{"id":12214,"date":"2026-09-02T01:14:31","date_gmt":"2026-09-01T16:14:31","guid":{"rendered":"https:\/\/extan.jp\/?p=12214"},"modified":"2026-10-11T01:22:40","modified_gmt":"2026-10-10T16:22:40","slug":"python%e3%81%a7%e6%96%87%e5%ad%97%e5%88%97%e3%82%92%e6%95%b0%e5%80%a4%e3%81%ab%e5%a4%89%e6%8f%9b%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%ef%bc%81","status":"publish","type":"post","link":"https:\/\/extan.jp\/?p=12214","title":{"rendered":"Python\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\uff01"},"content":{"rendered":"<p>Python\u3067CSV\u3084API\u3001\u753b\u9762\u304b\u3089\u306e\u5165\u529b\u3092\u6271\u3063\u3066\u3044\u308b\u3068\u3001**\u300c\u6570\u5b57\u306b\u898b\u3048\u308b\u306e\u306b\u6570\u5024\u3068\u3057\u3066\u4f7f\u3048\u306a\u3044\u300d**\u3068\u3044\u3046\u5834\u9762\u306b\u3088\u304f\u51fa\u4f1a\u3044\u307e\u3059\u3002<\/p>\n<p>\u305d\u3093\u306a\u3068\u304d\u306b\u56f0\u308b\u3053\u3068\u306f\u3001<\/p>\n<div class=\"kininarukoto1\">\u30fbint()\u3084float()\u3067\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u5148\u306b\u9032\u3081\u306a\u3044<br \/>\n\u30fb&#8221;1,234&#8243;\u306e\u3088\u3046\u306b\u30ab\u30f3\u30de\u304c\u5165\u3063\u305f\u91d1\u984d\u3092\u5909\u63db\u3067\u304d\u306a\u3044<br \/>\n\u30fb\u6587\u5b57\u5217\u304b\u6570\u5024\u304b\u306e\u5224\u5b9a\u3092\u3069\u3046\u66f8\u3051\u3070\u3044\u3044\u304b\u5206\u304b\u3089\u306a\u3044<\/div>\n<p>\u3067\u3059\u306d\u3002<\/p>\n<p>\u30a8\u30e9\u30fc\u6587\u3092\u8aad\u3093\u3067\u3082\u300cinvalid literal for int()\u300d\u3068\u3057\u304b\u51fa\u306a\u3044\u306e\u3067\u3001\u539f\u56e0\u304c\u5206\u304b\u3089\u305a\u6b62\u307e\u3063\u3066\u3057\u307e\u3046\u65b9\u3082\u591a\u3044\u3067\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u4eca\u56de\u306f\u3001**\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u57fa\u672c\u304b\u3089\u3001\u30a8\u30e9\u30fc\u306b\u306a\u308b\u539f\u56e0\u306e\u898b\u5206\u3051\u65b9\u3001\u5b9f\u52d9\u3067\u306e\u5bfe\u51e6\u6cd5**\u307e\u3067\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n<div class=\"rdinfo\">\u30fbint()\u3068float()\u306e\u57fa\u672c<br \/>\n\u30fb\u30a8\u30e9\u30fc\u306b\u306a\u308b6\u3064\u306e\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<br \/>\n\u30fbisdigit()\u304c\u4f7f\u3048\u306a\u3044\u7406\u7531<br \/>\n\u30fb\u91d1\u984d\u3092\u6271\u3046\u3068\u304d\u306eDecimal<br \/>\n\u30fb\u5b9f\u52d9\u30d1\u30bf\u30fc\u30f3\uff08CSV\u306e\u5408\u8a08\uff09<\/div>\n<p>\u4eca\u56de\u306f\u3001\u3053\u308c\u3089\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u307e\u3059\uff01<\/p>\n<div class=\"c_box intitle pink_box\"><div class=\"box_title\"><span>POINT<\/span><\/div>\n\u30fb\u6574\u6570\u306f int()\u3001\u5c0f\u6570\u306f float() \u3092\u4f7f\u3046\uff08\u8ff7\u3063\u305f\u3089 float() \u3067\u78ba\u8a8d\uff09<br \/>\n\u30fb**\u5168\u89d2\u6570\u5b57\u300c\uff11\uff12\uff13\u300d\u306f int() \u3067\u305d\u306e\u307e\u307e\u5909\u63db\u3067\u304d\u308b**\uff08\u305f\u3060\u3057\u5168\u89d2\u306e\u5c0f\u6570\u70b9\u300c\uff0e\u300d\u306f\u30a8\u30e9\u30fc\uff09<br \/>\n\u30fb\u5909\u63db\u3067\u304d\u306a\u3044\u3068\u304d\u306f ValueError\u3001\u5024\u304c None \u306e\u3068\u304d\u306f TypeError \u306b\u306a\u308b<br \/>\n\u30fb**isdigit() \u306f\u5224\u5b9a\u306b\u4f7f\u3048\u306a\u3044**\uff08True \u3067\u3082\u5931\u6557\u3059\u308b\uff0fFalse \u3067\u3082\u6210\u529f\u3059\u308b\u30b1\u30fc\u30b9\u304c\u3042\u308b\uff09<br \/>\n\u30fb\u91d1\u984d\u306e\u8a08\u7b97\u306f float \u3067\u306f\u306a\u304f **Decimal** \u3092\u4f7f\u3046<br \/>\n<\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u3082\u304f\u3058<\/p>\n<span class=\"ez-toc-title-toggle\"><\/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:\/\/extan.jp\/?p=12214\/#%E5%AE%8C%E6%88%90%E3%82%A4%E3%83%A1%E3%83%BC%E3%82%B8\" >\u5b8c\u6210\u30a4\u30e1\u30fc\u30b8<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/extan.jp\/?p=12214\/#%E5%9F%BA%E6%9C%AC%EF%BC%9Aint_%E3%81%A8_float_%E3%82%92%E4%BD%BF%E3%81%86\" >\u57fa\u672c\uff1aint() \u3068 float() \u3092\u4f7f\u3046<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/extan.jp\/?p=12214\/#%E3%81%9D%E3%81%AE%E3%81%BE%E3%81%BE%E5%A4%89%E6%8F%9B%E3%81%A7%E3%81%8D%E3%82%8B%E6%9B%B8%E3%81%8D%E6%96%B9%EF%BC%88%E6%97%A9%E8%A6%8B%E8%A1%A8%EF%BC%89\" >\u305d\u306e\u307e\u307e\u5909\u63db\u3067\u304d\u308b\u66f8\u304d\u65b9\uff08\u65e9\u898b\u8868\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/extan.jp\/?p=12214\/#%E5%9F%BA%E6%95%B0%E3%82%92%E6%8C%87%E5%AE%9A%E3%81%99%E3%82%8B%E3%81%A816%E9%80%B2%E6%95%B0%E3%83%BB2%E9%80%B2%E6%95%B0%E3%82%82%E5%A4%89%E6%8F%9B%E3%81%A7%E3%81%8D%E3%82%8B\" >\u57fa\u6570\u3092\u6307\u5b9a\u3059\u308b\u306816\u9032\u6570\u30fb2\u9032\u6570\u3082\u5909\u63db\u3067\u304d\u308b<\/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:\/\/extan.jp\/?p=12214\/#%E3%82%A8%E3%83%A9%E3%83%BC%E3%81%AB%E3%81%AA%E3%82%8B6%E3%81%A4%E3%81%AE%E5%8E%9F%E5%9B%A0%E3%81%A8%E5%AF%BE%E5%87%A6%E6%B3%95\" >\u30a8\u30e9\u30fc\u306b\u306a\u308b6\u3064\u306e\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<\/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:\/\/extan.jp\/?p=12214\/#%E2%91%A0_%E6%95%B0%E5%AD%97%E4%BB%A5%E5%A4%96%E3%81%AE%E6%96%87%E5%AD%97%E3%81%8C%E5%85%A5%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B\" >\u2460 \u6570\u5b57\u4ee5\u5916\u306e\u6587\u5b57\u304c\u5165\u3063\u3066\u3044\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/extan.jp\/?p=12214\/#%E2%91%A1_%E5%B0%8F%E6%95%B0%E7%82%B9%E3%81%8C%E5%85%A5%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B%E3%81%AE%E3%81%AB_int_%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%9F\" >\u2461 \u5c0f\u6570\u70b9\u304c\u5165\u3063\u3066\u3044\u308b\u306e\u306b int() \u3092\u4f7f\u3063\u305f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/extan.jp\/?p=12214\/#%E2%91%A2_%E3%82%AB%E3%83%B3%E3%83%9E%E3%82%84%E9%80%9A%E8%B2%A8%E8%A8%98%E5%8F%B7%E3%81%8C%E5%85%A5%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B\" >\u2462 \u30ab\u30f3\u30de\u3084\u901a\u8ca8\u8a18\u53f7\u304c\u5165\u3063\u3066\u3044\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/extan.jp\/?p=12214\/#%E2%91%A3_%E5%85%A8%E8%A7%92%E6%95%B0%E5%AD%97%E3%83%BB%E5%85%A8%E8%A7%92%E8%A8%98%E5%8F%B7%E3%81%8C%E6%B7%B7%E3%81%98%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B\" >\u2463 \u5168\u89d2\u6570\u5b57\u30fb\u5168\u89d2\u8a18\u53f7\u304c\u6df7\u3058\u3063\u3066\u3044\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/extan.jp\/?p=12214\/#%E2%91%A4_%E7%A9%BA%E6%96%87%E5%AD%97%E3%82%84%E7%A9%BA%E7%99%BD%E3%81%A0%E3%81%91\" >\u2464 \u7a7a\u6587\u5b57\u3084\u7a7a\u767d\u3060\u3051<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/extan.jp\/?p=12214\/#%E2%91%A5_%E5%80%A4%E3%81%8C_None%EF%BC%88TypeError_%E3%81%AB%E3%81%AA%E3%82%8B%EF%BC%89\" >\u2465 \u5024\u304c None\uff08TypeError \u306b\u306a\u308b\uff09<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/extan.jp\/?p=12214\/#%E5%88%A4%E5%AE%9A%E3%81%AB%E4%BD%BF%E3%81%88%E3%82%8B%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%AF%E3%81%82%E3%82%8B%EF%BC%9F%EF%BC%88isdigit_%E3%81%AF%E4%BD%BF%E3%81%88%E3%81%BE%E3%81%9B%E3%82%93%EF%BC%89\" >\u5224\u5b9a\u306b\u4f7f\u3048\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u3042\u308b\uff1f\uff08isdigit() \u306f\u4f7f\u3048\u307e\u305b\u3093\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/extan.jp\/?p=12214\/#%E9%87%91%E9%A1%8D%E3%82%92%E6%89%B1%E3%81%86%E3%81%A8%E3%81%8D%E3%81%AF_Decimal_%E3%82%92%E4%BD%BF%E3%81%86\" >\u91d1\u984d\u3092\u6271\u3046\u3068\u304d\u306f Decimal \u3092\u4f7f\u3046<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/extan.jp\/?p=12214\/#%E5%A4%89%E6%8F%9B%E3%81%AE%E6%B5%81%E3%82%8C%EF%BC%88%E5%9B%B3%E3%81%A7%E7%A2%BA%E8%AA%8D%EF%BC%89\" >\u5909\u63db\u306e\u6d41\u308c\uff08\u56f3\u3067\u78ba\u8a8d\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/extan.jp\/?p=12214\/#%E5%AE%9F%E5%8B%99%E3%83%91%E3%82%BF%E3%83%BC%E3%83%B3%EF%BC%9ACSV%E3%81%AE%E9%87%91%E9%A1%8D%E3%82%92%E5%90%88%E8%A8%88%E3%81%99%E3%82%8B\" >\u5b9f\u52d9\u30d1\u30bf\u30fc\u30f3\uff1aCSV\u306e\u91d1\u984d\u3092\u5408\u8a08\u3059\u308b<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/extan.jp\/?p=12214\/#%E3%82%88%E3%81%8F%E3%81%82%E3%82%8B%E9%96%93%E9%81%95%E3%81%84\" >\u3088\u304f\u3042\u308b\u9593\u9055\u3044<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/extan.jp\/?p=12214\/#%E3%82%A8%E3%82%AF%E7%9F%AD%E6%B5%81%EF%BC%9AExcel%E3%81%AE%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92Python%E3%81%A7%E8%AA%AD%E3%82%80%E3%81%A8%E3%81%8D%E3%81%AE%E6%B3%A8%E6%84%8F\" >\u30a8\u30af\u77ed\u6d41\uff1aExcel\u306e\u30c7\u30fc\u30bf\u3092Python\u3067\u8aad\u3080\u3068\u304d\u306e\u6ce8\u610f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/extan.jp\/?p=12214\/#%E3%81%95%E3%81%84%E3%81%94%E3%81%AB\" >\u3055\u3044\u3054\u306b<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E5%AE%8C%E6%88%90%E3%82%A4%E3%83%A1%E3%83%BC%E3%82%B8\"><\/span>\u5b8c\u6210\u30a4\u30e1\u30fc\u30b8<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u57fa\u672c\u306e\u5909\u63db\u3068\u3001\u3064\u307e\u305a\u304d\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3092\u307e\u3068\u3081\u305f\u5b9f\u884c\u7d50\u679c\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"images\/00112\/01_goal.png\" alt=\"Python\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3057\u305f\u5b9f\u884c\u7d50\u679c\" \/><br \/>\n\u300c123\u300d\u306f\u305d\u306e\u307e\u307e\u3001\u300c1,234\u300d\u306f\u30ab\u30f3\u30de\u3092\u53d6\u3063\u3066\u304b\u3089\u3001\u3068\u3044\u3046\u3088\u3046\u306b**\u524d\u51e6\u7406\u3092\u631f\u3080\u306e\u304c\u30dd\u30a4\u30f3\u30c8**\u3067\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%9F%BA%E6%9C%AC%EF%BC%9Aint_%E3%81%A8_float_%E3%82%92%E4%BD%BF%E3%81%86\"><\/span>\u57fa\u672c\uff1aint() \u3068 float() \u3092\u4f7f\u3046<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u3059\u308b\u306b\u306f\u3001\u6574\u6570\u306a\u3089 <strong>int()<\/strong>\u3001\u5c0f\u6570\u306a\u3089 <strong>float()<\/strong> \u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">s = &quot;123&quot;\nn = int(s)\nprint(n)          # 123\nprint(type(n))    # &lt;class &#039;int&#039;&gt;\n\nf = float(&quot;123.45&quot;)\nprint(f)          # 123.45\nprint(type(f))    # &lt;class &#039;float&#039;&gt;<\/code><\/pre>\n<p>\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u3059\u308b\u3068\u3001<strong>\u8db3\u3057\u7b97\u3084\u6bd4\u8f03\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059<\/strong>\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">a = &quot;10&quot;\nb = &quot;20&quot;\n\nprint(a + b)              # 1020\uff08\u6587\u5b57\u5217\u306e\u9023\u7d50\u306b\u306a\u3063\u3066\u3057\u307e\u3046\uff09\nprint(int(a) + int(b))    # 30\uff08\u6570\u5024\u306e\u8db3\u3057\u7b97\uff09<\/code><\/pre>\n<p>\u300c\u306a\u305c\u304b 1020 \u306b\u306a\u3063\u305f\u300d\u3068\u3044\u3046\u306e\u306f\u3001\u5909\u63db\u3092\u5fd8\u308c\u305f\u3068\u304d\u306b\u8d77\u304d\u308b\u5b9a\u756a\u306e\u30df\u30b9\u3067\u3059\u306d\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E3%81%9D%E3%81%AE%E3%81%BE%E3%81%BE%E5%A4%89%E6%8F%9B%E3%81%A7%E3%81%8D%E3%82%8B%E6%9B%B8%E3%81%8D%E6%96%B9%EF%BC%88%E6%97%A9%E8%A6%8B%E8%A1%A8%EF%BC%89\"><\/span>\u305d\u306e\u307e\u307e\u5909\u63db\u3067\u304d\u308b\u66f8\u304d\u65b9\uff08\u65e9\u898b\u8868\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<table>\n<thead>\n<tr>\n<th>\u6587\u5b57\u5217<\/th>\n<th>int()<\/th>\n<th>float()<\/th>\n<th>\u30dd\u30a4\u30f3\u30c8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>&#8220;123&#8221;<\/td>\n<td><strong>123<\/strong><\/td>\n<td>123.0<\/td>\n<td>\u3075\u3064\u3046\u306e\u6570\u5b57<\/td>\n<\/tr>\n<tr>\n<td>&#8221; 123 &#8220;<\/td>\n<td><strong>123<\/strong><\/td>\n<td>123.0<\/td>\n<td>\u524d\u5f8c\u306e\u7a7a\u767d\u306f\u81ea\u52d5\u3067\u7121\u8996\u3055\u308c\u308b<\/td>\n<\/tr>\n<tr>\n<td>&#8220;+5&#8221; \/ &#8220;-5&#8221;<\/td>\n<td><strong>5 \/ -5<\/strong><\/td>\n<td>5.0 \/ -5.0<\/td>\n<td>\u7b26\u53f7\u3082OK<\/td>\n<\/tr>\n<tr>\n<td>&#8220;1_000&#8221;<\/td>\n<td><strong>1000<\/strong><\/td>\n<td>1000.0<\/td>\n<td>\u30a2\u30f3\u30c0\u30fc\u30b9\u30b3\u30a2\u533a\u5207\u308a\u3082OK<\/td>\n<\/tr>\n<tr>\n<td>&#8220;000123&#8221;<\/td>\n<td><strong>123<\/strong><\/td>\n<td>123.0<\/td>\n<td>\u5148\u982d\u306e0\u306f\u7121\u8996<\/td>\n<\/tr>\n<tr>\n<td>&#8220;1e3&#8221;<\/td>\n<td>\u30a8\u30e9\u30fc<\/td>\n<td><strong>1000.0<\/strong><\/td>\n<td>\u6307\u6570\u8868\u8a18\u306ffloat\u306e\u307f<\/td>\n<\/tr>\n<tr>\n<td>&#8220;.5&#8221; \/ &#8220;5.&#8221;<\/td>\n<td>\u30a8\u30e9\u30fc<\/td>\n<td><strong>0.5 \/ 5.0<\/strong><\/td>\n<td>\u5c0f\u6570\u70b9\u306e\u524d\u5f8c\u306f\u7701\u7565\u53ef<\/td>\n<\/tr>\n<tr>\n<td>&#8220;nan&#8221; \/ &#8220;inf&#8221;<\/td>\n<td>\u30a8\u30e9\u30fc<\/td>\n<td><strong>nan \/ inf<\/strong><\/td>\n<td>\u7279\u6b8a\u306a\u5024\u3082float\u306a\u3089\u901a\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3><span class=\"ez-toc-section\" id=\"%E5%9F%BA%E6%95%B0%E3%82%92%E6%8C%87%E5%AE%9A%E3%81%99%E3%82%8B%E3%81%A816%E9%80%B2%E6%95%B0%E3%83%BB2%E9%80%B2%E6%95%B0%E3%82%82%E5%A4%89%E6%8F%9B%E3%81%A7%E3%81%8D%E3%82%8B\"><\/span>\u57fa\u6570\u3092\u6307\u5b9a\u3059\u308b\u306816\u9032\u6570\u30fb2\u9032\u6570\u3082\u5909\u63db\u3067\u304d\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u7b2c2\u5f15\u6570\u306b\u57fa\u6570\u3092\u6e21\u3059\u3068\u300110\u9032\u6570\u4ee5\u5916\u3082\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">print(int(&quot;1A&quot;, 16))      # 26\uff0816\u9032\u6570\uff09\nprint(int(&quot;0x1A&quot;, 16))    # 26\uff080x \u304c\u4ed8\u3044\u3066\u3044\u3066\u3082OK\uff09\nprint(int(&quot;1010&quot;, 2))     # 10\uff082\u9032\u6570\uff09\nprint(int(&quot;77&quot;, 8))       # 63\uff088\u9032\u6570\uff09<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"%E3%82%A8%E3%83%A9%E3%83%BC%E3%81%AB%E3%81%AA%E3%82%8B6%E3%81%A4%E3%81%AE%E5%8E%9F%E5%9B%A0%E3%81%A8%E5%AF%BE%E5%87%A6%E6%B3%95\"><\/span>\u30a8\u30e9\u30fc\u306b\u306a\u308b6\u3064\u306e\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u307e\u305a\u306f\u5168\u4f53\u50cf\u3067\u3059\u3002<\/p>\n<img