{"id":5086,"date":"2021-01-11T07:22:27","date_gmt":"2021-01-10T22:22:27","guid":{"rendered":"http:\/\/hituji1012.xsrv.jp\/?p=379"},"modified":"2026-08-01T13:55:26","modified_gmt":"2026-08-01T04:55:26","slug":"71","status":"publish","type":"post","link":"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/","title":{"rendered":"\u3010pandas\u3011csv\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\/\u66f8\u304d\u8fbc\u3080\u3010Python\u3011"},"content":{"rendered":"\n<p>python\u3067\u306f\u6a5f\u68b0\u5b66\u7fd2\u3084\u30c7\u30fc\u30bf\u89e3\u6790\u3092\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001CSV\u306e\u8aad\u307f\u8fbc\u307f\u306a\u3069\u306e\u64cd\u4f5c\u306f\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u3081\u306a\u3051\u308c\u3070\u3001\u89e3\u6790\u3082\u3067\u304d\u306a\u3044\u306e\u3067\u3068\u3066\u3082\u5927\u4e8b\u3067\u3059\u3002<\/p>\n<p>\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u3067\u3082\u4fbf\u5229\u306a<a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/\" target=\"_blank\" rel=\"noopener noreferrer\">pandas<\/a>\u3068\u3044\u3046\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>pandas\u306f\u4ed6\u306b\u3082\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u3082\u30c7\u30fc\u30bf\u304c\u53d6\u5f97\u3067\u304d\u307e\u3059\u306e\u3067\u3001python\u3067\u306f\u5fc5\u9808\u30e9\u30a4\u30d6\u30e9\u30ea\u306e1\u3064\u3067\u3059\u3002<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_38 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" style=\"display: none;\"><label for=\"item\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;\"><svg style=\"fill: #444444;color:#444444\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #444444;color:#444444\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/label><input type=\"checkbox\" id=\"item\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#pandas%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\" title=\"pandas\u306b\u3064\u3044\u3066\">pandas\u306b\u3064\u3044\u3066<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#pip%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB\" title=\"pip\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\">pip\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#pandas%E3%81%A7%E3%81%AFdataframe%E3%81%A8%E3%81%84%E3%81%86%E5%9E%8B%E3%82%92%E4%BD%BF%E3%81%86\" title=\"pandas\u3067\u306fdataframe\u3068\u3044\u3046\u578b\u3092\u4f7f\u3046\">pandas\u3067\u306fdataframe\u3068\u3044\u3046\u578b\u3092\u4f7f\u3046<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#pandas%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%82%92pd%E3%81%A8%E3%81%97%E3%81%A6%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\" title=\"pandas\u30e9\u30a4\u30d6\u30e9\u30ea\u3092pd\u3068\u3057\u3066\u8aad\u307f\u8fbc\u3080\">pandas\u30e9\u30a4\u30d6\u30e9\u30ea\u3092pd\u3068\u3057\u3066\u8aad\u307f\u8fbc\u3080<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#csv%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\" title=\"csv\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\">csv\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#read_csv%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%A7%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\" title=\"read_csv\u30e1\u30bd\u30c3\u30c9\u3067\u8aad\u307f\u8fbc\u3080\">read_csv\u30e1\u30bd\u30c3\u30c9\u3067\u8aad\u307f\u8fbc\u3080<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#shape%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%A7%E3%83%87%E3%83%BC%E3%82%BF%E6%95%B0%E3%82%92%E7%A2%BA%E8%AA%8D\" title=\"shape\u30e1\u30bd\u30c3\u30c9\u3067\u30c7\u30fc\u30bf\u6570\u3092\u78ba\u8a8d\">shape\u30e1\u30bd\u30c3\u30c9\u3067\u30c7\u30fc\u30bf\u6570\u3092\u78ba\u8a8d<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E7%A2%BA%E8%AA%8D%E3%81%99%E3%82%8B%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89\" title=\"\