{"id":780,"date":"2025-07-21T09:15:34","date_gmt":"2025-07-21T00:15:34","guid":{"rendered":"https:\/\/oak-sol.com\/?post_type=blog&#038;p=780"},"modified":"2025-07-21T13:50:29","modified_gmt":"2025-07-21T04:50:29","slug":"the-real-goal-seek","status":"publish","type":"blog","link":"https:\/\/oak-sol.com\/en\/blog-all\/the-real-goal-seek\/","title":{"rendered":"\u672c\u5f53\u306e\u30b4\u30fc\u30eb\u30b7\u30fc\u30af"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignleft size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"620\" height=\"350\" src=\"https:\/\/oak-sol.com\/wp-content\/uploads\/2025\/07\/20250721.png\" alt=\"\" class=\"wp-image-778\" style=\"width:250px\" srcset=\"https:\/\/oak-sol.com\/wp-content\/uploads\/2025\/07\/20250721.png 620w, https:\/\/oak-sol.com\/wp-content\/uploads\/2025\/07\/20250721-300x169.png 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/figure>\n<\/div>\n\n\n<p>\u8a33\u3042\u3063\u3066\u3001\u8907\u6570\u884c\u3092\u4e00\u767a\u3067\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u81ea\u4f5c\u3059\u308b\u3053\u3068\u306b\u3002<\/p>\n\n\n\n<p>Excel\u306e\u30aa\u30f3\u30d7\u30ec\u7248\u306a\u3089VBA\u3067\u3067\u304d\u308b\u3002\u3060\u3051\u3069\u3001\u30b1\u30c1\u3063\u3066\u7121\u6599\u306eLibreOffice\u3092\u4f7f\u3063\u3066\u3044\u3066\u3001GoalSeek\u306eAPI\u304c\u6b7b\u3093\u3067\u3044\u308b\u3088\u3046\u3067\u4f7f\u3048\u306a\u3044\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u306b\u3001\u696d\u52d9\u306e\u304b\u306a\u308a\u306e\u90e8\u5206\u304cGoogle\u306eSpread Sheet\u306b\u79fb\u884c\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p>\u3067\u3001\u3069\u3046\u3057\u305f\u3089\u3044\u3044\u304b\u8272\u3005\u8003\u3048\u3066chatGPT\u306b\u76f8\u8ac7\u3057\u306a\u304c\u3089\u3001\u8a66\u884c\u932f\u8aa4\u3059\u308b\u3053\u3068\u4e38\u4e00\u65e5\u3002<\/p>\n\n\n\n<p>LibreOffice\u3067\u3082GoogleSS\u3067\u3082Excel365\u3067\u3082\u3001\u8981\u306f\u306a\u3093\u3067\u3082csv\u306b\u5410\u304d\u51fa\u305b\u3070\u3001\u5404\u884c\u306e\u6570\u5f0f\u3092\u305d\u308c\u305e\u308c\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\u3057\u3066\u89e3\u7b54\u3092\u51fa\u3059Python\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u6570\u5f0f\u3092\u5225\u9014\u3001Python\u306e\u5f62\u5f0f\u3067\u30bb\u30eb\u306b\u6587\u5b57\u5217\u3067\u5165\u308c\u3066\u304a\u304f\u306e\u304c\u6c4e\u7528\u5316\u306e\u5473\u564c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3068\u3001\u3053\u3053\u307e\u3067\u66f8\u3044\u3066\u3001\u3075\u3068\u6c17\u306b\u306a\u3063\u3066chatGPT\u306b\u805e\u3044\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u300c\u3082\u3057\u304b\u3057\u3066\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304b\u306a\u304f\u3066\u3082chatGPT\u306bcsv\u3092\u6e21\u3057\u3066\u300e\u5168\u90e8\u306e\u884c\u3092\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\u3057\u3066\u300f\u3068\u8a00\u3048\u3070\u5fdc\u3048\u3066\u304f\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u300d<\/p>\n\n\n\n<p>\u300c\u306f\u3044\u3001\u3082\u3061\u308d\u3093\u3067\u3059\u300d<\/p>\n\n\n\n<p>\u6700\u521d\u306b\u3001\u8a00\u3063\u3066\u6b32\u3057\u304b\u3063\u305f\u3002\u672c\u5f53\u306e\u30b4\u30fc\u30eb\u306f\u305d\u3053\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code>import csv\nimport tkinter as tk\nfrom tkinter import filedialog, messagebox\nfrom sympy import symbols, sympify, nsolve\nfrom pathlib