{"id":90669,"date":"2026-08-05T19:25:02","date_gmt":"2026-08-05T11:25:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/90669.html"},"modified":"2026-08-05T19:25:02","modified_gmt":"2026-08-05T11:25:02","slug":"python%e8%bf%9b%e9%98%b6-%e6%97%a0%e5%8f%82%e6%95%b0%e8%a3%85%e9%a5%b0%e5%99%a8%e7%9a%84%e5%ae%9e%e7%8e%b0-%e5%87%bd%e6%95%b0%e5%b5%8c%e5%a5%97%e4%b8%8e%e8%bf%94%e5%9b%9e%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/90669.html","title":{"rendered":"Python\u8fdb\u9636 - \u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u5b9e\u73b0 \u51fd\u6570\u5d4c\u5957\u4e0e\u8fd4\u56de\u51fd\u6570"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260805112455-6a731d87391a9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>&#x1f44b; \u5927\u5bb6\u597d&#xff0c;\u6b22\u8fce\u6765\u5230\u6211\u7684\u6280\u672f\u535a\u5ba2&#xff01; &#x1f4da; \u5728\u8fd9\u91cc&#xff0c;\u6211\u4f1a\u5206\u4eab\u5b66\u4e60\u7b14\u8bb0\u3001\u5b9e\u6218\u7ecf\u9a8c\u4e0e\u6280\u672f\u601d\u8003&#xff0c;\u529b\u6c42\u7528\u7b80\u5355\u7684\u65b9\u5f0f\u8bb2\u6e05\u695a\u590d\u6742\u7684\u95ee\u9898\u3002 &#x1f3af; \u672c\u6587\u5c06\u56f4\u7ed5Python\u8fdb\u9636\u8fd9\u4e2a\u8bdd\u9898\u5c55\u5f00&#xff0c;\u5e0c\u671b\u80fd\u4e3a\u4f60\u5e26\u6765\u4e00\u4e9b\u542f\u53d1\u6216\u5b9e\u7528\u7684\u53c2\u8003\u3002 &#x1f331; \u65e0\u8bba\u4f60\u662f\u521a\u5165\u95e8\u7684\u65b0\u624b&#xff0c;\u8fd8\u662f\u6b63\u5728\u8fdb\u9636\u7684\u5f00\u53d1\u8005&#xff0c;\u5e0c\u671b\u4f60\u90fd\u80fd\u6709\u6240\u6536\u83b7&#xff01;<\/p>\n<hr \/>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>&#x1f40d; Python\u8fdb\u9636&#xff1a;\u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u5b9e\u73b0 \u2014\u2014 \u51fd\u6570\u5d4c\u5957\u4e0e\u8fd4\u56de\u51fd\u6570\u7684\u6df1\u5ea6\u89e3\u6790 &#x1f4a1;<\/li>\n<li>\n<ul>\n<li>&#x1f9e9; \u4ec0\u4e48\u662f\u88c5\u9970\u5668&#xff1f;\u4e3a\u4ec0\u4e48\u9700\u8981\u5b83&#xff1f;<\/li>\n<li>\n<ul>\n<li>&#x1f50d; \u4e3e\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f504; \u88c5\u9970\u5668\u7684\u8bed\u6cd5\u7cd6&#xff1a;&#064; \u7b26\u53f7<\/li>\n<li>&#x1f31f; \u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u6838\u5fc3\u7ed3\u6784<\/li>\n<li>\n<ul>\n<li>&#x1f511; \u5173\u952e\u70b9\u5206\u6790&#xff1a;<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f4da; \u51fd\u6570\u5d4c\u5957&#xff1a;\u88c5\u9970\u5668\u7684\u5e95\u5c42\u79d8\u5bc6<\/li>\n<li>\n<ul>\n<li>&#x1f9ea; \u793a\u4f8b&#xff1a;\u51fd\u6570\u5d4c\u5957\u7684\u6f14\u793a<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f3af; \u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u5b8c\u6574\u5de5\u4f5c\u6d41\u7a0b&#xff08;\u542b Mermaid \u56fe&#xff09;<\/li>\n<li>&#x1f6e0;\ufe0f \u5b9e\u6218\u6848\u4f8b&#xff1a;\u65e5\u5fd7\u8bb0\u5f55\u88c5\u9970\u5668<\/li>\n<li>&#x1f3a8; \u88c5\u9970\u5668\u94fe&#xff1a;\u591a\u4e2a\u88c5\u9970\u5668\u53e0\u52a0\u4f7f\u7528<\/li>\n<li>\u26a0\ufe0f \u5e38\u89c1\u9677\u9631\u4e0e\u89e3\u51b3\u65b9\u6848<\/li>\n<li>\n<ul>\n<li>\u274c \u9677\u96311&#xff1a;\u5fd8\u8bb0\u8fd4\u56de &#096;wrapper&#096;<\/li>\n<li>\u274c \u9677\u96312&#xff1a;\u5185\u5c42\u51fd\u6570\u65e0\u6cd5\u8bbf\u95ee\u5916\u90e8\u53d8\u91cf<\/li>\n<\/ul>\n<\/li>\n<li>&#x1f9e0; \u9ad8\u7ea7\u6280\u5de7&#xff1a;\u88c5\u9970\u5668\u4fdd\u5b58\u539f\u51fd\u6570\u5143\u4fe1\u606f<\/li>\n<li>&#x1f4ca; \u65e0\u53c2\u6570\u88c5\u9970\u5668 vs \u6709\u53c2\u6570\u88c5\u9970\u5668\u5bf9\u6bd4<\/li>\n<li>&#x1f9ea; \u7efc\u5408\u5b9e\u6218&#xff1a;\u7f13\u5b58\u88c5\u9970\u5668&#xff08;\u8bb0\u5fc6\u5316&#xff09;<\/li>\n<li>&#x1f3af; \u603b\u7ed3&#xff1a;\u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u6838\u5fc3\u8981\u70b9<\/li>\n<li>&#x1f4da; \u5ef6\u4f38\u9605\u8bfb\u63a8\u8350<\/li>\n<li>&#x1f3c1; \u7ed3\u8bed&#xff1a;\u88c5\u9970\u5668\u662f\u601d\u7ef4\u7684\u827a\u672f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>&#x1f40d; Python\u8fdb\u9636&#xff1a;\u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u5b9e\u73b0 \u2014\u2014 \u51fd\u6570\u5d4c\u5957\u4e0e\u8fd4\u56de\u51fd\u6570\u7684\u6df1\u5ea6\u89e3\u6790 &#x1f4a1;<\/h2>\n<p>\u5728Python\u7f16\u7a0b\u7684\u4e16\u754c\u91cc&#xff0c;\u88c5\u9970\u5668&#xff08;Decorator&#xff09; \u662f\u4e00\u4e2a\u6781\u5177\u9b45\u529b\u548c\u5b9e\u7528\u6027\u7684\u7279\u6027\u3002\u5b83\u4e0d\u4ec5\u8ba9\u4ee3\u7801\u66f4\u52a0\u4f18\u96c5&#xff0c;\u8fd8\u6781\u5927\u5730\u63d0\u5347\u4e86\u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u800c\u4eca\u5929\u6211\u4eec\u8981\u6df1\u5165\u63a2\u8ba8\u7684\u662f&#xff1a;\u65e0\u53c2\u6570\u88c5\u9970\u5668 \u7684\u5b9e\u73b0\u539f\u7406&#xff0c;\u4ee5\u53ca\u80cc\u540e\u7684\u6838\u5fc3\u673a\u5236\u2014\u2014\u51fd\u6570\u5d4c\u5957 \u4e0e \u8fd4\u56de\u51fd\u6570\u3002<\/p>\n<p>\u2705 \u672c\u6587\u5c06\u5e26\u4f60\u4ece\u96f6\u5f00\u59cb\u7406\u89e3\u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u672c\u8d28&#xff0c;\u901a\u8fc7\u5b9e\u9645\u4ee3\u7801\u793a\u4f8b\u3001\u53ef\u89c6\u5316\u6d41\u7a0b\u56fe&#xff08;Mermaid&#xff09;\u3001\u903b\u8f91\u62c6\u89e3&#xff0c;\u5f7b\u5e95\u638c\u63e1\u8fd9\u4e00\u9ad8\u7ea7\u6280\u5de7\u3002<\/p>\n<hr \/>\n<h3>&#x1f9e9; \u4ec0\u4e48\u662f\u88c5\u9970\u5668&#xff1f;\u4e3a\u4ec0\u4e48\u9700\u8981\u5b83&#xff1f;<\/h3>\n<p>\u5728\u65e5\u5e38\u5f00\u53d1\u4e2d&#xff0c;\u6211\u4eec\u7ecf\u5e38\u9047\u5230\u8fd9\u6837\u7684\u9700\u6c42&#xff1a;<\/p>\n<p>\u201c\u6211\u60f3\u5728\u67d0\u4e2a\u51fd\u6570\u6267\u884c\u524d\u540e\u6253\u5370\u65e5\u5fd7&#xff0c;\u4f46\u53c8\u4e0d\u60f3\u4fee\u6539\u539f\u51fd\u6570\u7684\u4ee3\u7801\u3002\u201d<\/p>\n<p>\u8fd9\u5c31\u662f\u88c5\u9970\u5668\u8bde\u751f\u7684\u521d\u8877\u3002\u5b83\u7684\u6838\u5fc3\u601d\u60f3\u662f&#xff1a;\u4e0d\u6539\u53d8\u539f\u6709\u51fd\u6570\u7684\u884c\u4e3a&#xff0c;\u901a\u8fc7\u5916\u90e8\u5305\u88c5\u7684\u65b9\u5f0f\u589e\u5f3a\u529f\u80fd\u3002<\/p>\n<h4>&#x1f50d; \u4e3e\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">say_hello<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Hello, World!&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>say_hello<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>Hello, World!<\/p>\n<p>\u73b0\u5728&#xff0c;\u6211\u4eec\u60f3\u5728 say_hello() \u6267\u884c\u524d\u548c\u540e\u5206\u522b\u52a0\u4e00\u53e5\u65e5\u5fd7\u63d0\u793a&#xff1a;<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">log_decorator<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f680; \u51fd\u6570\u5f00\u59cb\u6267\u884c&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2705 \u51fd\u6570\u6267\u884c\u5b8c\u6bd5&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<p><span class=\"token comment\"># \u4f7f\u7528\u88c5\u9970\u5668<\/span><br \/>\nsay_hello <span class=\"token operator\">&#061;<\/span> log_decorator<span class=\"token punctuation\">(<\/span>say_hello<span class=\"token punctuation\">)<\/span><br \/>\nsay_hello<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>&#x1f680; \u51fd\u6570\u5f00\u59cb\u6267\u884c&#8230;<br \/>\nHello, World!<br \/>\n\u2705 \u51fd\u6570\u6267\u884c\u5b8c\u6bd5&#xff01;<\/p>\n<p>&#x1f389; \u770b\u5230\u4e86\u5417&#xff1f;\u6211\u4eec\u6ca1\u6709\u6539\u52a8 say_hello \u51fd\u6570\u672c\u8eab&#xff0c;\u5374\u6210\u529f\u4e3a\u5176\u6dfb\u52a0\u4e86\u989d\u5916\u529f\u80fd&#xff01;<\/p>\n<p>\u8fd9\u5c31\u662f\u88c5\u9970\u5668\u7684\u9b45\u529b\u6240\u5728\u3002<\/p>\n<hr \/>\n<h3>&#x1f504; \u88c5\u9970\u5668\u7684\u8bed\u6cd5\u7cd6&#xff1a;&#064; \u7b26\u53f7<\/h3>\n<p>\u4e0a\u9762\u7684\u5199\u6cd5\u867d\u7136\u6b63\u786e&#xff0c;\u4f46\u7565\u663e\u7e41\u7410\u3002Python \u63d0\u4f9b\u4e86\u8bed\u6cd5\u7cd6 &#064; \u6765\u7b80\u5316\u8fd9\u4e2a\u8fc7\u7a0b&#xff1a;<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;log_decorator<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">say_hello<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Hello, World!