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3059\u308b\u30e1\u30bd\u30c3\u30c9\">\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3059\u308b\u30e1\u30bd\u30c3\u30c9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#%E3%83%87%E3%83%BC%E3%82%BF%E3%81%8C%E6%AC%A0%E6%90%8D%E3%81%97%E3%81%A6%E3%81%84%E3%82%8B%E5%A0%B4%E5%90%88%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\" title=\"\u30c7\u30fc\u30bf\u304c\u6b20\u640d\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u8aad\u307f\u8fbc\u307f\">\u30c7\u30fc\u30bf\u304c\u6b20\u640d\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u8aad\u307f\u8fbc\u307f<\/a><ul class='ez-toc-list-level-4'><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#%E5%88%97%E5%90%8D%E3%81%AE%E3%81%AA%E3%81%84%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80%E3%81%AB%E3%81%AF%E5%BC%95%E6%95%B0%E3%82%92headerNone%E3%81%A8%E3%81%99%E3%82%8B\" title=\"\u5217\u540d\u306e\u306a\u3044\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u306b\u306f\u5f15\u6570\u3092header=None\u3068\u3059\u308b\">\u5217\u540d\u306e\u306a\u3044\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u306b\u306f\u5f15\u6570\u3092header=None\u3068\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#%E9%96%8B%E5%A7%8B%E4%BD%8D%E7%BD%AE%E3%81%8C%E3%81%9A%E3%82%8C%E3%81%A6%E3%81%84%E3%82%8B%E3%83%87%E3%83%BC%E3%82%BF%E3%81%AF%E5%BC%95%E6%95%B0%E3%81%ABheader%E5%88%97%E5%90%8D%E3%81%AE%E9%96%8B%E5%A7%8B%E8%A1%8C%E6%95%B0%E3%82%92%E6%8C%87%E5%AE%9A\" title=\"\u958b\u59cb\u4f4d\u7f6e\u304c\u305a\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u306f\u5f15\u6570\u306bheader=\u5217\u540d\u306e\u958b\u59cb\u884c\u6570\u3092\u6307\u5b9a\">\u958b\u59cb\u4f4d\u7f6e\u304c\u305a\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u306f\u5f15\u6570\u306bheader=\u5217\u540d\u306e\u958b\u59cb\u884c\u6570\u3092\u6307\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF%E5%88%97%E3%81%AE%E6%8C%87%E5%AE%9A%E3%81%97%E3%81%9F%E3%81%84%E5%A0%B4%E5%90%88%E3%81%AF%E5%BC%95%E6%95%B0%E3%81%ABusecols%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E6%8C%87%E5%AE%9A%E3%81%99%E3%82%8B\" title=\"\u8aad\u307f\u8fbc\u307f\u5217\u306e\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f\u5f15\u6570\u306busecols\u3092\u4f7f\u3063\u3066\u6307\u5b9a\u3059\u308b\">\u8aad\u307f\u8fbc\u307f\u5217\u306e\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f\u5f15\u6570\u306busecols\u3092\u4f7f\u3063\u3066\u6307\u5b9a\u3059\u308b<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#CSV%E3%81%AE%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%81%BF\" title=\"CSV\u306e\u66f8\u304d\u8fbc\u307f\">CSV\u306e\u66f8\u304d\u8fbc\u307f<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#to_csv%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%A7%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%82%80\" title=\"to_csv\u30e1\u30bd\u30c3\u30c9\u3067\u66f8\u304d\u8fbc\u3080\">to_csv\u30e1\u30bd\u30c3\u30c9\u3067\u66f8\u304d\u8fbc\u3080<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#columns%E5%AF%BE%E8%B1%A1%E3%81%AE%E5%88%97%E5%90%8D%E3%83%AA%E3%82%B9%E3%83%88%E3%82%92%E5%BC%95%E6%95%B0%E3%81%AB%E6%8C%87%E5%AE%9A%E3%81%97%E3%81%A6%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%82%80\" title=\"columns=\u5bfe\u8c61\u306e\u5217\u540d\u30ea\u30b9\u30c8\u3092\u5f15\u6570\u306b\u6307\u5b9a\u3057\u3066\u66f8\u304d\u8fbc\u3080\">columns=\u5bfe\u8c61\u306e\u5217\u540d\u30ea\u30b9\u30c8\u3092\u5f15\u6570\u306b\u6307\u5b9a\u3057\u3066\u66f8\u304d\u8fbc\u3080<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/#%E3%81%BE%E3%81%A8%E3%82%81\" title=\"\u307e\u3068\u3081\">\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"pandas%E3%81%AB%E3%81%A4%E3%81%84%E3%81%A6\"><\/span>pandas\u306b\u3064\u3044\u3066<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>pandas\u306f\u8868\u30c7\u30fc\u30bf\u306e\u53d6\u308a\u6271\u3044\u306b\u7279\u5316\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002<\/p>\n<p>\u3082\u3068\u3082\u3068\u3001\u91d1\u878d\u30c7\u30fc\u30bf\u3092\u5206\u6790\u3059\u308b\u305f\u3081\u306b\u958b\u767a\u3055\u308c\u305f\u30c4\u30fc\u30eb\u3067\u3001\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<div>\n<div