{"id":204215,"date":"2025-05-29T14:40:38","date_gmt":"2025-05-29T06:40:38","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204215\/"},"modified":"2025-05-29T14:40:38","modified_gmt":"2025-05-29T06:40:38","slug":"python-%e4%b8%ad%e4%b8%ba%e4%bb%80%e4%b9%88-try-%e4%bb%a3%e7%a0%81%e5%9d%97%e4%b8%8d%e5%b8%a6-except-%e4%bc%9a%e6%8a%a5%e9%94%99%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204215\/","title":{"rendered":"Python \u4e2d\u4e3a\u4ec0\u4e48 try \u4ee3\u7801\u5757\u4e0d\u5e26 except \u4f1a\u62a5\u9519\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Python \u4e2d\u4e3a\u4ec0\u4e48 try \u4ee3\u7801\u5757\u4e0d\u5e26 except \u4f1a\u62a5\u9519\uff1f<\/h1>\n<p>\u73cd\u60dc\u65f6\u95f4\uff0c\u52e4\u594b\u5b66\u4e60\uff01\u4eca\u5929\u7ed9\u5927\u5bb6\u5e26\u6765\uff0c\u6b63\u6587\u5185\u5bb9\u4e3b\u8981\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\u7b49\u7b49\uff0c\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\uff0c\u6216\u8005\u662f\u5bf9<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u6587\u7ae0<\/span>\u6709\u7591\u95ee\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u6211\uff01\u540e\u9762\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u5185\u5bb9\u7684\uff0c\u5e0c\u671b\u90fd\u80fd\u5e2e\u5230\u6b63\u5728\u5b66\u4e60\u7684\u5927\u5bb6\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241101\/173044174967247215f230d.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>try\u3001except \u4e0e finally \u8bed\u53e5\u7684\u4f7f\u7528<\/strong><\/p>\n<p>\u5728 python \u4e2d\uff0c\u5f02\u5e38\u5904\u7406\u662f\u901a\u8fc7 try\u3001except \u548c finally \u8bed\u53e5\u6765\u5b9e\u73b0\u7684\u3002try \u5757\u5305\u542b\u53ef\u80fd\u5f15\u53d1\u5f02\u5e38\u7684\u4ee3\u7801\uff0cexcept \u5757\u6307\u5b9a\u4e86\u5982\u4f55\u5904\u7406\u7279\u5b9a\u7c7b\u578b\u7684\u5f02\u5e38\uff0c\u800c finally \u5757\u59cb\u7ec8\u5728 try \u548c except \u5757\u6267\u884c\u540e\u6267\u884c\u3002<\/p>\n<p><strong>\u4e3a\u4ec0\u4e48\u4e0d\u5e26 except \u7684\u5f02\u5e38\u5904\u7406\u4f1a\u62a5\u9519\uff1f<\/strong><\/p>\n<p>\u7a0b\u5e8f\u4e2d\u4f7f\u7528 try \u548c finally \u4f46\u4e0d\u5e26 except \u5b50\u53e5\u7684\u539f\u56e0\u662f\uff1a<\/p>\n<ul>\n<li><strong>\u5f02\u5e38\u672a\u88ab\u5904\u7406\uff1a<\/strong>try \u5757\u4e2d\u7684\u4ee3\u7801\u5f15\u53d1\u4e86\u4e00\u4e2a\u5f02\u5e38\uff0c\u4f46\u6ca1\u6709\u5bf9\u5e94\u7684 except \u5757\u6765\u5904\u7406\u5b83\u3002<\/li>\n<li><strong>\u5f02\u5e38\u88ab\u4f20\u9012\uff1a<\/strong>\u5f02\u5e38\u4f20\u9012\u5230\u4e0a\u5c42 try \u5757\u6216\u5230\u7a0b\u5e8f\u7684\u6700\u4e0a\u5c42\u3002\u6700\u4e0a\u5c42\u7684\u7a0b\u5e8f\u6ca1\u6709 try \u5757\u6765\u5904\u7406\u5b83\uff0c\u56e0\u6b64\u7a0b\u5e8f\u5c06\u7ec8\u6b62\u3002<\/li>\n<\/ul>\n<p><strong>\u89e3\u51b3\u65b9\u6cd5\uff1a<\/strong><\/p>\n<p>\u8981\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u5728 try \u5757\u4e2d\u4f7f\u7528 except \u5b50\u53e5\u6765\u663e\u5f0f\u5904\u7406\u5f02\u5e38\u3002\u4f8b\u5982\uff1a<\/p>\n<pre>try:\n    y.remove(b)\nexcept ValueError:\n    pass\nfinally:\n    y.append(b)<\/pre>\n<p>\u5728\u8fd9\u4e2a\u4ee3\u7801\u4e2d\uff0cexcept valueerror \u7528\u4e8e\u5904\u7406 y \u4e2d\u4e0d\u5b58\u5728 b \u5143\u7d20\u7684\u60c5\u51b5\u3002\u901a\u8fc7\u663e\u5f0f\u5904\u7406\u5f02\u5e38\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u6b63\u5e38\u7ee7\u7eed\u6267\u884c\uff0c\u800c\u4e0d\u4f1a\u4e2d\u65ad\u3002<\/p>\n<p><strong>finally \u5757\u7684\u4f7f\u7528\uff1a<\/strong><\/p>\n<p>finally \u5757\u7528\u4e8e\u786e\u4fdd\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\u90fd\u6267\u884c\u5176\u5305\u542b\u7684\u4ee3\u7801\uff0c\u65e0\u8bba\u662f\u5426\u5f15\u53d1\u4e86\u5f02\u5e38\u3002\u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff0cfinally \u5757\u7528\u4e8e\u5c06 b \u6dfb\u52a0\u56de y \u5217\u8868\u4e2d\uff0c\u65e0\u8bba\u662f\u5426\u5f15\u53d1\u4e86 valueerror \u5f02\u5e38\u3002<\/p>\n<p>\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aPython \u4e2d\u4e3a\u4ec0\u4e48 try \u4ee3\u7801\u5757\u4e0d\u5e26 except \u4f1a\u62a5\u9519\uff1f\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python \u4e2d\u4e3a\u4ec0\u4e48 try &#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204215","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204215","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204215"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204215\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}