&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>say_hello<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u7b49\u4ef7\u4e8e&#xff1a;<\/p>\n<p>say_hello <span class=\"token operator\">&#061;<\/span> log_decorator<span class=\"token punctuation\">(<\/span>say_hello<span class=\"token punctuation\">)<\/span><\/p>\n<p>\u6240\u4ee5&#xff0c;&#064;log_decorator \u5c31\u662f log_decorator(say_hello) \u7684\u7b80\u6d01\u5199\u6cd5\u3002<\/p>\n<hr \/>\n<h3>&#x1f31f; \u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u6838\u5fc3\u7ed3\u6784<\/h3>\n<p>\u6211\u4eec\u5148\u6765\u770b\u4e00\u4e2a\u6807\u51c6\u7684\u65e0\u53c2\u6570\u88c5\u9970\u5668\u6a21\u677f&#xff1a;<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">decorator_name<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token comment\"># \u6267\u884c\u524d\u7684\u64cd\u4f5c<\/span><br \/>\n        result <span class=\"token operator\">&#061;<\/span> func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token comment\"># \u6267\u884c\u540e\u7684\u64cd\u4f5c<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<h4>&#x1f511; \u5173\u952e\u70b9\u5206\u6790&#xff1a;<\/h4>\n<table>\n<tr>\u7279\u5f81\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u5916\u5c42\u51fd\u6570 decorator_name<\/td>\n<td>\u63a5\u6536\u88ab\u88c5\u9970\u7684\u51fd\u6570\u5bf9\u8c61\u4f5c\u4e3a\u53c2\u6570<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5c42\u51fd\u6570 wrapper<\/td>\n<td>\u5b9e\u9645\u6267\u884c\u903b\u8f91&#xff0c;\u5c01\u88c5\u539f\u51fd\u6570\u884c\u4e3a<\/td>\n<\/tr>\n<tr>\n<td>\u8fd4\u56de\u503c<\/td>\n<td>\u5fc5\u987b\u8fd4\u56de wrapper \u51fd\u6570\u5bf9\u8c61<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&#x1f4a1; \u91cd\u70b9\u6765\u4e86&#xff1a;\u88c5\u9970\u5668\u8fd4\u56de\u7684\u662f\u4e00\u4e2a\u65b0\u51fd\u6570&#xff08;wrapper&#xff09;&#xff0c;\u800c\u4e0d\u662f\u8c03\u7528\u7ed3\u679c\u3002<\/p>\n<hr \/>\n<h3>&#x1f4da; \u51fd\u6570\u5d4c\u5957&#xff1a;\u88c5\u9970\u5668\u7684\u5e95\u5c42\u79d8\u5bc6<\/h3>\n<p>\u8ba9\u6211\u4eec\u6df1\u5165\u7406\u89e3\u201c\u51fd\u6570\u5d4c\u5957\u201d\u662f\u5982\u4f55\u652f\u6491\u88c5\u9970\u5668\u5de5\u4f5c\u7684\u3002<\/p>\n<h4>&#x1f9ea; \u793a\u4f8b&#xff1a;\u51fd\u6570\u5d4c\u5957\u7684\u6f14\u793a<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">outer_func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f4e6; \u5916\u5c42\u51fd\u6570\u88ab\u8c03\u7528&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">def<\/span> <span class=\"token function\">inner_func<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2728 \u5185\u5c42\u51fd\u6570\u6b63\u5728\u8fd0\u884c&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f504; \u5916\u5c42\u51fd\u6570\u7ed3\u675f&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> inner_func<\/p>\n<p><span class=\"token comment\"># \u8c03\u7528\u5916\u5c42\u51fd\u6570<\/span><br \/>\nfunc_ref <span class=\"token operator\">&#061;<\/span> outer_func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f4cc; \u83b7\u53d6\u5230\u5185\u90e8\u51fd\u6570\u5f15\u7528&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\nfunc_ref<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u8c03\u7528 inner_func<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>&#x1f4e6; \u5916\u5c42\u51fd\u6570\u88ab\u8c03\u7528<br \/>\n&#x1f504; \u5916\u5c42\u51fd\u6570\u7ed3\u675f<br \/>\n&#x1f4cc; \u83b7\u53d6\u5230\u5185\u90e8\u51fd\u6570\u5f15\u7528<br \/>\n\u2728 \u5185\u5c42\u51fd\u6570\u6b63\u5728\u8fd0\u884c<\/p>\n<p>&#x1f50d; \u5173\u952e\u89c2\u5bdf&#xff1a;<\/p>\n<ul>\n<li>inner_func \u5b9a\u4e49\u5728 outer_func \u5185\u90e8\u3002<\/li>\n<li>\u5373\u4f7f outer_func \u6267\u884c\u5b8c\u6bd5&#xff0c;\u53ea\u8981 inner_func \u7684\u5f15\u7528\u88ab\u4fdd\u7559&#xff0c;\u5b83\u4f9d\u7136\u53ef\u4ee5\u6b63\u5e38\u8c03\u7528\u3002<\/li>\n<li>\u8fd9\u5c31\u662f\u6240\u8c13\u7684\u201c\u95ed\u5305&#xff08;Closure&#xff09;\u201d\u73b0\u8c61\u3002<\/li>\n<\/ul>\n<p>&#x1f449; \u5728\u88c5\u9970\u5668\u4e2d&#xff0c;wrapper \u5c31\u662f\u4e00\u4e2a\u5178\u578b\u7684\u95ed\u5305\u51fd\u6570&#xff0c;\u5b83\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u4f5c\u7528\u57df\u4e2d\u7684\u53d8\u91cf&#xff0c;\u5305\u62ec\u88ab\u88c5\u9970\u7684\u51fd\u6570 func\u3002<\/p>\n<hr \/>\n<h3>&#x1f3af; \u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u5b8c\u6574\u5de5\u4f5c\u6d41\u7a0b&#xff08;\u542b Mermaid \u56fe&#xff09;<\/h3>\n<p>\u8ba9\u6211\u4eec\u7528 Mermaid \u53ef\u89c6\u5316\u6574\u4e2a\u6d41\u7a0b&#xff1a;<\/p>\n<p> \u6e32\u67d3\u9519\u8bef: Mermaid \u6e32\u67d3\u5931\u8d25: Parse error on line 3: &#8230; B &#8211;&gt; C[\u5b9a\u4e49\u5185\u90e8\u5305\u88c5\u51fd\u6570 (wrapper)] C &#8211;&gt; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;^ Expecting &#039;SQE&#039;, &#039;DOUBLECIRCLEEND&#039;, &#039;PE&#039;, &#039;-)&#039;, &#039;STADIUMEND&#039;, &#039;SUBROUTINEEND&#039;, &#039;PIPE&#039;, &#039;CYLINDEREND&#039;, &#039;DIAMOND_STOP&#039;, &#039;TAGEND&#039;, &#039;TRAPEND&#039;, &#039;INVTRAPEND&#039;, &#039;UNICODE_TEXT&#039;, &#039;TEXT&#039;, &#039;TAGSTART&#039;, got &#039;PS&#039; <\/p>\n<p>&#x1f4cc; \u8fd9\u5f20\u56fe\u63ed\u793a\u4e86\u88c5\u9970\u5668\u7684\u672c\u8d28&#xff1a;<\/p>\n<li>\u88c5\u9970\u5668\u51fd\u6570\u88ab\u8c03\u7528\u4e00\u6b21&#xff08;\u4f20\u5165\u539f\u51fd\u6570&#xff09;<\/li>\n<li>\u5b83\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u51fd\u6570&#xff08;wrapper&#xff09;<\/li>\n<li>\u539f\u51fd\u6570\u540d\u88ab\u91cd\u65b0\u7ed1\u5b9a\u4e3a\u8fd9\u4e2a\u65b0\u51fd\u6570<\/li>\n<li>\u540e\u7eed\u8c03\u7528\u5373\u6267\u884c wrapper \u5185\u90e8\u903b\u8f91<\/li>\n<hr \/>\n<h3>&#x1f6e0;\ufe0f \u5b9e\u6218\u6848\u4f8b&#xff1a;\u65e5\u5fd7\u8bb0\u5f55\u88c5\u9970\u5668<\/h3>\n<p>\u6211\u4eec\u6765\u5b9e\u73b0\u4e00\u4e2a\u66f4\u5b9e\u7528\u7684\u65e5\u5fd7\u88c5\u9970\u5668&#xff0c;\u652f\u6301\u65f6\u95f4\u6233\u8bb0\u5f55\u3002<\/p>\n<p><span class=\"token keyword\">import<\/span> time<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">log_execution_time<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        start_time <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f1\ufe0f \u51fd\u6570 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>func<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u5f00\u59cb\u6267\u884c&#8230;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        result <span class=\"token operator\">&#061;<\/span> func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        end_time <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        duration <span class=\"token operator\">&#061;<\/span> end_time <span class=\"token operator\">&#8211;<\/span> start_time<br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f1\ufe0f \u51fd\u6570 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>func<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u6267\u884c\u8017\u65f6: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>duration<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.4f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u79d2&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;log_execution_time<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">slow_function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u23f3 \u6b63\u5728\u6a21\u62df\u8017\u65f6\u64cd\u4f5c&#8230;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    time<span class=\"token punctuation\">.<\/span>sleep<span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2705 \u6a21\u62df\u4efb\u52a1\u5b8c\u6210&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>slow_function<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>\u23f1\ufe0f \u51fd\u6570 slow_function \u5f00\u59cb\u6267\u884c&#8230;<br \/>\n\u23f3 \u6b63\u5728\u6a21\u62df\u8017\u65f6\u64cd\u4f5c&#8230;<br \/>\n\u2705 \u6a21\u62df\u4efb\u52a1\u5b8c\u6210&#xff01;<br \/>\n\u23f1\ufe0f \u51fd\u6570 slow_function \u6267\u884c\u8017\u65f6: 1.0012 \u79d2<\/p>\n<p>\u2705 \u6210\u529f\u5b9e\u73b0\u4e86\u5bf9\u4efb\u610f\u51fd\u6570\u7684\u6027\u80fd\u76d1\u63a7&#xff0c;\u4e14\u65e0\u9700\u4fee\u6539\u5176\u6e90\u7801\u3002<\/p>\n<hr \/>\n<h3>&#x1f3a8; \u88c5\u9970\u5668\u94fe&#xff1a;\u591a\u4e2a\u88c5\u9970\u5668\u53e0\u52a0\u4f7f\u7528<\/h3>\n<p>\u4f60\u8fd8\u53ef\u4ee5\u5c06\u591a\u4e2a\u88c5\u9970\u5668\u53e0\u52a0\u4f7f\u7528&#xff0c;\u5b83\u4eec\u4f1a\u6309\u987a\u5e8f\u4ece\u4e0b\u5f80\u4e0a\u6267\u884c\u3002<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">debug_log<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f50d; \u8c03\u7528\u51fd\u6570: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>func<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">timing<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        start <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        result <span class=\"token operator\">&#061;<\/span> func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        end <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u26a1 \u6267\u884c\u65f6\u95f4: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>end <span class=\"token operator\">&#8211;<\/span> start<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.4f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">s&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;debug_log<\/span><br \/>\n<span class=\"token decorator annotation punctuation\">&#064;timing<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">greet<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;&#x1f44b; \u4f60\u597d&#xff0c;\u4e16\u754c&#xff01;&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token string\">&#034;\u95ee\u5019\u6210\u529f&#034;<\/span><\/p>\n<p>greet<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>&#x1f50d; \u8c03\u7528\u51fd\u6570: greet<br \/>\n&#x1f44b; \u4f60\u597d&#xff0c;\u4e16\u754c&#xff01;<br \/>\n\u26a1 \u6267\u884c\u65f6\u95f4: 0.0001s<\/p>\n<p>&#x1f4a1; \u6ce8\u610f&#xff1a;\u88c5\u9970\u5668\u7684\u987a\u5e8f\u5f88\u91cd\u8981&#xff01;<\/p>\n<ul>\n<li>\u6700\u9760\u8fd1\u51fd\u6570\u5b9a\u4e49\u7684\u90a3\u4e2a\u6700\u5148\u6267\u884c\u3002<\/li>\n<li>\u672c\u4f8b\u4e2d &#064;debug_log \u5148\u4e8e &#064;timing \u6267\u884c\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>\u26a0\ufe0f \u5e38\u89c1\u9677\u9631\u4e0e\u89e3\u51b3\u65b9\u6848<\/h3>\n<h4>\u274c \u9677\u96311&#xff1a;\u5fd8\u8bb0\u8fd4\u56de wrapper<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">bad_decorator<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u26a0\ufe0f \u9519\u8bef\u793a\u8303&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># \u7f3a\u5c11 return wrapper \u2192 \u8fd4\u56de None<\/span><br \/>\n    <span class=\"token comment\"># \u5bfc\u81f4\u540e\u7eed\u8c03\u7528\u62a5\u9519<\/span><\/p>\n<p>\u2705 \u6b63\u786e\u505a\u6cd5&#xff1a;<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">good_decorator<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u2705 \u6b63\u786e\u793a\u8303&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> wrapper  <span class=\"token comment\"># \u2705 \u5fc5\u987b\u8fd4\u56de<\/span><\/p>\n<hr \/>\n<h4>\u274c \u9677\u96312&#xff1a;\u5185\u5c42\u51fd\u6570\u65e0\u6cd5\u8bbf\u95ee\u5916\u90e8\u53d8\u91cf<\/h4>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">create_counter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    count <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">increment<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        count <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span>  <span class=\"token comment\"># \u274c \u62a5\u9519&#xff1a;UnboundLocalError<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> count<br \/>\n    <span class=\"token keyword\">return<\/span> increment<\/p>\n<p>&#x1f525; \u9519\u8bef\u539f\u56e0&#xff1a;count \u5728 increment \u4e2d\u88ab\u8d4b\u503c&#xff0c;\u88ab\u89c6\u4e3a\u5c40\u90e8\u53d8\u91cf&#xff0c;\u4f46\u672a\u521d\u59cb\u5316\u3002<\/p>\n<p>\u2705 \u89e3\u51b3\u65b9\u6848&#xff1a;\u4f7f\u7528 nonlocal \u58f0\u660e<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">create_counter<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    count <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">increment<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">nonlocal<\/span> count  <span class=\"token comment\"># \u2705 \u58f0\u660e\u4e3a\u975e\u5c40\u90e8\u53d8\u91cf<\/span><br \/>\n        count <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> count<br \/>\n    <span class=\"token keyword\">return<\/span> increment<\/p>\n<p>counter <span class=\"token operator\">&#061;<\/span> create_counter<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>counter<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># 1<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>counter<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># 2<\/span><\/p>\n<p>&#x1f4cc; \u8fd9\u6b63\u662f\u88c5\u9970\u5668\u4e2d\u5e38\u89c1\u7684\u72b6\u6001\u7ba1\u7406\u65b9\u5f0f&#xff0c;\u5982\u8ba1\u6570\u5668\u3001\u7f13\u5b58\u7b49\u3002<\/p>\n<hr \/>\n<h3>&#x1f9e0; \u9ad8\u7ea7\u6280\u5de7&#xff1a;\u88c5\u9970\u5668\u4fdd\u5b58\u539f\u51fd\u6570\u5143\u4fe1\u606f<\/h3>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u88c5\u9970\u5668\u4f1a\u8986\u76d6\u51fd\u6570\u7684\u5143\u6570\u636e&#xff08;\u5982 __name__, __doc__&#xff09;\u3002<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;log_execution_time<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">my_function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u8fd9\u662f\u4e00\u4e2a\u6d4b\u8bd5\u51fd\u6570&#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;I&#039;m a test function&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>my_function<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u8f93\u51fa: wrapper \u274c<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>my_function<span class=\"token punctuation\">.<\/span>__doc__<span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># \u8f93\u51fa: None \u274c<\/span><\/p>\n<p>\u274c \u8fd9\u663e\u7136\u4e0d\u7b26\u5408\u9884\u671f\u3002<\/p>\n<p>\u2705 \u89e3\u51b3\u65b9\u6cd5&#xff1a;\u4f7f\u7528 functools.wraps<\/p>\n<p><span class=\"token keyword\">from<\/span> functools <span class=\"token keyword\">import<\/span> wraps<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">log_execution_time<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token decorator annotation punctuation\">&#064;wraps<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u2705 \u4fdd\u6301\u539f\u51fd\u6570\u5c5e\u6027<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        start_time <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f1\ufe0f \u51fd\u6570 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>func<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u5f00\u59cb\u6267\u884c&#8230;&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        result <span class=\"token operator\">&#061;<\/span> func<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        end_time <span class=\"token operator\">&#061;<\/span> time<span class=\"token punctuation\">.<\/span>time<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        duration <span class=\"token operator\">&#061;<\/span> end_time <span class=\"token operator\">&#8211;<\/span> start_time<br \/>\n        <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;\u23f1\ufe0f \u51fd\u6570 <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>func<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u6267\u884c\u8017\u65f6: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>duration<span class=\"token punctuation\">:<\/span><span class=\"token format-spec\">.4f<\/span><span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\"> \u79d2&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> result<br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;log_execution_time<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">my_function<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token triple-quoted-string string\">&#034;&#034;&#034;\u8fd9\u662f\u4e00\u4e2a\u6d4b\u8bd5\u51fd\u6570&#034;&#034;&#034;<\/span><br \/>\n    <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;I&#039;m a test function&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>my_function<span class=\"token punctuation\">.