{"id":126021,"date":"2024-03-24T21:01:00","date_gmt":"2024-03-24T12:01:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%aereduce%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9\/"},"modified":"2024-03-27T18:02:25","modified_gmt":"2024-03-27T09:02:25","slug":"python%e3%81%aereduce%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%aereduce%e9%96%a2%e6%95%b0%e3%81%ae%e4%bd%bf%e3%81%84%e6%96%b9\/","title":{"rendered":"Python\u306ereduce\u95a2\u6570\u306e\u4f7f\u3044\u65b9"},"content":{"rendered":"<p>reduce\u95a2\u6570\u306fPython\u3067\u5185\u8535\u3055\u308c\u308b\u9ad8\u968e\u95a2\u6570\u3067\u3001\u5f15\u6570\u3068\u3057\u3066\u95a2\u6570\u3068\u53cd\u5fa9\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u53cd\u5fa9\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u7d2f\u7a4d\u6f14\u7b97\u3092\u5b9f\u884c\u3057\u3001\u6700\u7d42\u7684\u306b\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>reduce \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001functools \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3001functools.reduce() \u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n<p>reduce\u95a2\u6570 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439:<\/p>\n<pre class=\"post-pre\"><code>reduce(function, iterable[, initializer])\r\n<\/code><\/pre>\n<p>\u305d\u306e\u3046\u3061\uff1a<\/p>\n<ol>\n<li>\u95a2\u6570\uff1a2\u3064\u306e\u5f15\u6570\u3092\u53d7\u3051\u53d6\u308a\u30011\u3064\u306e\u7d50\u679c\u3092\u8fd4\u3059\u3001\u3042\u306a\u305f\u304c\u81ea\u5206\u3067\u66f8\u3044\u305f\u95a2\u6570\u3002<\/li>\n<li>\u30a4\u30c6\u30e9\u30d6\u30eb\uff1a\u7d2f\u7a4d\u51e6\u7406\u306e\u5bfe\u8c61\u3068\u306a\u308b\u8981\u7d20\u3092\u542b\u3080\u3001\u53cd\u5fa9\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3002<\/li>\n<li>initialValue\uff08\u30aa\u30d7\u30b7\u30e7\u30f3\uff09\uff1a\u521d\u671f\u5024\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306f\u6307\u5b9a\u3055\u308c\u307e\u305b\u3093\u3002\u6307\u5b9a\u3057\u305f\u5834\u5408\u3001\u30a4\u30c6\u30e9\u30d6\u30eb\u306e\u6700\u521d\u306e\u8981\u7d20\u3088\u308a\u524d\u306binitialValue\u3068\u3001\u6700\u521d\u306e\u8981\u7d20\u304c\u5f15\u6570\u3068\u3057\u3066function\u95a2\u6570\u306b\u6e21\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u30ea\u30b9\u30c8\u5185\u306e\u3059\u3079\u3066\u306e\u8981\u7d20\u306e\u5408\u8a08\u3092\u8a08\u7b97\u3059\u308b\u305f\u3081\u306b reduce \u95a2\u6570\u3092\u4f7f\u3046\u65b9\u6cd5\u3092\u793a\u3059\u3001\u5358\u7d14\u306a\u4f8b\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">from<\/span> functools <span class=\"hljs-keyword\">import<\/span> reduce\r\nnumbers = [<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2<\/span>, <span class=\"hljs-number\">3<\/span>, <span class=\"hljs-number\">4<\/span>, <span class=\"hljs-number\">5<\/span>]\r\n<span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">add<\/span>(<span class=\"hljs-params\">x, y<\/span>):\r\n<span class=\"hljs-keyword\">return<\/span> x + y\r\n<span class=\"hljs-built_in\">sum<\/span> = reduce(add, numbers)\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-built_in\">sum<\/span>)  <span class=\"hljs-comment\"># \u8f93\u51fa15<\/span>\r\n<\/code><\/pre>\n<p>\u4e0a\u306e\u30b3\u30fc\u30c9\u3067\u3001add\u95a2\u6570\u306b\u306f2\u3064\u306e\u5f15\u6570\u304c\u6e21\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u306e\u548c\u3092\u8fd4\u3057\u3066\u3044\u307e\u3059\u3002reduce\u95a2\u6570\u306f\u3001numbers\u30ea\u30b9\u30c8\u306b\u3042\u308b\u8981\u7d20\u306b\u5bfe\u3057\u3066\u3001add\u95a2\u6570\u3092\u9806\u756a\u306b\u9069\u7528\u3057\u3001\u6700\u7d42\u7684\u306b\u30ea\u30b9\u30c8\u5185\u306e\u5408\u8a08\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<p>Python 3\u3067\u306freduce\u95a2\u6570\u304cfunctools\u30e2\u30b8\u30e5\u30fc\u30eb\u306b\u79fb\u52d5\u3055\u308c\u305f\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u3001functools\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u3066reduce\u95a2\u6570\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>reduce\u95a2\u6570\u306fPython\u3067\u5185\u8535\u3055\u308c\u308b\u9ad8\u968e\u95a2\u6570\u3067\u3001\u5f15\u6570\u3068\u3057\u3066\u95a2\u6570\u3068\u53cd\u5fa9\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d7\u3051\u53d6\u308a\u307e\u3059\u3002\u53cd\u5fa9\u53ef\u80fd\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8981\u7d20\u306b\u5bfe\u3057\u3066\u7d2f\u7a4d\u6f14\u7b97\u3092\u5b9f\u884c\u3057\u3001\u6700\u7d42\u7684\u306b\u7d50\u679c\u3092\u8fd4\u3057\u307e\u3059\u3002 reduce \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-126021","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python\u306ereduce\u95a2\u6570\u306e\u4f7f\u3044\u65b9 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/python\u306ereduce\u95a2\u6570\u306e\u4f7f\u3044\u65b9\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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