{"id":204420,"date":"2025-05-29T12:06:02","date_gmt":"2025-05-29T04:06:02","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204420\/"},"modified":"2025-05-29T12:06:02","modified_gmt":"2025-05-29T04:06:02","slug":"python-%e5%bc%82%e5%b8%b8%e5%a4%84%e7%90%86%e4%b8%8d%e5%b8%a6-except-%e6%8a%a5%e9%94%99%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e5%88%97%e8%a1%a8%e4%b8%ad%e5%87%ba%e7%8e%b0%e4%ba%86%e9%87%8d%e5%a4%8d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204420\/","title":{"rendered":"Python \u5f02\u5e38\u5904\u7406\u4e0d\u5e26 except \u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48\u5217\u8868\u4e2d\u51fa\u73b0\u4e86\u91cd\u590d\u5143\u7d20\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>Python \u5f02\u5e38\u5904\u7406\u4e0d\u5e26 except \u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48\u5217\u8868\u4e2d\u51fa\u73b0\u4e86\u91cd\u590d\u5143\u7d20\uff1f<\/h1>\n<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241107\/1730952227672c3c2331110.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>python \u5f02\u5e38\u5904\u7406\u4e0d\u5e26 except \u62a5\u9519\u8be6\u89e3<\/strong><\/p>\n<p>\u5728 python \u4e2d\uff0c\u5f53 try \u5757\u4e2d\u51fa\u73b0\u5f02\u5e38\u65f6\uff0c\u9700\u8981\u4f7f\u7528 except \u5b50\u53e5\u6765\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\u3002\u5982\u679c try \u5757\u4e2d\u51fa\u73b0\u5f02\u5e38\uff0c\u4f46\u6ca1\u6709\u5339\u914d\u7684 except \u5b50\u53e5\uff0c\u5f02\u5e38\u5c06\u88ab\u4f20\u9012\u5230\u4e0a\u5c42 try \u5757\u6216\u7a0b\u5e8f\u7684\u6700\u4e0a\u5c42\uff0c\u6700\u7ec8\u5bfc\u81f4\u7a0b\u5e8f\u9000\u51fa\u3002<\/p>\n<p>\u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u4e2d\uff0cy \u5217\u8868\u4e2d\u4e0d\u5b58\u5728\u5143\u7d20 b\uff0c\u56e0\u6b64 remove(b) \u64cd\u4f5c\u5c06\u629b\u51fa valueerror \u5f02\u5e38\u3002\u7136\u800c\uff0c\u6ca1\u6709\u5339\u914d\u7684 except \u5b50\u53e5\u6765\u5904\u7406\u6b64\u5f02\u5e38\uff0c\u56e0\u6b64\u5f02\u5e38\u88ab\u4f20\u9012\u5230\u4e86 finally \u5757\u3002<\/p>\n<p>\u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\uff0cfinally \u5757\u603b\u662f\u4f1a\u88ab\u6267\u884c\u3002\u5728 finally \u5757\u4e2d\uff0cy \u5217\u8868\u4f7f\u7528 y.append(b) \u91cd\u65b0\u6dfb\u52a0\u4e86 element b\uff0c\u8fd9\u662f\u5bfc\u81f4 y \u4e2d\u5b58\u5728\u91cd\u590d\u5143\u7d20\u7684\u539f\u56e0\u3002\u56e0\u6b64\uff0c\u6700\u7ec8\u8f93\u51fa\u7684 y \u5217\u8868\u4e0d\u6b63\u786e\uff08\u503c\u4e3a [&#8216;b&#8217;, &#8216;c&#8217;, &#8216;b&#8217;, &#8216;a&#8217;]\uff09\u3002<\/p>\n<p>\u6b63\u786e\u7684\u505a\u6cd5\u662f\u4f7f\u7528 except \u5b50\u53e5\u6765\u6355\u83b7 valueerror \u5f02\u5e38\uff0c\u5e76\u5728\u5176\u4e2d\u5904\u7406\u5f02\u5e38\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728 except \u5757\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u6253\u5370\u9519\u8bef\u4fe1\u606f\u5e76\u8df3\u8fc7\u5f53\u524d\u5faa\u73af\u8fed\u4ee3\u7684\u4ee3\u7801\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>try:\n    y.remove(b)\nexcept ValueError:\n    print(\"\u5143\u7d20\u4e0d\u5b58\u5728\uff0c\u8df3\u8fc7\u6b64\u5faa\u73af\")\n    continue\nfinally:\n    y.append(b)<\/pre>\n<p>\u8fd9\u6837\uff0c\u5f53\u5143\u7d20\u4e0d\u5b58\u5728\u65f6\uff0c\u4e0d\u4f1a\u629b\u51fa\u5f02\u5e38\uff0c\u5e76\u4e14\u53ef\u4ee5\u7ee7\u7eed\u6267\u884c\u5faa\u73af\u3002<\/p>\n<p>\u4eca\u5929\u5173\u4e8e\u300aPython \u5f02\u5e38\u5904\u7406\u4e0d\u5e26 except \u62a5\u9519\uff1a\u4e3a\u4ec0\u4e48\u5217\u8868\u4e2d\u51fa\u73b0\u4e86\u91cd\u590d\u5143\u7d20\uff1f\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u516c\u4f17\u53f7\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python \u5f02\u5e38\u5904\u7406\u4e0d\u5e26 ex&#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-204420","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204420","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=204420"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204420\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}