<\/span>__name__<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u8f93\u51fa: my_function \u2705<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>my_function<span class=\"token punctuation\">.<\/span>__doc__<span class=\"token punctuation\">)<\/span>   <span class=\"token comment\"># \u8f93\u51fa: \u8fd9\u662f\u4e00\u4e2a\u6d4b\u8bd5\u51fd\u6570 \u2705<\/span><\/p>\n<p>&#x1f3af; &#064;wraps \u662f\u6bcf\u4e2a\u88c5\u9970\u5668\u5f00\u53d1\u8005\u5fc5\u987b\u638c\u63e1\u7684\u5de5\u5177&#xff01;<\/p>\n<hr \/>\n<h3>&#x1f4ca; \u65e0\u53c2\u6570\u88c5\u9970\u5668 vs \u6709\u53c2\u6570\u88c5\u9970\u5668\u5bf9\u6bd4<\/h3>\n<table>\n<tr>\u7279\u6027\u65e0\u53c2\u6570\u88c5\u9970\u5668\u6709\u53c2\u6570\u88c5\u9970\u5668<\/tr>\n<tbody>\n<tr>\n<td>\u53c2\u6570\u6570\u91cf<\/td>\n<td>0<\/td>\n<td>1&#043;<\/td>\n<\/tr>\n<tr>\n<td>\u7ed3\u6784<\/td>\n<td>def decorator(func): &#8230;<\/td>\n<td>def decorator(*args, **kwargs): def wrapper(func): &#8230;<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u5c42\u51fd\u6570\u662f\u5426\u63a5\u53d7\u53c2\u6570<\/td>\n<td>\u5426<\/td>\n<td>\u662f<\/td>\n<\/tr>\n<tr>\n<td>\u4f7f\u7528\u65b9\u5f0f<\/td>\n<td>&#064;decorator<\/td>\n<td>&#064;decorator(arg)<\/td>\n<\/tr>\n<tr>\n<td>\u590d\u6742\u5ea6<\/td>\n<td>\u7b80\u5355<\/td>\n<td>\u8f83\u590d\u6742<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&#x1f517; \u66f4\u591a\u7ec6\u8282\u53ef\u53c2\u8003 Python\u5b98\u65b9\u6587\u6863 &#8211; Decorators<\/p>\n<hr \/>\n<h3>&#x1f9ea; \u7efc\u5408\u5b9e\u6218&#xff1a;\u7f13\u5b58\u88c5\u9970\u5668&#xff08;\u8bb0\u5fc6\u5316&#xff09;<\/h3>\n<p>\u6211\u4eec\u5b9e\u73b0\u4e00\u4e2a\u7ecf\u5178\u7684\u7f13\u5b58\u88c5\u9970\u5668&#xff0c;\u907f\u514d\u91cd\u590d\u8ba1\u7b97\u3002<\/p>\n<p><span class=\"token keyword\">from<\/span> functools <span class=\"token keyword\">import<\/span> wraps<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">memoize<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    cache <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span>  <span class=\"token comment\"># \u5b58\u50a8\u5df2\u8ba1\u7b97\u7684\u7ed3\u679c<\/span><\/p>\n<p>    <span class=\"token decorator annotation punctuation\">&#064;wraps<\/span><span class=\"token punctuation\">(<\/span>func<span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">wrapper<\/span><span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>args<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">**<\/span>kwargs<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        key <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">(<\/span>args<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> <span class=\"token builtin\">str<\/span><span class=\"token punctuation\">(<\/span><span class=\"token builtin\">sorted<\/span><span class=\"token punctuation\">(<\/span>kwargs<span class=\"token punctuation\">.<\/span>items<span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> key <span class=\"token keyword\">in<\/span> cache<span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f9e9; \u7f13\u5b58\u547d\u4e2d: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>key<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> cache<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span><br \/>\n        <span class=\"token keyword\">else<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string-interpolation\"><span class=\"token string\">f&#034;&#x1f4be; \u6b63\u5728\u8ba1\u7b97: <\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>key<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#034;<\/span><\/span><span class=\"token punctuation\">)<\/span><br \/>\n            result <span class=\"token operator\">&#061;<\/span> func<span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>args<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">**<\/span>kwargs<span class=\"token punctuation\">)<\/span><br \/>\n            cache<span class=\"token punctuation\">[<\/span>key<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> result<br \/>\n            <span class=\"token keyword\">return<\/span> result<br \/>\n    <span