decoding=\"async\" src=\"images\/00112\/03_causes.png\" alt=\"int()\u304c\u30a8\u30e9\u30fc\u306b\u306a\u308b\u539f\u56e0\u3068\u5bfe\u51e6\" \/>\n<h3><span class=\"ez-toc-section\" id=\"%E2%91%A0_%E6%95%B0%E5%AD%97%E4%BB%A5%E5%A4%96%E3%81%AE%E6%96%87%E5%AD%97%E3%81%8C%E5%85%A5%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B\"><\/span>\u2460 \u6570\u5b57\u4ee5\u5916\u306e\u6587\u5b57\u304c\u5165\u3063\u3066\u3044\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>ValueError: invalid literal for int() with base 10: &#8216;abc&#8217;<\/strong><\/p>\n<p>\u300cbase 10\u300d\u306f\u300c10\u9032\u6570\u3068\u3057\u3066\u8aad\u3081\u306a\u304b\u3063\u305f\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E2%91%A1_%E5%B0%8F%E6%95%B0%E7%82%B9%E3%81%8C%E5%85%A5%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B%E3%81%AE%E3%81%AB_int_%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%9F\"><\/span>\u2461 \u5c0f\u6570\u70b9\u304c\u5165\u3063\u3066\u3044\u308b\u306e\u306b int() \u3092\u4f7f\u3063\u305f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">print(int(&quot;1.0&quot;))          # \u30a8\u30e9\u30fc\nprint(int(float(&quot;1.0&quot;)))   # 1\uff08\u4e00\u5ea6float\u306b\u3057\u3066\u304b\u3089int\u3078\uff09<\/code><\/pre>\n<p>\u300c1.0\u300d\u306f\u6574\u6570\u306b\u898b\u3048\u307e\u3059\u304c\u3001int() \u306f\u5c0f\u6570\u70b9\u3092\u53d7\u3051\u4ed8\u3051\u307e\u305b\u3093\u3002<strong>int(float(s))<\/strong> \u306e\u9806\u3067\u5909\u63db\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E2%91%A2_%E3%82%AB%E3%83%B3%E3%83%9E%E3%82%84%E9%80%9A%E8%B2%A8%E8%A8%98%E5%8F%B7%E3%81%8C%E5%85%A5%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B\"><\/span>\u2462 \u30ab\u30f3\u30de\u3084\u901a\u8ca8\u8a18\u53f7\u304c\u5165\u3063\u3066\u3044\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>CSV\u3084Excel\u304b\u3089\u6301\u3063\u3066\u304d\u305f\u91d1\u984d\u306f\u3001\u3053\u306e\u5f62\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">s = &quot;\u00a51,234&quot;\n\ns = s.replace(&quot;\u00a5&quot;, &quot;&quot;).replace(&quot;,&quot;, &quot;&quot;)   # \u8a18\u53f7\u3068\u30ab\u30f3\u30de\u3092\u53d6\u308b\nprint(int(s))                             # 1234<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E2%91%A3_%E5%85%A8%E8%A7%92%E6%95%B0%E5%AD%97%E3%83%BB%E5%85%A8%E8%A7%92%E8%A8%98%E5%8F%B7%E3%81%8C%E6%B7%B7%E3%81%98%E3%81%A3%E3%81%A6%E3%81%84%E3%82%8B\"><\/span>\u2463 \u5168\u89d2\u6570\u5b57\u30fb\u5168\u89d2\u8a18\u53f7\u304c\u6df7\u3058\u3063\u3066\u3044\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>\u3053\u3053\u306f\u8aa4\u89e3\u3055\u308c\u3084\u3059\u3044\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002\u5168\u89d2\u6570\u5b57\u300c\uff11\uff12\uff13\u300d\u306f int() \u3067\u305d\u306e\u307e\u307e\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/strong><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">print(int(&quot;\uff11\uff12\uff13&quot;))          # 123\uff08\u5168\u89d2\u3067\u3082\u901a\u308b\uff09\nprint(float(&quot;\uff11\uff12\uff13&quot;))        # 123.0\nprint(float(&quot;\uff11\uff12\uff13.\uff14\uff15&quot;))   # 123.45\uff08\u5168\u89d2\u6570\u5b57\uff0b\u534a\u89d2\u306e\u5c0f\u6570\u70b9\uff09\nprint(float(&quot;\uff11\uff12\uff13\uff0e\uff14\uff15&quot;))  # \u30a8\u30e9\u30fc\uff08\u5168\u89d2\u306e\u5c0f\u6570\u70b9\u300c\uff0e\u300d\uff09<\/code><\/pre>\n<p>\u6570\u5b57\u306f\u5909\u63db\u3067\u304d\u3066\u3082\u3001<strong>\u5168\u89d2\u306e\u5c0f\u6570\u70b9\u300c\uff0e\u300d\u3084\u5168\u89d2\u30ab\u30f3\u30de\u300c\uff0c\u300d\u306f\u30a8\u30e9\u30fc<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u5168\u89d2\u3092\u534a\u89d2\u306b\u305d\u308d\u3048\u305f\u3044\u3068\u304d\u306f\u3001NFKC\u6b63\u898f\u5316\u304c\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">import unicodedata\n\ns = unicodedata.normalize(&quot;NFKC&quot;, &quot;\uff11\uff12\uff13\uff0e\uff14\uff15&quot;)\nprint(s)            # 123.45\uff08\u5168\u89d2\u304c\u534a\u89d2\u306b\u306a\u308b\uff09\nprint(float(s))     # 123.45<\/code><\/pre>\n<h3><span class=\"ez-toc-section\" id=\"%E2%91%A4_%E7%A9%BA%E6%96%87%E5%AD%97%E3%82%84%E7%A9%BA%E7%99%BD%E3%81%A0%E3%81%91\"><\/span>\u2464 \u7a7a\u6587\u5b57\u3084\u7a7a\u767d\u3060\u3051<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">print(int(&quot;&quot;))       # \u30a8\u30e9\u30fc\nprint(int(&quot;   &quot;))    # \u30a8\u30e9\u30fc\nprint(float(&quot;&quot;))     # \u30a8\u30e9\u30fc<\/code><\/pre>\n<p>CSV\u306e\u7a7a\u6b04\u306f\u3053\u308c\u306b\u5f53\u305f\u308a\u307e\u3059\u3002<strong>strip() \u3067\u7a7a\u767d\u3092\u53d6\u3063\u3066\u304b\u3089\u3001\u7a7a\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a<\/strong>\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E2%91%A5_%E5%80%A4%E3%81%8C_None%EF%BC%88TypeError_%E3%81%AB%E3%81%AA%E3%82%8B%EF%BC%89\"><\/span>\u2465 \u5024\u304c None\uff08TypeError \u306b\u306a\u308b\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>TypeError: int() argument must be a string, a bytes-like object or a real number, not &#8216;NoneType&#8217;<\/strong><\/p>\n<p>JSON\u3084\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u6765\u305f\u5024\u304c None \u306e\u3068\u304d\u306b\u8d77\u304d\u307e\u3059\u3002<strong>ValueError \u3067\u306f\u306a\u304f TypeError<\/strong> \u306a\u306e\u3067\u3001except\u306e\u66f8\u304d\u65b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">try:\n    n = int(value)\nexcept (ValueError, TypeError):     # \u4e21\u65b9\u307e\u3068\u3081\u3066\u53d7\u3051\u308b\n    n = 0<\/code><\/pre>\n<div class=\"c_box intitle pink_box\"><div class=\"box_title\"><span>POINT<\/span><\/div>\n\u30fb\u30a8\u30e9\u30fc\u306e\u7a2e\u985e\u3067\u539f\u56e0\u304c\u5206\u304b\u308b\uff1aValueError\uff1d\u6587\u5b57\u5217\u306e\u4e2d\u8eab\u306e\u554f\u984c\uff0fTypeError\uff1d\u305d\u3082\u305d\u3082\u6587\u5b57\u5217\u3067\u306f\u306a\u3044<br \/>\n\u30fb\u300cbase 10\u300d\u3068\u51fa\u305f\u308910\u9032\u6570\u3068\u3057\u3066\u8aad\u3081\u306a\u3044\u6587\u5b57\u304c\u6df7\u3058\u3063\u3066\u3044\u308b<br \/>\n\u30fb\u6570\u5024\u306e\u524d\u51e6\u7406\u306f\u300c\u8a18\u53f7\u3092\u53d6\u308b\u2192\u5168\u89d2\u3092\u534a\u89d2\u306b\u3059\u308b\u2192\u7a7a\u767d\u3092\u53d6\u308b\u300d\u306e\u9806\u3067<br \/>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E5%88%A4%E5%AE%9A%E3%81%AB%E4%BD%BF%E3%81%88%E3%82%8B%E3%83%A1%E3%82%BD%E3%83%83%E3%83%89%E3%81%AF%E3%81%82%E3%82%8B%EF%BC%9F%EF%BC%88isdigit_%E3%81%AF%E4%BD%BF%E3%81%88%E3%81%BE%E3%81%9B%E3%82%93%EF%BC%89\"><\/span>\u5224\u5b9a\u306b\u4f7f\u3048\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u3042\u308b\uff1f\uff08isdigit() \u306f\u4f7f\u3048\u307e\u305b\u3093\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u300c\u5909\u63db\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u3092\u5148\u306b\u5224\u5b9a\u3057\u305f\u3044\u300d\u3068\u8003\u3048\u3066 <strong>isdigit()<\/strong> \u3092\u4f7f\u3046\u65b9\u304c\u591a\u3044\u306e\u3067\u3059\u304c\u3001**\u3053\u308c\u306f\u5371\u967a\u3067\u3059\u3002**<\/p>\n<img decoding=\"async\" src=\"images\/00112\/04_isdigit.png\" alt=\"isdigit()\u304c\u5224\u5b9a\u306b\u4f7f\u3048\u306a\u3044\u7406\u7531\" \/>\n<table>\n<thead>\n<tr>\n<th>\u5224\u5b9a<\/th>\n<th>isdigit() \u306e\u7d50\u679c<\/th>\n<th>int() \u306e\u7d50\u679c<\/th>\n<th>\u5224\u5b9a\u3068\u4e00\u81f4\u3059\u308b\uff1f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>&#8220;123&#8221;.isdigit()<\/td>\n<td>True<\/td>\n<td>\u6210\u529f<\/td>\n<td>\u4e00\u81f4<\/td>\n<\/tr>\n<tr>\n<td>&#8220;-5&#8221;.isdigit()<\/td>\n<td><strong>False<\/strong><\/td>\n<td><strong>\u6210\u529f<\/strong><\/td>\n<td><strong>\u30ba\u30ec\u308b<\/strong><\/td>\n<\/tr>\n<tr>\n<td>&#8221;  12  &#8220;.isdigit()<\/td>\n<td><strong>False<\/strong><\/td>\n<td><strong>\u6210\u529f<\/strong><\/td>\n<td><strong>\u30ba\u30ec\u308b<\/strong><\/td>\n<\/tr>\n<tr>\n<td>&#8220;\u00b2&#8221;.isdigit()<\/td>\n<td><strong>True<\/strong><\/td>\n<td><strong>\u5931\u6557<\/strong><\/td>\n<td><strong>\u30ba\u30ec\u308b<\/strong><\/td>\n<\/tr>\n<tr>\n<td>&#8220;\u00bd&#8221;.isdigit()<\/td>\n<td><strong>True<\/strong><\/td>\n<td><strong>\u5931\u6557<\/strong><\/td>\n<td><strong>\u30ba\u30ec\u308b<\/strong><\/td>\n<\/tr>\n<tr>\n<td>&#8220;1.5&#8221;.isdigit()<\/td>\n<td>False<\/td>\n<td>\u5931\u6557<\/td>\n<td>\u4e00\u81f4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>isdigit() \u304c False \u3067\u3082\u5909\u63db\u3067\u304d\u308b\u3082\u306e\u304c\u3042\u308a\u3001True \u3067\u3082\u5931\u6557\u3059\u308b\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/strong><\/p>\n<p>\u7406\u7531\u306f\u3001isdigit() \u304c\u300c\u6587\u5b57\u304c\u6570\u5b57\u304b\u3069\u3046\u304b\u300d\u3092\u898b\u3066\u3044\u308b\u3060\u3051\u3067\u3001<strong>\u7b26\u53f7\u30fb\u7a7a\u767d\u30fb\u5c0f\u6570\u70b9\u30fb\u5909\u63db\u53ef\u5426\u3092\u898b\u3066\u3044\u306a\u3044<\/strong>\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>3\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u306e\u9055\u3044\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30e1\u30bd\u30c3\u30c9<\/th>\n<th>\u5224\u5b9a\u3059\u308b\u3082\u306e<\/th>\n<th>&#8220;\u00b2&#8221;<\/th>\n<th>&#8220;\u00bd&#8221;<\/th>\n<th>&#8220;\u4e00&#8221;<\/th>\n<th>int()\u306e\u53ef\u5426\u3068\u4e00\u81f