style=\"height: 15px;\"><span style=\"background: #91D8AC; padding: 10px 10px; border-radius: 10px; color: #ffffff; font-weight: bold; margin-left: 10px;\">pandas\u3092\u4f7f\u3063\u3066\u3067\u304d\u308b\u3053\u3068<\/span><\/div>\n<div style=\"padding: 30px 15px 10px; border-radius: 5px; border: 8px solid #91D8AC;\">\n<ol>\n<li>\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u66f8\u304d\u8fbc\u307f<\/li>\n<li>\u30c7\u30fc\u30bf\u540c\u58eb\u306e\u7d50\u5408<\/li>\n<li>\u30c7\u30fc\u30bf\u306e\u6b20\u640d\u5024\u88dc\u5b8c\u306a\u3069\u306e\u52a0\u5de5<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<h3><span class=\"ez-toc-section\" id=\"pip%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E3%82%A4%E3%83%B3%E3%82%B9%E3%83%88%E3%83%BC%E3%83%AB\"><\/span>pip\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u4ed6\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u540c\u3058\u304fpip\u3092\u4f7f\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059<\/p>\n<pre class=\"lang:python decode:true \">pip install pandas<\/pre>\n<h3><span class=\"ez-toc-section\" id=\"pandas%E3%81%A7%E3%81%AFdataframe%E3%81%A8%E3%81%84%E3%81%86%E5%9E%8B%E3%82%92%E4%BD%BF%E3%81%86\"><\/span>pandas\u3067\u306fdataframe\u3068\u3044\u3046\u578b\u3092\u4f7f\u3046<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>pandas\u3067\u306fdataframe\u3068\u3044\u3046\u578b\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>DataFrame\u306f\u4ee5\u4e0b\u306e3\u3064\u306e\u69cb\u6210\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<div>\n<div style=\"height: 15px;\"><span style=\"background: #91D8AC; padding: 10px 10px; border-radius: 10px; color: #ffffff; font-weight: bold; margin-left: 10px;\">dataframe\u306e3\u3064\u306e\u69cb\u6210<\/span><\/div>\n<div style=\"padding: 30px 15px 10px; border-radius: 5px; border: 8px solid #91D8AC;\">\n<ol>\n<li>columns(\u5217\u540d)<\/li>\n<li>index(\u884c\u540d)<\/li>\n<li>values(\u5024)<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-770 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_1.png\" alt=\"\" width=\"469\" height=\"230\" \/><\/p>\n<p>pandas\u3067\u306f\u3053\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3084\u3001\u30a8\u30af\u30bb\u30eb\u306a\u3069\u306e\u8868\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u6271\u3046\u306e\u304c\u5f97\u610f\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"pandas%E3%83%A9%E3%82%A4%E3%83%96%E3%83%A9%E3%83%AA%E3%82%92pd%E3%81%A8%E3%81%97%E3%81%A6%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\"><\/span>pandas\u30e9\u30a4\u30d6\u30e9\u30ea\u3092pd\u3068\u3057\u3066\u8aad\u307f\u8fbc\u3080<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>pandas\u3092\u4f7f\u3046\u3068\u304d\u306f\u4e0b\u8a18\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>pandas\u3092pd\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true \">import pandas as pd<\/pre>\n<h2><span class=\"ez-toc-section\" id=\"csv%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\"><\/span>csv\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e0b\u8a18\u306eCSV(sample.csv)\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-772 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_3.png\" alt=\"\" width=\"200\" height=\"179\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_3.png 312w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_3-300x269.png 300w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/p>\n<p><a href=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/sample.csv\" target=\"_blank\" rel=\"noopener