{"id":34193,"date":"2022-10-08T16:10:39","date_gmt":"2023-06-24T08:10:47","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8pydantic%e5%9c%a8python%e4%b8%ad%e8%af%bb%e5%8f%96%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e9%9d%9e%e5%b8%b8%e6%96%b9%e4%be%bf%e3%80%82\/"},"modified":"2024-01-15T08:11:48","modified_gmt":"2024-01-15T00:11:48","slug":"%e4%bd%bf%e7%94%a8pydantic%e5%9c%a8python%e4%b8%ad%e8%af%bb%e5%8f%96%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e9%9d%9e%e5%b8%b8%e6%96%b9%e4%be%bf%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8pydantic%e5%9c%a8python%e4%b8%ad%e8%af%bb%e5%8f%96%e7%8e%af%e5%a2%83%e5%8f%98%e9%87%8f%e9%9d%9e%e5%b8%b8%e6%96%b9%e4%be%bf%e3%80%82\/","title":{"rendered":"\u4f7f\u7528pydantic\u5728Python\u4e2d\u8bfb\u53d6\u73af\u5883\u53d8\u91cf\u975e\u5e38\u65b9\u4fbf"},"content":{"rendered":"<p>\u5f53\u4f60\u5b9e\u65bd\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u5904\u7406\u73af\u5883\u53d8\u91cf\u6709\u70b9\u9ebb\u70e6\uff0c\u4e0d\u662f\u5417\uff1f<\/p>\n<p>\u5f53\u4f7f\u7528Python\u8fdb\u884c\u5b9e\u73b0\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u540d\u4e3apydantic\u7684\u5e93\u6765\u8f7b\u677e\u5b9e\u73b0\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3001\u5c06\u503c\u8f6c\u6362\u4e3a\u6574\u6570\u7c7b\u578b\u4ee5\u53ca\u4ece.env\u6587\u4ef6\u4e2d\u8bfb\u53d6\u503c\u7b49\u64cd\u4f5c\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u8fd9\u4e9b\u64cd\u4f5c\u7684\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<p>\u987a\u4fbf\u8bf4\u4e00\u53e5\uff0cpydantic\u8fd9\u4e2a\u5e93\u4e0d\u4ec5\u4ec5\u662f\u7528\u6765\u8bfb\u53d6\u73af\u5883\u53d8\u91cf\u7684\uff0c\u5b83\u662f\u4e00\u4e2a\u53ef\u4ee5\u901a\u8fc7\u7c7b\u578b\u6ce8\u89e3\u6765\u5b9a\u4e49\u7c7b\u7684\u5e93\uff0c\u800c\u4e14\u8fd8\u53ef\u4ee5\u5c06JSON\u683c\u5f0f\u7684\u6570\u636e\u8f6c\u6362\u4e3a\u7c7b\u5e76\u8fdb\u884c\u9a8c\u8bc1\u3002\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u5176\u4ed6\u529f\u80fd\u7684\u4fe1\u606f\uff0c\u8bf7\u9605\u8bfb\u4e0b\u4e00\u7bc7\u6587\u7ae0\u3002<\/p>\n<p>Pydantic \u7684\u57fa\u790e\u4ecb\u7d39<\/p>\n<h1>\u8bfb\u53d6\u73af\u5883\u53d8\u91cf<\/h1>\n<p>\u5047\u8bbe\u8bbe\u7f6e\u4e86\u4ee5\u4e0b\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># bash\u5f62\u5f0f<\/span>\r\n<span class=\"nb\">export <\/span><span class=\"nv\">REDIS_HOST_NAME<\/span><span class=\"o\">=<\/span>localhost\r\n<span class=\"nb\">export <\/span><span class=\"nv\">REDIS_PORT<\/span><span class=\"o\">=<\/span>6379\r\n<\/code><\/pre>\n<p>\u5982\u679c\u4f7f\u7528pydantic\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4ee3\u7801\u8fdb\u884c\u8bfb\u53d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">pydantic<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">BaseSettings<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Settings<\/span><span class=\"p\">(<\/span><span class=\"n\">BaseSettings<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">redis_host_name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">str<\/span>\r\n    <span class=\"n\">redis_port<\/span><span class=\"p\">:<\/span> <span class=\"nb\">int<\/span>\r\n\r\n<span class=\"n\">settings<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Settings<\/span><span class=\"p\">()<\/span>\r\n\r\n<span class=\"k\">print<\/span><span class=\"p\">(<\/span><span class=\"n\">settings<\/span><span class=\"p\">.<\/span><span class=\"n\">redis_host_name<\/span><span class=\"p\">)<\/span>\r\n<span class=\"c1\"># =&gt; localhost\r\n<\/span><span class=\"k\">print<\/span><span class=\"p\">(<\/span><span class=\"n\">settings<\/span><span class=\"p\">.