import Path\n\n# \u6570\u5f0f\u3068\u5909\u6570\u30ea\u30b9\u30c8\u304b\u3089SymPy\u5f0f\u3092\u69cb\u7bc9\ndef parse_expr(expr_str, varnames):\n    syms = {name: symbols(name) for name in varnames}\n    expr = sympify(expr_str, locals=syms)\n    return expr, syms\n\n# GoalSeek\u51e6\u7406\uff08nsolve\u3067target\u306b\u4e00\u81f4\u3059\u308b\u5909\u6570\u5024\u3092\u6c42\u3081\u308b\uff09\ndef goal_seek(expr, var_symbol, fixed_dict, target, init_guess=1.0):\n    substituted_expr = expr.subs(fixed_dict)\n    return float(nsolve(substituted_expr - target, var_symbol, init_guess))\n\n# CSV\u3092\u8aad\u307f\u8fbc\u307f\u3001\u8a08\u7b97\u3057\u3066\u51fa\u529b\u7528\u30c7\u30fc\u30bf\u3092\u4f5c\u6210\ndef process_csv(file_path):\n    with open(file_path, newline=&#39;&#39;, encoding=&#39;utf-8&#39;) as infile:\n        reader = csv.DictReader(infile)\n        headers = reader.fieldnames\n        varnames = [h for h in headers if h not in (&quot;formula&quot;, &quot;target&quot;, &quot;var&quot;)]\n\n        result_rows = []\n        for row in reader:\n            try:\n                expr_str = row[&quot;formula&quot;]\n                target = float(row[&quot;target&quot;])\n                solve_var = row[&quot;var&quot;]\n\n                # None\u30c1\u30a7\u30c3\u30af\u3068strip()\u306e\u5b89\u5168\u306a\u4f75\u7528\n                fixed_vals = {\n                    k: float(row[k])\n                    for k in varnames\n                    if k != solve_var and row.get(k) is not None and str(row[k]).strip() != &quot;&quot;\n                }\n\n                expr, syms = parse_expr(expr_str, varnames)\n                result = goal_seek(expr, syms[solve_var], {syms[k]: v for k, v in fixed_vals.items()}, target)\n                row[&quot;solved_value&quot;] = result\n            except Exception as e:\n                row[&quot;solved_value&quot;] = f&quot;ERR: {e}&quot;\n            result_rows.append(row)\n\n        return headers + [&quot;solved_value&quot;], result_rows\n\n# \u30d5\u30a1\u30a4\u30eb\u9078\u629e\u304b\u3089\u51e6\u7406\u307e\u3067\u306e\u30e1\u30a4\u30f3\u95a2\u6570\ndef main():\n    root = tk.Tk()\n    root.withdraw()  # GUI\u975e\u8868\u793a\n\n    file_path = filedialog.askopenfilename(\n        title=&quot;CSV\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e&quot;,\n        filetypes=[(&quot;CSV files&quot;, &quot;*.csv&quot;)]\n    )\n    if not file_path:\n        messagebox.showwarning(&quot;\u4e2d\u6b62&quot;, &quot;\u30d5\u30a1\u30a4\u30eb\u304c\u9078\u629e\u3055\u308c\u307e\u305b\u3093\u3067\u3057\u305f\u3002&quot;)\n        return\n\n    try:\n        headers, rows = process_csv(file_path)\n        out_path = str(Path(file_path).with_name(&quot;output.csv&quot;))\n        with open(out_path, &quot;w&quot;, newline=&#39;&#39;, encoding=&#39;utf-8&#39;) as outfile:\n            writer = csv.DictWriter(outfile, fieldnames=headers)\n            writer.writeheader()\n            for row in rows:\n                writer.writerow(row)\n        messagebox.showinfo(&quot;\u5b8c\u4e86&quot;, f&quot;\u51e6\u7406\u304c\u5b8c\u4e86\u3057\u307e\u3057\u305f\uff1an{out_path}&quot;)\n    except Exception as e:\n        messagebox.showerror(&quot;\u30a8\u30e9\u30fc&quot;, str(e))\n\nif __name__ == &quot;__main__&quot;:\n    main()\n<\/code><\/pre><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\"><\/div>\n<\/div>\n","protected":false},"featured_media":778,"template":"","blogcat":[69],"item_tag":[149,150],"class_list":["post-780","blog","type-blog","status-publish","has-post-thumbnail","hentry","blogcat-en-ceo-blog","item_tag-python","item_tag-spread-sheet","en-US"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u672c\u5f53\u306e\u30b4\u30fc\u30eb\u30b7\u30fc\u30af | Oak Solutions,Inc.