noreferrer\">sample<\/a><\/p>\n<p>\u4e0a\u8a18\u30ea\u30f3\u30af\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30fc\u30c9\u3068\u540c\u3058\u5834\u6240\u306b\u4fdd\u5b58\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u53f3\u30af\u30ea\u30c3\u30af\u3067\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"read_csv%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%A7%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80\"><\/span>read_csv\u30e1\u30bd\u30c3\u30c9\u3067\u8aad\u307f\u8fbc\u3080<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8aad\u307f\u8fbc\u307f\u306b\u306f<a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.read_csv.html\" target=\"_blank\" rel=\"noopener noreferrer\">read_csv<\/a>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e00\u756a\u30b7\u30f3\u30d7\u30eb\u306a\u4f7f\u3044\u65b9\u306f\u3001<strong>df = pd.read_csv(&#8216;\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9&#8217;)<\/strong>\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-775 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_4.png\" alt=\"\" width=\"651\" height=\"284\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_4.png 651w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_4-600x262.png 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_4-300x131.png 300w\" sizes=\"(max-width: 651px) 100vw, 651px\" \/><\/p>\n<pre class=\"toolbar:1 lang:python decode:true \" title=\"In\">df = pd.read_csv('sample.csv')<\/pre>\n<pre class=\"toolbar:1 lang:default decode:true \" title=\"Out\">UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8e in position 0: invalid start byte<\/pre>\n<p>\u3057\u304b\u3057\u3001\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u82f1\u8a9e\u306e\u307f\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308c\u3070\u826f\u3044\u3067\u3059\u304c\u3001\u65e5\u672c\u8a9e\u3092\u542b\u3080\u5834\u5408\u306f\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u6c17\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>python\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e<a href=\"https:\/\/docs.python.org\/ja\/3\/library\/codecs.html#standard-encodings\" target=\"_blank\" rel=\"noopener noreferrer\">\u6a19\u6e96\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/a>\u304c\u305d\u306e\u30ea\u30b9\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f\u65e5\u672c\u8a9e\u5bfe\u5fdc\u306e\u300ccp932\u300d\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-771 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_2.png\" alt=\"\" width=\"700\" height=\"180\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2.png 1590w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2-600x154.png 600w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2-300x77.png 300w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2-1024x263.png 1024w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2-768x197.png 768w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2-1536x394.png 1536w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_2-940x241.png 940w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<p>\u5f15\u6570\u306b\u3001<strong>encoding=&#8217;cp932&#8242;<\/strong>\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true \">df = pd.read_csv('sample.csv', encoding='cp932')<\/pre>\n<p>\u30a8\u30e9\u30fc\u3082\u306a\u304f\u8aad\u307f\u8fbc\u3081\u307e\u3057\u305f\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"shape%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%A7%E3%83%87%E3%83%BC%E3%82%BF%E6%95%B0%E3%82%92%E7%A2%BA%E8%AA%8D\"><\/span>shape\u30e1\u30bd\u30c3\u30c9\u3067\u30c7\u30fc\u30bf\u6570\u3092\u78ba\u8a8d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u6570\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.DataFrame.shape.html?highlight=shape#pandas.DataFrame.shape\" target=\"_blank\" rel=\"noopener noreferrer\">shape<\/a>\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true \" title=\"In\">df.shape<\/pre>\n<pre class=\"toolbar:1 lang:default decode:true \" title=\"Out\">(4, 