert start_date and end_date to DateTime formats<\/span>\ndf[['start_date', 'end_date']] = df[['start_date', 'end_date']]. <span style=\"color: #3366ff;\">apply<\/span> (pd. <span style=\"color: #3366ff;\">to_datetime<\/span> )\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n\tevent start_date end_date\n0 A 2015-06-01 2015-06-08\n1 B 2016-02-01 2016-02-09\n2 C 2017-04-01 2017-04-16\n\n<span style=\"color: #008080;\">#view column date types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes<\/span>\n\nevent object\nstart_date datetime64[ns]\nend_date datetime64[ns]\ndtype:object<\/strong><\/pre>\n<h3> <strong><span style=\"color: #000000;\">Przyk\u0142ad 3: Konwertuj kolumny do formatu DateTime za pomoc\u0105 sekund<\/span><\/strong><\/h3>\n<p> <span style=\"color: #000000;\">W niekt\u00f3rych przypadkach mo\u017cesz tak\u017ce mie\u0107 kolumny zawieraj\u0105ce dat\u0119, a tak\u017ce godziny, minuty i sekundy, na przyk\u0142ad nast\u0119puj\u0105ca ramka danych:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#createDataFrame<\/span>\ndf = pd.DataFrame({'event': ['A', 'B', 'C'],\n                   'start_date': ['20150601043000', '20160201054500', '20170401021215'],\n                   'end_date': ['20150608', '20160209', '20170416'] })\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        event start_date end_date\n0 A 20150601043000 20150608\n1 B 20160201054500 20160209\n2 C 20170401021215 20170416\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Ponownie, funkcja to_datetime() jest inteligentna i zazwyczaj mo\u017ce okre\u015bli\u0107 prawid\u0142owy format, kt\u00f3rego nale\u017cy u\u017cy\u0107, bez konieczno\u015bci jego okre\u015blania:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong><span style=\"color: #008080;\">#convert start_date to DateTime format<\/span>\ndf['start_date'] = pd. <span style=\"color: #3366ff;\">to_datetime<\/span> (df['start_date'])\n\n<span style=\"color: #008080;\">#view DataFrame\n<\/span>df\n\n        event start_date end_date\n0 A 2015-06-01 04:30:00 20150608\n1 B 2016-02-01 05:45:00 20160209\n2 C 2017-04-01 02:12:15 20170416\n\n<span style=\"color: #008080;\">#view column date types\n<\/span>df. <span style=\"color: #3366ff;\">dtypes<\/span>\n\nevent object\nstart_date datetime64[ns]\nend_date object\ndtype:object<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Oczywi\u015bcie w \u015brodowisku naturalnym prawdopodobnie napotkasz wiele dziwnych format\u00f3w DateTime, wi\u0119c mo\u017ce by\u0107 konieczne u\u017cycie argumentu <strong>format<\/strong> , aby dok\u0142adnie powiedzie\u0107 Pythonowi, jakiego formatu DateTime ma u\u017cy\u0107.<\/span><\/p>\n<p> <span style=\"color: #000000;\">W takich przypadkach na <a href=\"https:\/\/strftime.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">tej stronie<\/a> znajduje si\u0119 pe\u0142na lista<\/span> <span style=\"color: #000000;\">operator\u00f3w %DateTime, kt\u00f3rych mo\u017cna u\u017cy\u0107 do okre\u015blenia format\u00f3w.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Dodatkowe zasoby<\/strong><\/span><\/h3>\n<p> <a href=\"https:\/\/statorials.org\/pl\/przekonwertuj-date\/godzine-na-pandy-daty\/\">Jak przekonwertowa\u0107 DateTime na dat\u0119 w Pandach<\/a><br \/> <a href=\"https:\/\/statorials.org\/pl\/przekonwertuj-ciag-na-p\u0142ywajace-pandy\/\">Jak przekonwertowa\u0107 ci\u0105gi na p\u0142ywaj\u0105ce w Pandach<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cz\u0119sto mo\u017cesz by\u0107 zainteresowany konwersj\u0105 jednej lub wi\u0119cej kolumn pandy DataFrame na format DateTime. Na szcz\u0119\u015bcie mo\u017cna to \u0142atwo zrobi\u0107 za pomoc\u0105 funkcji to_datetime() . W tym samouczku przedstawiono kilka przyk\u0142ad\u00f3w u\u017cycia tej funkcji w nast\u0119puj\u0105cej ramce DataFrame: import numpy as np import pandas as pd #createDataFrame df = pd.DataFrame({&#8217;event&#8217;: [&#8217;A&#8217;, 'B&#8217;, 'C&#8217;], 'start_date&#8217;: [&#8217;20150601&#8242;, [&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-896","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 przekonwertowa\u0107 kolumny na DateTime w Pandach \u2013 Statorials<\/title>\n<meta name=\"description\" content=\"Proste wyja\u015bnienie, jak konwertowa\u0107 kolumny DataFrame na formaty DateTime w pandach.\" \/>\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\/przekonwertuj-kolumny-na-pandy-datetime\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak przekonwertowa\u0107 kolumny na DateTime w Pandach \u2013 Statorials\" \/>\n<meta property=\"og:description\" content=\"Proste wyja\u015bnienie, jak konwertowa\u0107 kolumny DataFrame na formaty DateTime w pandach.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-28T09:27:40+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=\"3 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/\",\"url\":\"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/\",\"name\":\"Jak przekonwertowa\u0107 kolumny na DateTime w Pandach \u2013 Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-28T09:27:40+00:00\",\"dateModified\":\"2023-07-28T09:27:40+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"Proste wyja\u015bnienie, jak konwertowa\u0107 kolumny DataFrame na formaty DateTime w pandach.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/przekonwertuj-kolumny-na-pandy-datetime\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Jak przekonwertowa\u0107 kolumny na datetime w pandach\"}]},{\"@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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