class=\"token keyword\">return<\/span> wrapper<\/p>\n<p><span class=\"token decorator annotation punctuation\">&#064;memoize<\/span><br \/>\n<span class=\"token keyword\">def<\/span> <span class=\"token function\">fibonacci<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> n <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> n<br \/>\n    <span class=\"token keyword\">return<\/span> fibonacci<span class=\"token punctuation\">(<\/span>n<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#043;<\/span> fibonacci<span class=\"token punctuation\">(<\/span>n<span class=\"token operator\">&#8211;<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>fibonacci<span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u7b2c\u4e00\u6b21\u8ba1\u7b97<\/span><br \/>\n<span class=\"token keyword\">print<\/span><span class=\"token punctuation\">(<\/span>fibonacci<span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span>  <span class=\"token comment\"># \u7b2c\u4e8c\u6b21\u76f4\u63a5\u547d\u4e2d\u7f13\u5b58<\/span><\/p>\n<p>\u8f93\u51fa&#xff1a;<\/p>\n<p>&#x1f4be; \u6b63\u5728\u8ba1\u7b97: (5,)<br \/>\n&#x1f4be; \u6b63\u5728\u8ba1\u7b97: (4,)<br \/>\n&#x1f4be; \u6b63\u5728\u8ba1\u7b97: (3,)<br \/>\n&#x1f4be; \u6b63\u5728\u8ba1\u7b97: (2,)<br \/>\n&#x1f4be; \u6b63\u5728\u8ba1\u7b97: (1,)<br \/>\n&#x1f4be; \u6b63\u5728\u8ba1\u7b97: (0,)<br \/>\n&#x1f9e9; \u7f13\u5b58\u547d\u4e2d: (5,)<br \/>\n15<\/p>\n<p>&#x1f9e0; \u8fd9\u6b63\u662f\u51fd\u6570\u5f0f\u7f16\u7a0b\u4e2d\u201c\u8bb0\u5fc6\u5316\u201d\u7684\u5178\u578b\u5e94\u7528&#xff0c;\u6781\u5927\u63d0\u5347\u6027\u80fd\u3002<\/p>\n<hr \/>\n<h3>&#x1f3af; \u603b\u7ed3&#xff1a;\u65e0\u53c2\u6570\u88c5\u9970\u5668\u7684\u6838\u5fc3\u8981\u70b9<\/h3>\n<p>\u2705 \u4f60\u5df2\u7ecf\u638c\u63e1\u4e86\u4ee5\u4e0b\u5173\u952e\u80fd\u529b&#xff1a;<\/p>\n<li>\u51fd\u6570\u5d4c\u5957&#xff1a;\u5185\u5c42\u51fd\u6570\u80fd\u8bbf\u95ee\u5916\u5c42\u4f5c\u7528\u57df\u53d8\u91cf&#xff08;\u95ed\u5305&#xff09;<\/li>\n<li>\u8fd4\u56de\u51fd\u6570&#xff1a;\u88c5\u9970\u5668\u5fc5\u987b\u8fd4\u56de\u4e00\u4e2a\u51fd\u6570\u5bf9\u8c61<\/li>\n<li>&#064; \u8bed\u6cd5\u7cd6&#xff1a;\u7b80\u5316\u88c5\u9970\u5668\u5e94\u7528<\/li>\n<li>functools.wraps&#xff1a;\u4fdd\u6301\u539f\u51fd\u6570\u5143\u4fe1\u606f<\/li>\n<li>\u591a\u88c5\u9970\u5668\u94fe\u5f0f\u8c03\u7528&#xff1a;\u7406\u89e3\u6267\u884c\u987a\u5e8f<\/li>\n<li>\u5e38\u89c1\u9677\u9631\u89c4\u907f&#xff1a;\u5982\u5fd8\u8bb0 return\u3001nonlocal \u4f7f\u7528<\/li>\n<hr \/>\n<h3>&#x1f4da; \u5ef6\u4f38\u9605\u8bfb\u63a8\u8350<\/h3>\n<p>\u5982\u679c\u4f60\u60f3\u7ee7\u7eed\u6df1\u5165\u5b66\u4e60&#xff0c;\u63a8\u8350\u9605\u8bfb&#xff1a;<\/p>\n<ul>\n<li>\n<p>Real Python &#8211; Decorators &#x1f449; \u4e00\u7bc7\u975e\u5e38\u5168\u9762\u7684\u5165\u95e8\u6307\u5357&#xff0c;\u5305\u542b\u5927\u91cf\u771f\u5b9e\u6848\u4f8b\u3002<\/p>\n<\/li>\n<li>\n<p>Python Docs &#8211; Functions &#x1f449; \u5b98\u65b9\u6587\u6863&#xff0c;\u6743\u5a01\u53ef\u9760&#xff0c;\u9002\u5408\u67e5\u9605\u3002<\/p>\n<\/li>\n<li>\n<p>GeeksforGeeks &#8211; Decorators in Python &#x1f449; \u4e30\u5bcc\u7684\u4ee3\u7801\u793a\u4f8b&#xff0c;\u9002\u5408\u5feb\u901f\u4e0a\u624b\u3002<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>&#x1f3c1; \u7ed3\u8bed&#xff1a;\u88c5\u9970\u5668\u662f\u601d\u7ef4\u7684\u827a\u672f<\/h3>\n<p>&#x1f3a8; \u88c5\u9970\u5668\u4e0d\u4ec5\u662f\u8bed\u6cd5\u6280\u5de7&#xff0c;\u66f4\u662f\u4e00\u79cd\u8bbe\u8ba1\u54f2\u5b66&#xff1a;\u5728\u4e0d\u7834\u574f\u539f\u6709\u7ed3\u6784\u7684\u524d\u63d0\u4e0b&#xff0c;\u52a8\u6001\u589e\u5f3a\u529f\u80fd\u3002<\/p>\n<p>\u5f53\u4f60\u719f\u7ec3\u638c\u63e1\u65e0\u53c2\u6570\u88c5\u9970\u5668\u540e&#xff0c;\u4f60\u4f1a\u53d1\u73b0&#xff1a;<\/p>\n<ul>\n<li>\u4ee3\u7801\u66f4\u52a0\u6a21\u5757\u5316<\/li>\n<li>\u4e1a\u52a1\u903b\u8f91\u4e0e\u6a2a\u5207\u5173\u6ce8\u70b9\u5206\u79bb<\/li>\n<li>\u65e5\u5fd7\u3001\u6743\u9650\u3001\u7f13\u5b58\u3001\u91cd\u8bd5\u7b49\u901a\u7528\u903b\u8f91\u53ef\u590d\u7528<\/li>\n<\/ul>\n<p>&#x1f4a1; 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