3)<\/pre>\n<p>(\u884c\u6570, \u5217\u6570)\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E7%A2%BA%E8%AA%8D%E3%81%99%E3%82%8B%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89\"><\/span>\u30c7\u30fc\u30bf\u3092\u78ba\u8a8d\u3059\u308b\u30e1\u30bd\u30c3\u30c9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u78ba\u8a8d\u3059\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u3044\u304f\u3064\u304b\u3042\u308a\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30e1\u30bd\u30c3\u30c9<\/th>\n<th>\u6a5f\u80fd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>head<\/th>\n<td style=\"text-align: center;\">\u30c7\u30fc\u30bf\u306e\u5148\u982d\u3092\u78ba\u8a8d\u3002\u5f15\u6570\u306b\u78ba\u8a8d\u3057\u305f\u3044\u30c7\u30fc\u30bf\u6570\u3092\u5165\u529b\u3001\u7701\u7565\u6642\u306f5\u3064\u8868\u793a\u3002<\/td>\n<\/tr>\n<tr>\n<th>tail<\/th>\n<td style=\"text-align: center;\">\u30c7\u30fc\u30bf\u306e\u672b\u5c3e\u3092\u78ba\u8a8d\u3002\u5f15\u6570\u306b\u78ba\u8a8d\u3057\u305f\u3044\u30c7\u30fc\u30bf\u6570\u3092\u5165\u529b\u3001\u7701\u7565\u6642\u306f5\u3064\u8868\u793a\u3002<\/td>\n<\/tr>\n<tr>\n<th>info<\/th>\n<td style=\"text-align: center;\">\u5217\u540d\u3084\u578b\u3092\u78ba\u8a8d<\/td>\n<\/tr>\n<tr>\n<th>describe<\/th>\n<td style=\"text-align: center;\">\u7d71\u8a08\u5024\u3092\u78ba\u8a8d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>head\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true \" title=\"In\">df.head()<\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-777 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_5.png\" alt=\"\" width=\"200\" height=\"159\" srcset=\"https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_5.png 348w, https:\/\/tetsumag.com\/blog\/wp-content\/uploads\/2020\/11\/python8_5-300x238.png 300w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/p>\n<p>4\u884c\u3057\u304b\u306a\u3044\u306e\u3067\u30014\u884c\u304c\u305d\u306e\u307e\u307e\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u8d64\u67a0\u306e\u7b87\u6240\u304c\u3001DataFrame\u306eIndex(\u884c\u540d)\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>CSV\u306b\u306f\u7121\u3044Index\u304c\u81ea\u52d5\u3067\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u3046\u3044\u3046\u3082\u306e\u306a\u306e\u3067\u6c17\u306b\u3057\u306a\u3044\u3067\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u4ed6\u306e\u30e1\u30bd\u30c3\u30c9\u306f\u5404\u81ea\u3067\u52d5\u304b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%83%87%E3%83%BC%E3%82%BF%E3%81%8C%E6%AC%A0%E6%90%8D%E3%81%97%E3%81%A6%E3%81%84%E3%82%8B%E5%A0%B4%E5%90%88%E3%81%AE%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF\"><\/span>\u30c7\u30fc\u30bf\u304c\u6b20\u640d\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u8aad\u307f\u8fbc\u307f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u5217\u540d\u3068\u30c7\u30fc\u30bf\u304c\u3042\u308b\u3001\u3088\u304f\u898b\u308b\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3057\u305f\u304c\u3001\u5217\u540d\u304c\u306a\u304b\u3063\u305f\u308a\u3001\u30c7\u30fc\u30bf\u306e\u958b\u59cb\u4f4d\u7f6e\u304c\u30ba\u30ec\u3066\u3044\u305f\u308a\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E5%88%97%E5%90%8D%E3%81%AE%E3%81%AA%E3%81%84%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%82%80%E3%81%AB%E3%81%AF%E5%BC%95%E6%95%B0%E3%82%92headerNone%E3%81%A8%E3%81%99%E3%82%8B\"><\/span>\u5217\u540d\u306e\u306a\u3044\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3080\u306b\u306f\u5f15\u6570\u3092header=None\u3068\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e0b\u8a18\u306e\u3088\u3046\u306a\u5217\u540d\u306e\u306a\u3044\u30c7\u30fc\u30bf\u306f\u3001<strong>header=None<\/strong>\u3068\u3059\u308b\u3053\u3068\u3067\u8aad\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-784 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/sample2.png\" alt=\"\" width=\"216\" height=\"100\" \/><\/p>\n<p><a