4\u3059\u308b\uff1f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>isdecimal()<\/strong><\/td>\n<td>10\u9032\u6570\u306e\u6570\u5b57<\/td>\n<td>False<\/td>\n<td>False<\/td>\n<td>False<\/td>\n<td>\u3044\u3061\u3070\u3093\u8fd1\u3044<\/td>\n<\/tr>\n<tr>\n<td><strong>isdigit()<\/strong><\/td>\n<td>\u6570\u5b57\uff08\u4e0a\u4ed8\u304d\u542b\u3080\uff09<\/td>\n<td><strong>True<\/strong><\/td>\n<td>False<\/td>\n<td>False<\/td>\n<td>\u30ba\u30ec\u308b<\/td>\n<\/tr>\n<tr>\n<td><strong>isnumeric()<\/strong><\/td>\n<td>\u6570\u5024\uff08\u6f22\u6570\u5b57\u542b\u3080\uff09<\/td>\n<td>True<\/td>\n<td><strong>True<\/strong><\/td>\n<td><strong>True<\/strong><\/td>\n<td>\u30ba\u30ec\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u7d50\u8ad6\uff1a\u5224\u5b9a\u305b\u305a\u306b\u3001try\/except \u3067\u66f8\u304f\u306e\u304c\u6b63\u89e3\u3067\u3059\u3002<\/strong><\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">def to_int(s, default=0):\n    &quot;&quot;&quot;\u6587\u5b57\u5217\u3092\u6574\u6570\u306b\u3059\u308b\u3002\u5909\u63db\u3067\u304d\u306a\u3051\u308c\u3070 default \u3092\u8fd4\u3059\u3002&quot;&quot;&quot;\n    if s is None:\n        return default                      # None \u306f\u5148\u306b\u5f3e\u304f\n    try:\n        return int(str(s).replace(&quot;,&quot;, &quot;&quot;).strip())\n    except ValueError:\n        return default<\/code><\/pre>\n<p>\u3053\u306e\u5f62\u306a\u3089\u3001\u5224\u5b9a\u306e\u30ba\u30ec\u3092\u6c17\u306b\u305b\u305a\u5b89\u5168\u306b\u5909\u63db\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E9%87%91%E9%A1%8D%E3%82%92%E6%89%B1%E3%81%86%E3%81%A8%E3%81%8D%E3%81%AF_Decimal_%E3%82%92%E4%BD%BF%E3%81%86\"><\/span>\u91d1\u984d\u3092\u6271\u3046\u3068\u304d\u306f Decimal \u3092\u4f7f\u3046<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5c0f\u6570\u3092 float \u3067\u8a08\u7b97\u3059\u308b\u3068\u3001**\u308f\u305a\u304b\u306a\u8aa4\u5dee**\u304c\u6b8b\u308a\u307e\u3059\u3002<\/p>\n<img decoding=\"async\" src=\"images\/00112\/05_float.png\" alt=\"float\u306e\u8aa4\u5dee\u3068Decimal\" \/>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">print(0.1 + 0.2)          # 0.30000000000000004\n\nfrom decimal import Decimal\nprint(Decimal(&quot;0.1&quot;) + Decimal(&quot;0.2&quot;))    # 0.3<\/code><\/pre>\n<p>\u91d1\u984d\u306e\u5408\u8a08\u304c1\u5186\u305a\u308c\u308b\u539f\u56e0\u306b\u306a\u308b\u306e\u3067\u3001<strong>\u304a\u91d1\u306e\u8a08\u7b97\u306fDecimal<\/strong>\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><strong>Decimal \u306f\u300c\u6587\u5b57\u5217\u300d\u304b\u3089\u4f5c\u308b<\/strong>\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002Decimal(0.1) \u3068\u66f8\u304f\u3068\u3001\u8aa4\u5dee\u3092\u6301\u3063\u305f\u307e\u307e\u53d6\u308a\u8fbc\u307e\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">from decimal import Decimal\n\nprint(Decimal(0.1))       # 0.1000000000000000055511151231257827021181583404541015625\nprint(Decimal(&quot;0.1&quot;))     # 0.1\n\n# \u56db\u6368\u4e94\u5165\u3082 round() \u3067\u306f\u306a\u304f quantize \u3092\u4f7f\u3046\nprint(round(1.005, 2))                          # 1.0\uff08\u8aa4\u5dee\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\uff09\nprint(Decimal(&quot;1.005&quot;).quantize(Decimal(&quot;0.01&quot;)))   # 1.00<\/code><\/pre>\n<h2><span class=\"ez-toc-section\" id=\"%E5%A4%89%E6%8F%9B%E3%81%AE%E6%B5%81%E3%82%8C%EF%BC%88%E5%9B%B3%E3%81%A7%E7%A2%BA%E8%AA%8D%EF%BC%89\"><\/span>\u5909\u63db\u306e\u6d41\u308c\uff08\u56f3\u3067\u78ba\u8a8d\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" src=\"images\/00112\/02_flow.png\" alt=\"\u6587\u5b57\u5217\u304b\u3089\u6570\u5024\u3078\u306e\u5909\u63db\u30d5\u30ed\u30fc\" \/><br \/>\n\u300c\u5909\u63db\u3057\u3066\u307f\u308b \u2192 \u30c0\u30e1\u306a\u3089\u524d\u51e6\u7406\u300d\u306e\u9806\u3067\u8003\u3048\u308b\u3068\u6574\u7406\u3057\u3084\u3059\u3044\u3067\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%AE%9F%E5%8B%99%E3%83%91%E3%82%BF%E3%83%BC%E3%83%B3%EF%BC%9ACSV%E3%81%AE%E9%87%91%E9%A1%8D%E3%82%92%E5%90%88%E8%A8%88%E3%81%99%E3%82%8B\"><\/span>\u5b9f\u52d9\u30d1\u30bf\u30fc\u30f3\uff1aCSV\u306e\u91d1\u984d\u3092\u5408\u8a08\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5b9f\u52d9\u3067\u3044\u3061\u3070\u3093\u3088\u304f\u3042\u308b\u5f62\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n<img decoding=\"async\" src=\"images\/00112\/06_csv.png\" alt=\"CSV\u306e\u91d1\u984d\u3092\u5408\u8a08\u3059\u308b\u5b9f\u52d9\u30d1\u30bf\u30fc\u30f3\" \/>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">import csv\nfrom decimal import Decimal, InvalidOperation\n\ntotal = Decimal(&quot;0&quot;)\nskipped = []\n\nwith open(&quot;uriage.csv&quot;, encoding=&quot;utf-8&quot;) as