{"id":3501,"date":"2021-10-18T23:18:29","date_gmt":"2021-10-18T14:18:29","guid":{"rendered":"https:\/\/obenkyolab.com\/?p=3501"},"modified":"2022-01-09T23:55:58","modified_gmt":"2022-01-09T14:55:58","slug":"%e3%80%90python%e3%80%91%e8%a6%81%e7%b4%a0%e6%95%b0%ef%bc%90%e3%82%92%e5%88%a4%e5%ae%9a%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/obenkyolab.com\/?p=3501","title":{"rendered":"\u3010Python\u3011\u8981\u7d20\u6570\uff10\u3092\u5224\u5b9a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/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\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" 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: #999;color:#999\" 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><\/span><\/span><\/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:\/\/obenkyolab.com\/?p=3501\/#%E6%A6%82%E8%A6%81\" >\u6982\u8981<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/obenkyolab.com\/?p=3501\/#%E7%A9%BA%E3%83%AA%E3%82%B9%E3%83%88%E3%81%AE%E5%88%A4%E5%AE%9A\" >\u7a7a\u30ea\u30b9\u30c8\u306e\u5224\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/obenkyolab.com\/?p=3501\/#%E7%A9%BA%E8%BE%9E%E6%9B%B8%E3%81%AE%E5%88%A4%E5%AE%9A\" >\u7a7a\u8f9e\u66f8\u306e\u5224\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/obenkyolab.com\/?p=3501\/#%E7%A9%BA%E3%82%BF%E3%83%97%E3%83%AB%E3%81%AE%E5%88%A4%E5%AE%9A\" >\u7a7a\u30bf\u30d7\u30eb\u306e\u5224\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/obenkyolab.com\/?p=3501\/#%E7%A9%BA%E6%96%87%E5%AD%97%E3%81%AE%E5%88%A4%E5%AE%9A\" >\u7a7a\u6587\u5b57\u306e\u5224\u5b9a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/obenkyolab.com\/?p=3501\/#%E3%81%BE%E3%81%A8%E3%82%81\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A6%82%E8%A6%81\"><\/span>\u6982\u8981<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Python\u3067\u6761\u4ef6\u5206\u5c90\u3092\u8a18\u8ff0\u3059\u308b\u969b\u306b\u3001<strong>\u8981\u7d20\u6570\u304c0\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3057\u305f\u3044<\/strong>\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306afor\u6587\u3092\u8a18\u8ff0\u3059\u308b\u3088\u3046\u306a\u5834\u5408\u3092\u8003\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>lists = [[1,2,3],[2,3,4]]\nfor list in lists:\n    print(list[1])\n\n&gt;2\n&gt;3<\/code><\/pre><\/div>\n\n\n\n<p>\u3053\u308c\u306f\u30ea\u30b9\u30c8\u306e\u8981\u7d20\uff08\u305d\u308c\u305e\u308c\u3082\u8981\u7d20\uff09\u306e\u4e2d\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b91\u306e\u5024\u3092\u8868\u793a\u3059\u308b\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060\u3001\u3053\u306e\u3088\u3046\u306b\u30ea\u30b9\u30c8\u5185\u306b\u7a7a\u306e\u30ea\u30b9\u30c8\u304c\u6df7\u3056\u3063\u3066\u3044\u308b\u3088\u3046\u306a\u5834\u5408\u306f\u30a8\u30e9\u30fc\u304c\u51fa\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>lists = [[1,2,3],[2,3,4],[]]\nfor list in lists:\n    print(list[1])\n\n&gt;2\n&gt;3\n---------------------------------------------------------------------------\nIndexError                                Traceback (most recent call last)\n&lt;ipython-input-32-893ae578b494&gt; in &lt;module&gt;\n      1 lists = [[1,2,3],[2,3,4],[]]\n      2 for list in lists:\n----&gt; 3     print(list[1])\n\nIndexError: list index out of range<\/code><\/pre><\/div>\n\n\n\n<p>\u30ea\u30b9\u30c8\u5185\u306e\u7a7a\u30ea\u30b9\u30c8\u306b\u3064\u3044\u3066\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b91\u304c\u5b58\u5728\u3057\u306a\u3044\u305f\u3081\u3001index out of range\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u7a7a\u30ea\u30b9\u30c8\u306e\u307f\u5224\u5b9a\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%A9%BA%E3%83%AA%E3%82%B9%E3%83%88%E3%81%AE%E5%88%A4%E5%AE%9A\"><\/span>\u7a7a\u30ea\u30b9\u30c8\u306e\u5224\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Python\u3067\u306f<span