<\/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:\/\/oak-sol.com\/en\/blog-all\/the-real-goal-seek\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u672c\u5f53\u306e\u30b4\u30fc\u30eb\u30b7\u30fc\u30af | \u682a\u5f0f\u4f1a\u793e\u30aa\u30fc\u30af\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30ba\" \/>\n<meta property=\"og:description\" content=\"\u8a33\u3042\u3063\u3066\u3001\u8907\u6570\u884c\u3092\u4e00\u767a\u3067\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u81ea\u4f5c\u3059\u308b\u3053\u3068\u306b\u3002 Excel\u306e\u30aa\u30f3\u30d7\u30ec\u7248\u306a\u3089VBA\u3067\u3067\u304d\u308b\u3002\u3060\u3051\u3069\u3001\u30b1\u30c1\u3063\u3066\u7121\u6599\u306eLibreOffice\u3092\u4f7f\u3063\u3066\u3044\u3066\u3001GoalSeek\u306eAPI\u304c\u6b7b\u3093\u3067\u3044\u308b\u3088\u3046\u3067\u4f7f\u3048\u306a\u3044\u3002 \u305d\u308c\u306b\u3001\u696d\u52d9\u306e\u304b\u306a\u308a\u306e\u90e8\u5206\u304cGoogle\u306eSpread Sheet\u306b\u79fb\u884c\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b\u3002 \u3067\u3001\u3069\u3046\u3057\u305f\u3089\u3044\u3044\u304b\u8272\u3005\u8003\u3048\u3066chatGPT\u306b\u76f8\u8ac7\u3057\u306a\u304c\u3089\u3001\u8a66\u884c\u932f\u8aa4\u3059\u308b\u3053\u3068\u4e38\u4e00\u65e5\u3002 LibreOffice\u3067\u3082GoogleSS\u3067\u3082Excel365\u3067\u3082\u3001\u8981\u306f\u306a\u3093\u3067\u3082csv\u306b\u5410\u304d\u51fa\u305b\u3070\u3001\u5404\u884c\u306e\u6570\u5f0f\u3092\u305d\u308c\u305e\u308c\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\u3057\u3066\u89e3\u7b54\u3092\u51fa\u3059Python\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u308a\u307e\u3057\u305f\u3002 \u6570\u5f0f\u3092\u5225\u9014\u3001Python\u306e\u5f62\u5f0f\u3067\u30bb\u30eb\u306b\u6587\u5b57\u5217\u3067\u5165\u308c\u3066\u304a\u304f\u306e\u304c\u6c4e\u7528\u5316\u306e\u5473\u564c\u3067\u3059\u3002 \u3068\u3001\u3053\u3053\u307e\u3067\u66f8\u3044\u3066\u3001\u3075\u3068\u6c17\u306b\u306a\u3063\u3066chatGPT\u306b\u805e\u3044\u3066\u307f\u307e\u3057\u305f\u3002 \u300c\u3082\u3057\u304b\u3057\u3066\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u66f8\u304b\u306a\u304f\u3066\u3082chatGPT\u306bcsv\u3092\u6e21\u3057\u3066\u300e\u5168\u90e8\u306e\u884c\u3092\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\u3057\u3066\u300f\u3068\u8a00\u3048\u3070\u5fdc\u3048\u3066\u304f\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f\u300d \u300c\u306f\u3044\u3001\u3082\u3061\u308d\u3093\u3067\u3059\u300d \u6700\u521d\u306b\u3001\u8a00\u3063\u3066\u6b32\u3057\u304b\u3063\u305f\u3002\u672c\u5f53\u306e\u30b4\u30fc\u30eb\u306f\u305d\u3053\u3067\u3057\u305f\u3002 [...]Read More... from \u672c\u5f53\u306e\u30b4\u30fc\u30eb\u30b7\u30fc\u30af\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oak-sol.com\/en\/blog-all\/the-real-goal-seek\/\" \/>\n<meta property=\"og:site_name\" content=\"\u682a\u5f0f\u4f1a\u793e\u30aa\u30fc\u30af\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30ba\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-21T04:50:29+00:00\" \/>\n<meta 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