{"id":314844,"date":"2024-05-20T23:44:47","date_gmt":"2024-05-20T15:44:47","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/314844.html"},"modified":"2024-05-20T23:44:53","modified_gmt":"2024-05-20T15:44:53","slug":"except-%e5%9c%a8-python-%e4%b8%ad%e6%9c%89%e5%93%aa%e4%ba%9b%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/314844.html","title":{"rendered":"except \u5728 python \u4e2d\u6709\u54ea\u4e9b\u4f5c\u7528"},"content":{"rendered":"<p style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/27034444\/912b9645-4441-4ceb-8b14-b6bcf6ec4914.webp\" alt=\"except \u5728 python \u4e2d\u6709\u54ea\u4e9b\u4f5c\u7528\" \/><\/p>\n<p><p><strong><code>except<\/code>\u5728Python\u4e2d\u7684\u4f5c\u7528\u4e3b\u8981\u5305\u62ec\u6355\u83b7\u5f02\u5e38\u3001\u5904\u7406\u5f02\u5e38\u3001\u65e5\u5fd7\u8bb0\u5f55\u3001\u5f02\u5e38\u94fe\u4ee5\u53ca\u9519\u8bef\u7c7b\u578b\u5206\u652f\u5904\u7406<\/strong>\u3002\u901a\u8fc7\u4f7f\u7528<code>except<\/code>\u8bed\u53e5\uff0c\u7a0b\u5e8f\u5458\u53ef\u4ee5\u6709\u6548\u5730\u5bf9\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u51fa\u73b0\u7684\u4e0d\u540c\u7c7b\u578b\u548c\u7ea7\u522b\u7684\u9519\u8bef\u8fdb\u884c\u5904\u7406\uff0c\u63d0\u9ad8\u7a0b\u5e8f\u7684\u5065\u58ee\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<strong>\u5176\u4e2d\uff0c\u5904\u7406\u5f02\u5e38\u662f<code>except<\/code>\u6700\u76f4\u63a5\u4e14\u5e38\u89c1\u7684\u7528\u9014<\/strong>\uff0c\u901a\u8fc7\u6355\u83b7\u6307\u5b9a\u7c7b\u578b\u7684\u9519\u8bef\u540e\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u6267\u884c\u4e00\u6bb5\u81ea\u5b9a\u4e49\u7684\u9519\u8bef\u5904\u7406\u4ee3\u7801\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u7ec8\u6b62\uff0c\u4f7f\u5f97\u7a0b\u5e8f\u53ef\u4ee5\u5728\u9047\u5230\u9519\u8bef\u65f6\u66f4\u52a0\u4f18\u96c5\u5730\u6062\u590d\u6216\u544a\u77e5\u7528\u6237\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u6355\u83b7\u5f02\u5e38<\/h3>\n<\/p>\n<p><p>Python\u4e2d\u7684<code>try-except<\/code>\u8bed\u53e5\u4f7f\u7a0b\u5e8f\u5458\u80fd\u591f\u9884\u5148\u6355\u83b7\u53ef\u80fd\u5728\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u53d1\u751f\u7684\u9519\u8bef\uff0c\u5e76\u4e3a\u8fd9\u4e9b\u6f5c\u5728\u7684\u9519\u8bef\u63d0\u4f9b\u5904\u7406\u673a\u5236\u3002\u8fd9\u79cd\u5f02\u5e38\u5904\u7406\u673a\u5236\u9632\u6b62\u4e86\u7a0b\u5e8f\u56e0\u4e3a\u672a\u5904\u7406\u7684\u9519\u8bef\u800c\u7a81\u7136\u505c\u6b62\u6267\u884c\uff0c\u63d0\u9ad8\u4e86\u7a0b\u5e8f\u7684\u9c81\u68d2\u6027\u3002<\/p>\n<\/p>\n<p><p>\u5728\u4f7f\u7528<code>except<\/code>\u6355\u83b7\u5f02\u5e38\u65f6\uff0c\u53ef\u4ee5\u6307\u5b9a\u60f3\u8981\u6355\u83b7\u7684\u9519\u8bef\u7c7b\u578b\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u9519\u8bef\u7c7b\u578b\uff0c<code>except<\/code>\u5c06\u4f1a\u6355\u83b7\u6240\u6709\u7c7b\u578b\u7684\u9519\u8bef\u3002\u8fd9\u662f\u4e00\u4e2a\u6709\u6548\u7684\u5f02\u5e38\u5904\u7406\u7b56\u7565\uff0c\u4f46\u5728\u5b9e\u8df5\u4e2d\uff0c\u5efa\u8bae\u5c3d\u53ef\u80fd\u6355\u83b7\u5177\u4f53\u7684\u5f02\u5e38\u7c7b\u578b\uff0c\u8fd9\u6837\u53ef\u4ee5\u66f4\u7cbe\u786e\u5730\u5904\u7406\u9519\u8bef\u3002<\/