{"id":111488,"date":"2024-03-22T18:36:42","date_gmt":"2024-03-22T09:36:42","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%a7csv%e3%82%92%e6%93%8d%e4%bd%9c%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-03-28T13:53:50","modified_gmt":"2024-03-28T04:53:50","slug":"python%e3%81%a7csv%e3%82%92%e6%93%8d%e4%bd%9c%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%a7csv%e3%82%92%e6%93%8d%e4%bd%9c%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"Python\u3067CSV\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>Python \u3067\u306f csv \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3063\u3066 csv \u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001csv \u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3001\u66f8\u304d\u8fbc\u307f\u3001\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u3092\u884c\u3046\u65b9\u6cd5\u306e\u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> csv\r\n\r\n<span class=\"hljs-comment\"># \u8bfb\u53d6csv\u6587\u4ef6<\/span>\r\n<span class=\"hljs-keyword\">with<\/span> <span class=\"hljs-built_in\">open<\/span>(<span class=\"hljs-string\">'data.csv'<\/span>, <span class=\"hljs-string\">'r'<\/span>) <span class=\"hljs-keyword\">as<\/span> file:\r\n    reader = csv.reader(file)\r\n    <span class=\"hljs-keyword\">for<\/span> row <span class=\"hljs-keyword\">in<\/span> reader:\r\n        <span class=\"hljs-comment\"># \u5bf9\u6bcf\u4e00\u884c\u6570\u636e\u8fdb\u884c\u5904\u7406<\/span>\r\n        processed_data = process_row(row)\r\n        <span class=\"hljs-built_in\">print<\/span>(processed_data)\r\n\r\n<span class=\"hljs-comment\"># \u5199\u5165csv\u6587\u4ef6<\/span>\r\ndata = [\r\n    [<span class=\"hljs-string\">'Name'<\/span>, <span class=\"hljs-string\">'Age'<\/span>, <span class=\"hljs-string\">'Gender'<\/span>],\r\n    [<span class=\"hljs-string\">'Alice'<\/span>, <span class=\"hljs-string\">'25'<\/span>, <span class=\"hljs-string\">'Female'<\/span>],\r\n    [<span class=\"hljs-string\">'Bob'<\/span>, <span class=\"hljs-string\">'30'<\/span>, <span class=\"hljs-string\">'Male'<\/span>]\r\n]\r\n\r\n<span class=\"hljs-keyword\">with<\/span> <span class=\"hljs-built_in\">open<\/span>(<span class=\"hljs-string\">'output.csv'<\/span>, <span class=\"hljs-string\">'w'<\/span>, newline=<span class=\"hljs-string\">''<\/span>) <span class=\"hljs-keyword\">as<\/span> file:\r\n    writer = csv.writer(file)\r\n    writer.writerows(data)\r\n\r\n<span class=\"hljs-comment\"># \u6570\u636e\u5904\u7406\u51fd\u6570\u793a\u4f8b<\/span>\r\n<span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">process_row<\/span>(<span class=\"hljs-params\">row<\/span>):\r\n    <span class=\"hljs-comment\"># \u5bf9\u6bcf\u4e00\u5217\u6570\u636e\u8fdb\u884c\u5904\u7406\uff0c\u8fd9\u91cc\u53ea\u662f\u5c06\u6570\u5b57\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6574\u6570<\/span>\r\n    processed_row = []\r\n    <span class=\"hljs-keyword\">for<\/span> item <span class=\"hljs-keyword\">in<\/span> row:\r\n        processed_row.append(<span class=\"hljs-built_in\">int<\/span>(item))\r\n    <span class=\"hljs-keyword\">return<\/span> processed_row\r\n<\/code><\/pre>\n<p>csv.reader\u3067CSV\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u307f\u3001\u5404\u884c\u306e\u30c7\u30fc\u30bf\u3092process_row\u95a2\u6570\u3067\u51e6\u7406\u3057\u307e\u3059\u3002 csv.writer\u306fCSV\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u66f8\u304d\u8fbc\u307f\u306b\u4f7f\u7528\u3055\u308c\u3001writerows\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u8907\u6570\u306e\u884c\u3092\u4e00\u5ea6\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u7684\u306a\u30c7\u30fc\u30bf\u51e6\u7406\u3067\u306f\u3001\u5177\u4f53\u7684\u306a\u30cb\u30fc\u30ba\u306b\u57fa\u3065\u3044\u3066\u3001\u4f8b\u3048\u3070Pandas\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u305f\u30c7\u30fc\u30bf\u89e3\u6790\u304a\u3088\u3073\u51e6\u7406\u306a\u3069\u3001\u4ed6\u306e\u65b9\u6cd5\u306b\u3088\u308b\u30c7\u30fc\u30bf\u51e6\u7406\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python \u3067\u306f csv \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3063\u3066 csv \u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001csv \u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3001\u66f8\u304d\u8fbc\u307f\u3001\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u3092\u884c\u3046\u65b9\u6cd5\u306e\u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002 import csv # \u8bfb\u53d6csv\u6587\u4ef6 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-111488","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\u3067CSV\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5 - 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\u3067csv\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python\u3067CSV\u3092\u64cd\u4f5c\u3059\u308b\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"Python \u3067\u306f csv \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u3063\u3066 csv \u30c7\u30fc\u30bf\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001csv \u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f\u3001\u66f8\u304d\u8fbc\u307f\u3001\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u3092\u884c\u3046\u65b9\u6cd5\u306e\u30b5\u30f3\u30d7\u30eb \u30b3\u30fc\u30c9\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002 import csv # 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