f:\n    for row in csv.DictReader(f):\n        raw = (row[&quot;\u91d1\u984d&quot;] or &quot;&quot;).replace(&quot;,&quot;, &quot;&quot;).strip()\n        try:\n            total += Decimal(raw)\n        except InvalidOperation:\n            skipped.append(row[&quot;\u5546\u54c1&quot;])      # \u3069\u306e\u884c\u304c\u30c0\u30e1\u304b\u3092\u8a18\u9332\n\nprint(f&quot;\u5408\u8a08: {total:,} \u5186&quot;)\nprint(f&quot;\u30b9\u30ad\u30c3\u30d7: {skipped}&quot;)<\/code><\/pre>\n<pre style=\"padding: 0;\"><code class=\"language-python line-numbers\">\u5408\u8a08: 184,780 \u5186\n\u30b9\u30ad\u30c3\u30d7: [&#039;\u5408\u8a08\u306a\u3057&#039;]<\/code><\/pre>\n<p>\u30dd\u30a4\u30f3\u30c8\u306f<strong>\u4f8b\u5916\u3092\u63e1\u308a\u3064\u3076\u3055\u306a\u3044<\/strong>\u3053\u3068\u3067\u3059\u3002\u3069\u306e\u884c\u304c\u5909\u63db\u3067\u304d\u306a\u304b\u3063\u305f\u304b\u3092\u8a18\u9332\u3057\u3066\u304a\u304f\u3068\u3001\u3042\u3068\u304b\u3089\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%82%88%E3%81%8F%E3%81%82%E3%82%8B%E9%96%93%E9%81%95%E3%81%84\"><\/span>\u3088\u304f\u3042\u308b\u9593\u9055\u3044<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<table>\n<thead>\n<tr>\n<th>\u9593\u9055\u3044<\/th>\n<th>\u8d77\u304d\u308b\u3053\u3068<\/th>\n<th>\u6b63\u3057\u3044\u66f8\u304d\u65b9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>int(s) \u3092\u3044\u304d\u306a\u308a\u4f7f\u3046<\/td>\n<td>ValueError\u3067\u6b62\u307e\u308b<\/td>\n<td>try\/except \u304b\u524d\u51e6\u7406\u3092\u5165\u308c\u308b<\/td>\n<\/tr>\n<tr>\n<td>s.isdigit() \u3067\u5224\u5b9a\u3059\u308b<\/td>\n<td>\u8aa4\u5224\u5b9a\u3059\u308b<\/td>\n<td>try\/except \u3067\u5224\u5b9a\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td>except \u3067\u5168\u90e8\u53d7\u3051\u308b<\/td>\n<td>\u30d0\u30b0\u3092\u898b\u9003\u3059<\/td>\n<td>ValueError, TypeError \u3092\u6307\u5b9a\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u91d1\u984d\u3092 float \u3067\u8a08\u7b97\u3059\u308b<\/td>\n<td>1\u5186\u5358\u4f4d\u3067\u305a\u308c\u308b<\/td>\n<td>Decimal \u3092\u4f7f\u3046<\/td>\n<\/tr>\n<tr>\n<td>Decimal(0.1) \u3068\u66f8\u304f<\/td>\n<td>\u8aa4\u5dee\u3092\u5f15\u304d\u7d99\u3050<\/td>\n<td>Decimal(&#8220;0.1&#8221;) \u3068\u6587\u5b57\u5217\u3067\u6e21\u3059<\/td>\n<\/tr>\n<tr>\n<td>int(float(s)) \u3092\u5fd8\u308c\u308b<\/td>\n<td>&#8220;1.0&#8221; \u3067\u30a8\u30e9\u30fc<\/td>\n<td>\u5c0f\u6570\u70b9\u304c\u3042\u308b\u306a\u3089 int(float(s))<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><span class=\"ez-toc-section\" id=\"%E3%82%A8%E3%82%AF%E7%9F%AD%E6%B5%81%EF%BC%9AExcel%E3%81%AE%E3%83%87%E3%83%BC%E3%82%BF%E3%82%92Python%E3%81%A7%E8%AA%AD%E3%82%80%E3%81%A8%E3%81%8D%E3%81%AE%E6%B3%A8%E6%84%8F\"><\/span>\u30a8\u30af\u77ed\u6d41\uff1aExcel\u306e\u30c7\u30fc\u30bf\u3092Python\u3067\u8aad\u3080\u3068\u304d\u306e\u6ce8\u610f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Excel\u3084CSV\u304b\u3089\u53d6\u308a\u8fbc\u3093\u3060\u5024\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u72b6\u614b\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u72b6\u614b<\/th>\n<th>\u4f8b<\/th>\n<th>\u5bfe\u51e6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u91d1\u984d\u306b\u30ab\u30f3\u30de\u304c\u5165\u3063\u3066\u3044\u308b<\/td>\n<td>1,234<\/td>\n<td>replace(&#8220;,&#8221;, &#8220;&#8221;)<\/td>\n<\/tr>\n<tr>\n<td>\u5168\u89d2\u3067\u5165\u529b\u3055\u308c\u3066\u3044\u308b<\/td>\n<td>\uff11\uff12\uff13\uff14<\/td>\n<td>NFKC\u6b63\u898f\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u5358\u4f4d\u304c\u4ed8\u3044\u3066\u3044\u308b<\/td>\n<td>1,234\u5186<\/td>\n<td>\u6570\u5b57\u4ee5\u5916\u3092\u9664\u53bb<\/td>\n<\/tr>\n<tr>\n<td>\u7a7a\u6b04\u304c\u3042\u308b<\/td>\n<td>\uff08\u7a7a\uff09<\/td>\n<td>strip() \u3068\u7a7a\u30c1\u30a7\u30c3\u30af<\/td>\n<\/tr>\n<tr>\n<td>\u6587\u5b57\u5217\u3068\u3057\u3066\u4fdd\u5b58\u3055\u308c\u3066\u3044\u308b<\/td>\n<td>&#8216;123<\/td>\n<td>\u982d\u306e\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3092\u9664\u53bb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table>\n<thead>\n<tr>\n<th>\u4f5c\u696d<\/th>\n<th>Excel\uff08VBA\uff09<\/th>\n<th>Python<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6574\u6570\u306b\u5909\u63db<\/td>\n<td>CLng(&#8220;123&#8221;)<\/td>\n<td>int(&#8220;123&#8221;)<\/td>\n<\/tr>\n<tr>\n<td>\u5c0f\u6570\u306b\u5909\u63db<\/td>\n<td>CDbl(&#8220;123.45&#8221;)<\/td>\n<td>float(&#8220;123.45&#8221;)<\/td>\n<\/tr>\n<tr>\n<td>\u5909\u63db\u3067\u304d\u306a\u3044\u3068\u304d<\/td>\n<td>IsNumeric() \u3067\u5224\u5b9a<\/td>\n<td>try\/except \u3067\u5224\u5b9a<\/td>\n<\/tr>\n<tr>\n<td>\u5168\u89d2\u6570\u5b57<\/td>\n<td>StrConv(s, vbNarrow)<\/td>\n<td>unicodedata.normalize(&#8220;NFKC&#8221;, s)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>VBA\u306e IsNumeric() \u306f\u5224\u5b9a\u7528\u306b\u4f7f\u3048\u307e\u3059\u304c\u3001Python\u306e isdigit() \u306f<strong>\u5224\u5b9a\u306b\u4f7f\u3048\u306a\u3044<\/strong>\u3068\u3044\u3046\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u300c\u5224\u5b9a\u3057\u3066\u304b\u3089\u5909\u63db\u300d\u3067\u306f\u306a\u304f\u3001<strong>\u300c\u5909\u63db\u3057\u3066\u307f\u3066\u3001\u5931\u6557\u3057\u305f\u3089\u5bfe\u51e6\u300d<\/strong>\u3068\u8003\u3048\u308b\u306e\u304cPython\u6d41\u3067\u3059\u3002<\/p>\n<div class=\"balloon5\">\n<div class=\"faceicon\">\n<img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2020\/11\/taka_kao.gif\" alt=\"\u30bf\u30ab\u30d2\u30ed\" width=\"110\" height=\"110\" \/><\/p>\n<div class=\"faceiconfont\">\u30bf\u30ab\u30d2\u30ed<\/div>\n<\/div>\n<div class=\"chatting\">\n<div class=\"says\">\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u6587\u5b57\u5217\u306f\u3001\u305f\u3044\u3066\u3044\u300c\u898b\u305f\u76ee\u306f\u6570\u5b57\u300d\u3067\u3059\u3002\u8a18\u53f7\u30fb\u5168\u89d2\u30fb\u7a7a\u767d\u306e3\u3064\u3092\u7591\u3046\u3068\u3001\u307b\u307c\u89e3\u6c7a\u3057\u307e\u3059\u3088\u3002<\/div>\n<\/div>\n<\/div>\n<p><!--\u5439\u304d\u51fa\u3057\u7d42\u308f\u308a--><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%95%E3%81%84%E3%81%94%E3%81%AB\"><\/span>\u3055\u3044\u3054\u306b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4eca\u56de\u306f\u3001Python\u3067\u6587\u5b57\u5217\u3092\u6570\u5024\u306b\u5909\u63db\u3059\u308b\u65b9\u6cd5\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n<div class=\"endinfo\">\n<strong>1.<\/strong> \u6574\u6570\u306f int()\u3001\u5c0f\u6570\u306f float() \u3067\u5909\u63db\u3059\u308b<br \/>\n<strong>2.<\/strong> \u30a8\u30e9\u30fc\u306f\u300cValueError\uff1d\u4e2d\u8eab\u306e\u554f\u984c\u300d\u300cTypeError\uff1d\u578b\u306e\u554f\u984c\u300d\u3067\u5207\u308a\u5206\u3051\u308b<br \/>\n<strong>3.<\/strong> \u30ab\u30f3\u30de\u30fb\u901a\u8ca8\u8a18\u53f7\u30fb\u5168\u89d2\u306f\u524d\u51e6\u7406\u3067\u53d6\u308a\u9664\u304f<br \/>\n<strong>4.<\/strong> isdigit() \u3067\u306e\u5224\u5b9a\u306f\u3084\u3081\u3066\u3001try\/except \u3067\u66f8\u304f<br \/>\n<strong>5.<\/strong> \u91d1\u984d\u306e\u8a08\u7b97\u306f Decimal \u3092\u4f7f\u3046\n<\/div>\n<p>\u5909\u63db\u3067\u304d\u306a\u3044\u6587\u5b57\u5217\u306b\u51fa\u4f1a\u3063\u305f\u3068\u304d\u306f\u3001\u307e\u305a<strong>\u30a8\u30e9\u30fc\u6587\u306e\u7a2e\u985e<\/strong>\u3092\u898b\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u308c\u3060\u3051\u3067\u539f\u56e0\u306e\u898b\u5f53\u304c\u3064\u304d\u307e\u3059\u3002<\/p>\n<p>ValueError \u3068 TypeError \u306e\u9055\u3044\u3055\u3048\u62bc\u3055\u3048\u3066\u304a\u3051\u3070\u3001\u5207\u308a\u5206\u3051\u306f\u30ab\u30f3\u30bf\u30f3\u3067\u3059\u306d\u3002<\/p>\n<p>\u6587\u5b57\u5217\u304b\u3089\u6570\u5024\u3078\u306e\u5909\u63db\u306f\u3001\u30c7\u30fc\u30bf\u51e6\u7406\u306e\u3044\u3061\u3070\u3093\u6700\u521d\u306e\u95a2\u9580\u3067\u3059\u3002\u3053\u3053\u3067\u3064\u307e\u305a\u304b\u306a\u304f\u306a\u308b\u3068\u3001CSV\u3082API\u3082\u3050\u3063\u3068\u6271\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n<p>\u300c1,234\u300d\u306e\u3088\u3046\u306a\u5024\u304c\u51fa\u3066\u304d\u305f\u3068\u304d\u306f\u3001\u3053\u306e\u624b\u9806\u3092\u305c\u3072\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u6700\u5f8c\u307e\u3067\u304a\u8aad\u307f\u3044\u305f\u3060\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python\u3067CSV\u3084API\u3001\u753b\u9762\u304b\u3089\u306e\u5165\u529b\u3092\u6271\u3063\u3066\u3044\u308b\u3068\u3001**\u300c\u6570\u5b57\u306b\u898b\u3048\u308b\u306e\u306b\u6570\u5024\u3068\u3057\u3066\u4f7f\u3048\u306a\u3044\u300d**\u3068\u3044\u3046\u5834\u9762\u306b\u3088\u304f\u51fa\u4f1a\u3044\u307e\u3059\u3002 \u305d\u3093\u306a\u3068\u304d\u306b\u56f0\u308b\u3053\u3068\u306f\u3001 \u30fbint()\u3084float()\u3067\u30a8\u30e9\u30fc\u304c\u51fa\u3066\u5148\u306b\u9032\u3081\u306a\u3044 \u30fb&#8230;<\/p>\n","protected":false},"author":1,"featured_media":11306,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[218],"tags":[235],"class_list":{"0":"post-12214","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-python","8":"tag-235","9":"article cf"},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"\u30bf\u30ab\u30d2\u30ed@extan\"\/>\n\t<meta name=\"keywords\" content=\"\u6570\u5024\u306b\u5909\u63db\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/extan.jp\/?p=12214\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO 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