class=\"su-highlight\" style=\"background:#f4fe2c;color:#000000\">&nbsp;<strong>\u7a7a\u30ea\u30b9\u30c8\u306fFalse\u306e\u5024\u3092\u6301\u3061\u307e\u3059\u3002<\/strong>&nbsp;<\/span>\u3064\u307e\u308a\u3001\u3053\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308b\u3053\u3068\u3067\u5224\u5b9a\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>list_emp = []\nif list_emp:\n    pass\nelse:\n    print(&#39;This is False&#39;)\n\n&gt;This is False<\/code><\/pre><\/div>\n\n\n\n<p>\u5192\u982d\u306e\u4f8b\u306b\u9069\u7528\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>lists = [[1,2,3],[2,3,4],[]]\nfor list in lists:\n    if list:\n        print(list[1])        \n    else:\n        pass\n\n&gt;This is False<\/code><\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<p>\u3000<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u306a\u304a\u3001len()\u3092\u4f7f\u7528\u3057\u3066\u3001\u30ea\u30b9\u30c8\u306e\u30b5\u30a4\u30ba\u304c0\u3067\u3042\u308b\u3053\u3068\u3092\u4f7f\u7528\u3057\u3066\u5224\u5b9a\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>lists = [[1,2,3],[2,3,4],[]]\nfor list in lists:\n    if len(list)==0:\n        pass\n    else:\n        print(list[1])  <\/code><\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%A9%BA%E8%BE%9E%E6%9B%B8%E3%81%AE%E5%88%A4%E5%AE%9A\"><\/span>\u7a7a\u8f9e\u66f8\u306e\u5224\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u8f9e\u66f8\u578b\u306b\u3064\u3044\u3066\u3082\u540c\u69d8\u306b\u7a7a\u306e\u5834\u5408\u306fFalse\u3068\u306a\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5224\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>dict_emp = {}\nif dict_emp:\n    pass\nelse:\n    print(&#39;This is False&#39;)\n\n&gt;This is False<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%A9%BA%E3%82%BF%E3%83%97%E3%83%AB%E3%81%AE%E5%88%A4%E5%AE%9A\"><\/span>\u7a7a\u30bf\u30d7\u30eb\u306e\u5224\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u30bf\u30d7\u30eb\u306e\u5834\u5408\u3082\u540c\u69d8\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>tuple_emp = ()\nif tuple_emp :\n    pass\nelse:\n    print(&#39;This is False&#39;)\n\n&gt;This is False<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%A9%BA%E6%96%87%E5%AD%97%E3%81%AE%E5%88%A4%E5%AE%9A\"><\/span>\u7a7a\u6587\u5b57\u306e\u5224\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u7a7a\u6587\u5b57\u306b\u3064\u3044\u3066\u3082\u540c\u69d8\u306b\u5224\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-python\" data-lang=\"Python\"><code>str_emp = &#39;&#39;\nif str_emp:\n    pass\nelse:\n    print(&#39;This is False&#39;)\n\n&gt;This is False<\/code><\/pre><\/div>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><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\n\n\n<p>\u8981\u7d20\u304c\u7a7a\u306e\u3082\u306e\u3092\u5224\u5b9a\u3059\u308b\u306b\u306f\u3001\u5024\u304cFalse\u3067\u3042\u308b\u3053\u3068\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u30b3\u30fc\u30c9\u304c\u30b7\u30f3\u30d7\u30eb\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 Python\u3067\u6761\u4ef6\u5206\u5c90\u3092\u8a18\u8ff0\u3059\u308b\u969b\u306b\u3001\u8981\u7d20\u6570\u304c0\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":1218,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_locale":"ja","_original_post":"https:\/\/obenkyolab.com\/?p=3501","footnotes":""},"categories":[7],"tags":[71,72],"class_list":["post-3501","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-71","tag-72","ja"],"_links":{"self":[{"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/posts\/3501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3501"}],"version-history":[{"count":4,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/posts\/3501\/revisions"}],"predecessor-version":[{"id":4622,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/posts\/3501\/revisions\/4622"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=\/wp\/v2\/media\/1218"}],"wp:attachment":[{"href":"https:\/\/obenkyolab.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/obenkyolab.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}