{"blog_url":"https://nainaistar.hatenablog.com/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnainaistar.hatenablog.com%2Fentry%2Fpydantic-default-vs-default_factory-mutable-params\" title=\"Pydantic\u3067\u306f\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u3067\u3082default, default_factory\u306e\u3069\u3063\u3061\u3067\u3082\u3088\u3055\u305d\u3046 - \u304d\u308a\u4e38\u306e\u6280\u8853\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/n/nainaistar/20240824/20240824230534.png","blog_title":"\u304d\u308a\u4e38\u306e\u6280\u8853\u65e5\u8a18","width":"100%","url":"https://nainaistar.hatenablog.com/entry/pydantic-default-vs-default_factory-mutable-params","categories":["Python","\u6280\u8853"],"title":"Pydantic\u3067\u306f\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u3067\u3082default, default_factory\u306e\u3069\u3063\u3061\u3067\u3082\u3088\u3055\u305d\u3046","type":"rich","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","author_name":"nainaistar","height":"190","description":"\u7d50\u8ad6 pydantic\u3067\u306fdefault\u3082default_factory\u3082\u540c\u7b49\u306e\u7d50\u679c\u3092\u8fd4\u5374\u3057\u305d\u3046\u3002 \u59cb\u3081\u306b \u5c0f\u30cd\u30bf\u8a18\u4e8b\u3002Python\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5f15\u6570\u306b\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u306a\u5024\u3092\u6307\u5b9a\u3057\u305f\u3046\u3048\u3067\u3001\u30df\u30e5\u30fc\u30bf\u30d6\u30eb\u306a\u64cd\u4f5c\u3092\u884c\u3046\u3068\u3001\u540c\u3058\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5171\u6709\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002 def default_param(param: str, result:List[str]=[]) -> List[str]: result.append(param) return result _ = default_param(\"1\") result = default_param(\"2\") print(result) # \"1\"\u3092ap\u2026","version":"1.0","author_url":"https://blog.hatena.ne.jp/nainaistar/","published":"2024-08-26 12:00:00"}