{"id":3476,"date":"2024-02-15T02:12:38","date_gmt":"2024-02-14T17:12:38","guid":{"rendered":"https:\/\/www.dogrow.net\/python\/?p=3476"},"modified":"2024-02-15T02:15:14","modified_gmt":"2024-02-14T17:15:14","slug":"blog122","status":"publish","type":"post","link":"https:\/\/www.dogrow.net\/python\/blog122\/","title":{"rendered":"(122) Pandas\u3067\u8907\u6570 CSV\u30d5\u30a1\u30a4\u30eb\u306e\u30c7\u30fc\u30bf\u3092\u9023\u7d50\u3059\u308b\u3002"},"content":{"rendered":"<h1 class=\"my_h\">\u30101\u3011\u3084\u308a\u305f\u3044\u3053\u3068<\/h1>\n<p>\u540c\u3058\u30c7\u30fc\u30bf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e CSV\u30d5\u30a1\u30a4\u30eb\u304c\u8907\u6570\u3042\u308b\u3002<br \/>\n\u3059\u306a\u308f\u3061\u3001\u5217\u30d8\u30c3\u30c0\u304c\u307e\u3063\u305f\u304f\u540c\u3058 CSV\u30d5\u30a1\u30a4\u30eb\u304c\u8907\u6570\u3042\u308b\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9023\u7d50\u3057\u3001\u4e00\u3064\u306e\u914d\u5217\u306b\u675f\u306d\u3001\u4e00\u3064\u306e CSV\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3057\u305f\u3044\u3002<br \/>\n\u305f\u3060\u3057\u3001\u5217\u30d8\u30c3\u30c0\u306f\u5148\u982d\u884c\u306e\u307f\u306b\u51fa\u529b\u3057\u305f\u3044\u3002<\/p>\n<h1 class=\"my_h\">\u30102\u3011\u3084\u3063\u3066\u307f\u308b<\/h1>\n<p>\u4e0b\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001ChatGPT\u5927\u5148\u751f\u306b\u51fa\u529b\u3057\u3066\u3044\u305f\u3060\u3044\u305f\u30b3\u30fc\u30c9\u306b\u3001\u5c11\u3057\u3060\u3051\u624b\u3092\u52a0\u3048\u305f\u30b3\u30fc\u30c9\u3067\u3059\u3002<br \/>\n\u3044\u3084\u3041\uff5e \u4fbf\u5229\u3060\u306a\u3041\u3002<\/p>\n<pre class=\"brush: python; title: ; notranslate\" title=\"\">\r\nimport pandas as pd\r\nimport glob\r\nimport os\r\n\r\n# CSV\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002'*'\u306f\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3068\u3057\u3066\u3001\r\n# \u7279\u5b9a\u306e\u30d1\u30bf\u30fc\u30f3\u306b\u30de\u30c3\u30c1\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u3059\u3079\u3066\u53d6\u5f97\u3057\u307e\u3059\u3002\r\nfile_paths = glob.glob('in\/*.csv')\r\n\r\n# \u7d50\u679c\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u306e\u7a7a\u306e\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u7528\u610f\u3057\u307e\u3059\u3002\r\ndf_concatenated = pd.DataFrame()\r\n\r\n# \u5404\u30d5\u30a1\u30a4\u30eb\u3092\u30eb\u30fc\u30d7\u51e6\u7406\u3057\u307e\u3059\u3002\r\nfor i, file in enumerate(file_paths):\r\n    # \u6700\u521d\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u3001\u30d8\u30c3\u30c0\u3092\u542b\u3081\u3066\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002\r\n    if i == 0:\r\n        df = pd.read_csv(file)\r\n    else:\r\n        # 2\u500b\u76ee\u4ee5\u964d\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u5408\u3001\u30d8\u30c3\u30c0\u3092\u9664\u3044\u3066\u8aad\u307f\u8fbc\u307f\u307e\u3059\u3002\r\n        df = pd.read_csv(file, header=None, skiprows=1)\r\n        \r\n        # 2\u500b\u76ee\u4ee5\u964d\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u30ab\u30e9\u30e0\u540d\u3092\u6700\u521d\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u30ab\u30e9\u30e0\u540d\u306b\u5408\u308f\u305b\u307e\u3059\u3002\r\n        df.columns = df_concatenated.columns\r\n        \r\n    # \u8aad\u307f\u8fbc\u3093\u3060\u30c7\u30fc\u30bf\u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u679c\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002\r\n    df_concatenated = pd.concat(&#x5B;df_concatenated, df], ignore_index=True)\r\n\r\n# \u51fa\u529b\u30d5\u30a9\u30eb\u30c0\u306e\u5b58\u5728\u3092\u691c\u67fb\u3057\u3001\u5b58\u5728\u3057\u306a\u3051\u308c\u3070\u4f5c\u6210\u3057\u307e\u3059\u3002\r\nout_dir = '.\/out'\r\nif not os.path.exists(out_dir):\r\n    os.makedirs(out_dir)\r\n\r\n# \u7d50\u679c\u3092CSV\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3057\u307e\u3059\u3002\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u4fdd\u5b58\u3057\u306a\u3044\u3088\u3046\u306b\u6307\u5b9a\u3057\u307e\u3059\u3002\r\nout_fpath = os.path.join(out_dir, 'out.csv')\r\ndf_concatenated.to_csv(out_fpath, index=False, encoding='cp932')\r\n<\/pre>\n<hr class=\"my_hr_bottom\">\n","protected":false},"excerpt":{"rendered":"<p>\u30101\u3011\u3084\u308a\u305f\u3044\u3053\u3068 \u540c\u3058\u30c7\u30fc\u30bf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306e CSV\u30d5\u30a1\u30a4\u30eb\u304c\u8907\u6570\u3042\u308b\u3002 \u3059\u306a\u308f\u3061\u3001\u5217\u30d8\u30c3\u30c0\u304c\u307e\u3063\u305f\u304f\u540c\u3058 CSV\u30d5\u30a1\u30a4\u30eb\u304c\u8907\u6570\u3042\u308b\u3002 \u3053\u308c\u3089\u306e CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9023\u7d50\u3057\u3001\u4e00\u3064\u306e\u914d\u5217\u306b\u675f\u306d\u3001\u4e00\u3064\u306e CSV\u30d5\u30a1\u30a4\u30eb\u306b\u51fa\u529b\u3057\u305f\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.dogrow.net\/python\/blog122\/\">\u7d9a\u304d\u3092\u8aad\u3080 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[55,42],"tags":[],"class_list":["post-3476","post","type-post","status-publish","format-standard","hentry","category-csv","category-pandas"],"views":835,"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/posts\/3476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/comments?post=3476"}],"version-history":[{"count":6,"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/posts\/3476\/revisions"}],"predecessor-version":[{"id":3482,"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/posts\/3476\/revisions\/3482"}],"wp:attachment":[{"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/media?parent=3476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/categories?post=3476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dogrow.net\/python\/wp-json\/wp\/v2\/tags?post=3476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}