href=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/sample2.csv\" target=\"_blank\" rel=\"noopener noreferrer\">sample2<\/a><\/p>\n<p>\u4e0a\u8a18\u30ea\u30f3\u30af\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u3001\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true \" title=\"In\">df = pd.read_csv('sample2.csv', encoding='cp932', header=None)\r\ndf.head()<\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-787 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_9.png\" alt=\"\" width=\"150\" height=\"179\" \/><\/p>\n<p>header\u306f\u5217\u540d\u306e\u958b\u59cb\u4f4d\u7f6e\u306b\u306a\u308b\u306e\u3067\u3059\u304c\u3001None\u3068\u3059\u308b\u3053\u3068\u3067\u300c\u306a\u3044\u3088\u300d\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u5217\u540d\u304c\u306a\u3044\u5834\u5408\u306f\u30010,1,2\u3068\u81ea\u52d5\u3067\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5217\u540d\u306f\u5f15\u6570\u306b<strong>names=\u5217\u540d<\/strong>\u306elist\u3092\u6e21\u3059\u3053\u3068\u3067\u5217\u540d\u3092\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"In\">df = pd.read_csv('sample2.csv', encoding='cp932', header=None, names=['\u793e\u54e1\u540d','\u793e\u54e1\u30b3\u30fc\u30c9','\u5e74\u9f62'])\r\ndf.head()<\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-782 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_8.png\" alt=\"\" width=\"200\" height=\"151\" \/><\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E9%96%8B%E5%A7%8B%E4%BD%8D%E7%BD%AE%E3%81%8C%E3%81%9A%E3%82%8C%E3%81%A6%E3%81%84%E3%82%8B%E3%83%87%E3%83%BC%E3%82%BF%E3%81%AF%E5%BC%95%E6%95%B0%E3%81%ABheader%E5%88%97%E5%90%8D%E3%81%AE%E9%96%8B%E5%A7%8B%E8%A1%8C%E6%95%B0%E3%82%92%E6%8C%87%E5%AE%9A\"><\/span>\u958b\u59cb\u4f4d\u7f6e\u304c\u305a\u308c\u3066\u3044\u308b\u30c7\u30fc\u30bf\u306f\u5f15\u6570\u306bheader=\u5217\u540d\u306e\u958b\u59cb\u884c\u6570\u3092\u6307\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u4e0b\u8a18\u306e\u3088\u3046\u306b\u3001\u884c\u6570\u3092\u305a\u3089\u3057\u3066\u8aad\u307f\u8fbc\u307f\u305f\u3044\u5834\u5408\u306f\u3001\u5f15\u6570\u306b<strong>header=\u5217\u540d\u306e\u958b\u59cb\u884c\u6570<\/strong>\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-779 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_6-300x148.png\" alt=\"\" width=\"300\" height=\"148\" \/><\/p>\n<p><a href=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/sample3.csv\">sample3<\/a><\/p>\n<p>\u4e0a\u8a18\u30ea\u30f3\u30af\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u5b9f\u884c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u884c\u6570\u306f0\u304b\u3089\u30ab\u30a6\u30f3\u30c8\u3059\u308b\u306e\u3067\u3001\u4eca\u56de\u3067\u3042\u308c\u3070\u3001header=3\u3068\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"In\">df = pd.read_csv('sample3.csv', encoding='cp932', header=3)\r\ndf.head()<\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-781 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_7.png\" alt=\"\" width=\"150\" height=\"113\" \/><\/p>\n<p>\u8aad\u307f\u8fbc\u3081\u307e\u3057\u305f\u304c\u3001\u30c7\u30fc\u30bf\u306e1\u884c\u76ee\u304c\u5217\u540d\u306b\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>4\u884c\u76ee\u306b\u5217\u540d\u304c\u3042\u308c\u3070OK\u3067\u3057\u305f\u304c\u3001\u4eca\u56de\u306e\u30c7\u30fc\u30bf\u306f\u306a\u3044\u306e\u3067\u3001\u4e00\u3064\u4e0a\u306e\u884c\u3092\u9078\u3073\u3064\u3064\u3001\u5217\u540d\u3092\u6e21\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"In\">df = pd.read_csv('sample3.csv', encoding='cp932', header=2, names=['\u793e\u54e1\u540d','\u793e\u54e1\u30b3\u30fc\u30c9','\u5e74\u9f62'])\r\ndf.head()<\/pre>\n<p>\u3053\u308c\u3067\u5217\u540d\u3092\u542b\u3093\u3060\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"%E8%AA%AD%E3%81%BF%E8%BE%BC%E3%81%BF%E5%88%97%E3%81%AE%E6%8C%87%E5%AE%9A%E3%81%97%E3%81%9F%E3%81%84%E5%A0%B4%E5%90%88%E3%81%AF%E5%BC%95%E6%95%B0%E3%81%ABusecols%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E6%8C%87%E5%AE%9A%E3%81%99%E3%82%8B\"><\/span>\u8aad\u307f\u8fbc\u307f\u5217\u306e\u6307\u5b9a\u3057\u305f\u3044\u5834\u5408\u306f\u5f15\u6570\u306busecols\u3092\u4f7f\u3063\u3066\u6307\u5b9a\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5217\u304c\u591a\u3044\u5834\u5408\u3001\u8aad\u307f\u8fbc\u307f\u305f\u3044\u5217\u3060\u3051\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><strong>usecols<\/strong>\u306e\u5f15\u6570\u3092\u4f7f\u3063\u3066\u3044\u304d\u307e\u3059\u3002csv\u306f<a href=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/sample.csv\">sample<\/a>\u3092\u8aad\u3093\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n<p><strong>usecols=\u5217\u540d\u30ea\u30b9\u30c8<\/strong>\u3092\u4e0e\u3048\u308b\u3053\u3068\u3067\u3001\u6307\u5b9a\u3057\u305f\u5217\u3060\u3051\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true \" title=\"In\">df = pd.read_csv('sample.csv', encoding='cp932', usecols=['\u793e\u54e1\u540d', '\u5e74\u9f62'])\r\ndf.head()<\/pre>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-791 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_10.png\" alt=\"\" width=\"136\" height=\"189\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"CSV%E3%81%AE%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%81%BF\"><\/span>CSV\u306e\u66f8\u304d\u8fbc\u307f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u66f8\u304d\u8fbc\u307f\u3082\u8aad\u307f\u8fbc\u307f\u3068\u540c\u69d8\u306b\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u3001header\u3001index\u306e\u6709\u7121\u3092\u5f15\u6570\u306b\u6e21\u3057\u306a\u304c\u3089\u3001\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"to_csv%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%A7%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%82%80\"><\/span>to_csv\u30e1\u30bd\u30c3\u30c9\u3067\u66f8\u304d\u8fbc\u3080<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u66f8\u304d\u8fbc\u307f\u306b\u306f<a href=\"https:\/\/pandas.pydata.org\/pandas-docs\/stable\/reference\/api\/pandas.DataFrame.to_csv.html?highlight=to_csv#pandas.DataFrame.to_csv\" target=\"_blank\" rel=\"noopener noreferrer\">to_csv<\/a>\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-796 aligncenter\" src=\"https:\/\/tetsumag.com\/wp-content\/uploads\/2020\/11\/python8_11-e1609719874836.png\" alt=\"\" width=\"500\" height=\"154\" \/><\/p>\n<p>\u30d5\u30a1\u30a4\u30eb\u30d1\u30b9\u3067\u30d5\u30a1\u30a4\u30eb\u540d\u306e\u307f\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u30b3\u30fc\u30c9\u3068\u540c\u3058\u30d5\u30a9\u30eb\u30c0\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5148\u7a0b\u3001\u5217\u540d\u3092\u6307\u5b9a\u3057\u3066\u8aad\u307f\u8fbc\u3093\u3060\u306e\u3067\u3001\u66f8\u304d\u8fbc\u3080\u524d\u306bsample.csv\u3092\u8aad\u307f\u8fbc\u3093\u3067\u304a\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true\" title=\"In\">df = pd.read_csv('sample.csv', encoding='cp932')<\/pre>\n<p>\u5f15\u6570\u306f\u8aad\u307f\u8fbc\u307f\u3068\u540c\u3058\u3067\u3001\u3088\u304f\u4f7f\u3046\u306e\u306f\u4e0b\u8a183\u3064\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5f15\u6570<\/th>\n<th>\u6a5f\u80fd<\/th>\n<th>\u521d\u671f\u5024\uff08\u7701\u7565\u6642\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>encoding<\/th>\n<td style=\"text-align: center;\">\u6587\u5b57\u30b3\u30fc\u30c9\u3092\u6307\u5b9a<\/td>\n<td style=\"text-align: center;\">utf-8<\/td>\n<\/tr>\n<tr>\n<th>header<\/th>\n<td style=\"text-align: center;\">\u5217\u540d\u3092\u66f8\u304d\u8fbc\u3080\u304b\u3069\u3046\u304b<\/td>\n<td style=\"text-align: center;\">True<br \/>\n\u7701\u7565\u6642\u306f\u5217\u540d\u304c\u3064\u304f<\/td>\n<\/tr>\n<tr>\n<th>index<\/th>\n<td style=\"text-align: center;\">\u884c\u540d\u3092\u66f8\u304d\u8fbc\u3080\u304b\u3069\u3046\u304b<\/td>\n<td style=\"text-align: center;\">True<br \/>\n\u7701\u7565\u6642\u306f\u884c\u540d\u304c\u3064\u304f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u65e5\u672c\u8a9e\u3092\u542b\u3080\u306e\u3067\u3001ecoding=&#8217;cp932&#8217;\u3067\u5217\u540d\u3042\u308a\u3001\u884c\u540d\u306a\u3057\u3067\u66f8\u304d\u8fbc\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"lang:python decode:true\">df.to_csv('output.csv', encoding='cp932', header=True, index=False)<\/pre>\n<p>\u30b3\u30fc\u30c9\u3068\u540c\u3058\u30d5\u30a9\u30eb\u30c0\u306boutput.csv\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"columns%E5%AF%BE%E8%B1%A1%E3%81%AE%E5%88%97%E5%90%8D%E3%83%AA%E3%82%B9%E3%83%88%E3%82%92%E5%BC%95%E6%95%B0%E3%81%AB%E6%8C%87%E5%AE%9A%E3%81%97%E3%81%A6%E6%9B%B8%E3%81%8D%E8%BE%BC%E3%82%80\"><\/span>columns=\u5bfe\u8c61\u306e\u5217\u540d\u30ea\u30b9\u30c8\u3092\u5f15\u6570\u306b\u6307\u5b9a\u3057\u3066\u66f8\u304d\u8fbc\u3080<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u30c7\u30fc\u30bf\u51e6\u7406\u306a\u3069\u3092\u8272\u3005\u3057\u3066\u3044\u308b\u3068\u3001\u4f59\u8a08\u306a\u5217\u304c\u3067\u304d\u3066\u3044\u304f\u305f\u3081\u3001\u5fc5\u8981\u306a\u5217\u306e\u307f\u3092\u4fdd\u5b58\u3057\u305f\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u5834\u5408\u306f\u3001<strong>columns=\u5bfe\u8c61\u306e\u5217\u540d\u30ea\u30b9\u30c8<\/strong>\u3092\u5f15\u6570\u306b\u6e21\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"toolbar:1 lang:python decode:true\" title=\"In\">df.to_csv('output.csv', encoding='cp932', header=True, index=False, columns=['\u793e\u54e1\u540d', '\u5e74\u9f62'])<\/pre>\n<p>\u5217\u304c\u7d5e\u3089\u308c\u3066\u3001\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>python\u3067\u306f\u6a5f\u68b0\u5b66\u7fd2\u3084\u30c7\u30fc\u30bf\u89e3\u6790\u3092\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001CSV\u306e\u8aad\u307f\u8fbc\u307f\u306a\u3069\u306e\u64cd\u4f5c\u306f\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>pandas\u3092\u4f7f\u7528\u3057\u305f\u8868\u30c7\u30fc\u30bf\u306e\u53d6\u308a\u6271\u3044\u306b\u6163\u308c\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>python\u3067\u306f\u6a5f\u68b0\u5b66\u7fd2\u3084\u30c7\u30fc\u30bf\u89e3\u6790\u3092\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001CSV\u306e\u8aad\u307f\u8fbc\u307f\u306a\u3069\u306e\u64cd\u4f5c\u306f\u5fc5\u9808\u3068\u306a\u308a\u307e\u3059\u3002 \u30c7\u30fc\u30bf\u8aad\u307f\u8fbc\u3081\u306a\u3051\u308c\u3070\u3001\u89e3\u6790\u3082\u3067\u304d\u306a\u3044\u306e\u3067\u3068\u3066\u3082\u5927\u4e8b\u3067\u3059\u3002 \u30c7\u30fc\u30bf\u306e\u8aad\u307f\u8fbc\u307f\u3067\u3082\u4fbf\u5229\u306apandas\u3068\u3044\u3046\u30e9\u30a4\u30d6\u30e9\u30ea\u3092 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/tetsumag.com\/blog\/2021\/01\/11\/71\/\"> <span class=\"screen-reader-text\">\u3010pandas\u3011csv\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\/\u66f8\u304d\u8fbc\u3080\u3010Python\u3011<\/span> \u3082\u3063\u3068\u8aad\u3080 &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":14224,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","_themeisle_gutenberg_block_has_review":false},"categories":[127],"tags":[95,108],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/5086"}],"collection":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/comments?post=5086"}],"version-history":[{"count":8,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/5086\/revisions"}],"predecessor-version":[{"id":14216,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/posts\/5086\/revisions\/14216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/media\/14224"}],"wp:attachment":[{"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/media?parent=5086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/categories?post=5086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tetsumag.com\/blog\/wp-json\/wp\/v2\/tags?post=5086"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}