<\/span><span class=\"n\">redis_port<\/span><span class=\"p\">)<\/span>\r\n<span class=\"c1\"># =&gt; 6379\r\n<\/span><span class=\"k\">print<\/span><span class=\"p\">(<\/span><span class=\"nb\">type<\/span><span class=\"p\">(<\/span><span class=\"n\">settings<\/span><span class=\"p\">.<\/span><span class=\"n\">redis_port<\/span><span class=\"p\">))<\/span>\r\n<span class=\"c1\"># =&gt; &lt;class 'int'&gt;\r\n<\/span><\/code><\/pre>\n<p>\u5982\u679c\u73af\u5883\u53d8\u91cf\u672a\u8bbe\u7f6e\u6216\u7c7b\u578b\u8f6c\u6362\u5931\u8d25\uff0c\u5219\u4f1a\u62a5\u544a\u9a8c\u8bc1\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>pydantic.error_wrappers.ValidationError: 1 validation error for Settings\r\nredis_port\r\n  value is not a valid integer (type=type_error.integer)\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528dotenv<\/h1>\n<p>\u4e3a\u4e86\u7b80\u5316\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf\u7684\u8fc7\u7a0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u540d\u4e3a.env\u7684\u6587\u4ef6\u683c\u5f0f\u3002\u867d\u7136\u8fd9\u662f\u5173\u4e8enode.js\u7684\u6587\u7ae0\uff0c\u4f46\u6211\u8ba4\u4e3a\u8fd9\u7bc7\u6587\u7ae0\u5f88\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<p>\u4f7f\u7528 .env \u6587\u4ef6\u4ee3\u66ff\u73af\u5883\u53d8\u91cf (dotenv)\u3002<\/p>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u4f7f\u7528 pip install python-dotenv \u6216\u8005 pip install pydantic[dotenv] \u547d\u4ee4\u5b89\u88c5 python-dotenv \u5305\u3002<\/p>\n<p>\u5047\u8bbe\u6709\u4e00\u4e2a\u5982\u4e0b\u7684 .env \u6587\u4ef6\uff0c<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">REDIS_HOST_NAME<\/span><span class=\"o\">=<\/span>localhost\r\n<span class=\"nv\">REDIS_PORT<\/span><span class=\"o\">=<\/span>6379\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u7684\u4ee3\u7801\u53ef\u4ee5\u7528\u6765\u8bfb\u53d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">pydantic<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">BaseSettings<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Settings<\/span><span class=\"p\">(<\/span><span class=\"n\">BaseSettings<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">redis_host_name<\/span><span class=\"p\">:<\/span> <span class=\"nb\">str<\/span>\r\n    <span class=\"n\">redis_port<\/span><span class=\"p\">:<\/span> <span class=\"nb\">int<\/span>\r\n\r\n    <span class=\"k\">class<\/span> <span class=\"nc\">Config<\/span><span class=\"p\">:<\/span>\r\n        <span class=\"n\">env_file<\/span> <span class=\"o\">=<\/span> <span class=\"s\">'.env'<\/span>\r\n\r\n<span class=\"n\">settings<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Settings<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<h1>\u66f4\u591a\u8be6\u7ec6\u529f\u80fd<\/h1>\n<p>\u6211\u8ba4\u4e3a\u6211\u5df2\u7ecf\u4ecb\u7ecd\u4e86\u4e00\u4e9b\u5728\u65e5\u5e38\u5f00\u53d1\u4e2d\u5e38\u7528\u7684\u73af\u5883\u53d8\u91cf\u76f8\u5173\u7684\u4fbf\u5229\u529f\u80fd\u3002\u5982\u679c\u4f60\u60f3\u8fdb\u4e00\u6b65\u4e86\u89e3\uff0c\u53ef\u4ee5\u9605\u8bfb\u5b98\u65b9\u6587\u6863\u4e2d\u76f8\u5173\u90e8\u5206\u3002<\/p>\n<p>\u8bbe\u7f6e\u7ba1\u7406 &#8211; pydantic<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f53\u4f60\u5b9e\u65bd\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u5904\u7406\u73af\u5883\u53d8\u91cf\u6709\u70b9\u9ebb\u70e6\uff0c\u4e0d\u662f\u5417\uff1f \u5f53\u4f7f\u7528Python\u8fdb\u884c\u5b9e\u73b0\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u540d\u4e3apydantic [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34193","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>\u4f7f\u7528pydantic\u5728Python\u4e2d\u8bfb\u53d6\u73af\u5883\u53d8\u91cf\u975e\u5e38\u65b9\u4fbf - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, 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