p>\n<\/p>\n<p><h3>\u4e8c\u3001\u5904\u7406\u5f02\u5e38<\/h3>\n<\/p>\n<p><p>\u4e00\u65e6\u5f02\u5e38\u88ab\u6355\u83b7\uff0c<code>except<\/code>\u8bed\u53e5\u5757\u5185\u7684\u4ee3\u7801\u5c06\u4f1a\u88ab\u6267\u884c\u3002\u8fd9\u4e3a\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u5904\u7406\u5f02\u5e38\u7684\u673a\u4f1a\uff0c\u6bd4\u5982\u4fee\u590d\u95ee\u9898\u3001\u56de\u6eda\u4e8b\u52a1\u3001\u91ca\u653e\u8d44\u6e90\u6216\u8005\u7ed9\u7528\u6237\u63d0\u4f9b\u9519\u8bef\u4fe1\u606f\u7b49\u3002\u5904\u7406\u5f02\u5e38\u5141\u8bb8\u7a0b\u5e8f\u5728\u9047\u5230\u9519\u8bef\u65f6\u80fd\u591f\u7ee7\u7eed\u6267\u884c\uff0c\u6216\u8005\u5728\u5173\u95ed\u524d\u4f18\u96c5\u5730\u8fdb\u884c\u6e05\u7406\u5de5\u4f5c\u3002<\/p>\n<\/p>\n<p><p>\u5f02\u5e38\u5904\u7406\u4e0d\u4ec5\u4ec5\u662f\u5173\u4e8e\u4fee\u590d\u9519\u8bef\uff0c\u66f4\u591a\u7684\u65f6\u5019\u662f\u5173\u4e8e\u5982\u4f55\u5728\u51fa\u73b0\u9519\u8bef\u65f6\u4f18\u96c5\u5730\u5931\u8d25\u3002\u901a\u8fc7\u5408\u7406\u5730\u4f7f\u7528<code>except<\/code>\u5904\u7406\u7a0b\u5e8f\u4e2d\u53ef\u80fd\u51fa\u73b0\u7684\u9519\u8bef\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u6784\u5efa\u51fa\u65e2\u5065\u58ee\u53c8\u6613\u4e8e\u7ef4\u62a4\u7684\u5e94\u7528\u3002<\/p>\n<\/p>\n<p><h3>\u4e09\u3001\u65e5\u5fd7\u8bb0\u5f55<\/h3>\n<\/p>\n<p><p>\u51fa\u73b0\u9519\u8bef\u65f6\uff0c\u5229\u7528<code>except<\/code>\u53ef\u4ee5\u8fdb\u884c\u9519\u8bef\u65e5\u5fd7\u7684\u8bb0\u5f55\u3002\u8bb0\u5f55\u9519\u8bef\u4fe1\u606f\u662f\u8bca\u65ad\u95ee\u9898\u7684\u4e00\u4e2a\u91cd\u8981\u6b65\u9aa4\uff0c\u901a\u8fc7\u65e5\u5fd7\u6587\u4ef6\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u4e86\u89e3\u7a0b\u5e8f\u51fa\u9519\u7684\u5177\u4f53\u4f4d\u7f6e\u548c\u539f\u56e0\uff0c\u4ece\u800c\u66f4\u5feb\u5730\u5b9a\u4f4d\u5e76\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n<\/p>\n<p><p>\u5728<code>except<\/code>\u5757\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528Python\u7684\u65e5\u5fd7\u6a21\u5757\u8bb0\u5f55\u9519\u8bef\u4fe1\u606f\uff0c\u5305\u62ec\u9519\u8bef\u7c7b\u578b\u3001\u9519\u8bef\u4fe1\u606f\u548c\u5806\u6808\u8ddf\u8e2a\u7b49\u3002\u5408\u7406\u5229\u7528\u65e5\u5fd7\u8bb0\u5f55\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u5e94\u7528\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8c03\u8bd5\u6027\u3002<\/p>\n<\/p>\n<p><h3>\u56db\u3001\u5f02\u5e38\u94fe<\/h3>\n<\/p>\n<p><p>Python 3\u4e2d\u5f15\u5165\u4e86\u5f02\u5e38\u94fe\u7684\u6982\u5ff5\uff0c\u5373\u5728\u5904\u7406\u4e00\u4e2a\u5f02\u5e38\u7684\u8fc7\u7a0b\u4e2d\u53c8\u89e6\u53d1\u4e86\u53e6\u4e00\u4e2a\u5f02\u5e38\u3002\u4f7f\u7528<code>except<\/code>\u53ef\u4ee5\u901a\u8fc7<code>from<\/code>\u5173\u952e\u5b57\u94fe\u63a5\u539f\u59cb\u5f02\u5e38\u548c\u65b0\u7684\u5f02\u5e38\uff0c\u63d0\u4f9b\u66f4\u591a\u7684\u4e0a\u4e0b\u6587\u4fe1\u606f\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u89e3\u51b3\u590d\u6742\u7684\u9519\u8bef\u60c5\u51b5\u3002<\/p>\n<\/p>\n<p><p>\u5f02\u5e38\u94fe\u5bf9\u4e8e\u8c03\u8bd5\u548c\u6392\u67e5\u9519\u8bef\u975e\u5e38\u6709\u7528\uff0c\u7279\u522b\u662f\u5728\u590d\u6742\u7684\u5e94\u7528\u4e2d\uff0c\u4e00\u4e2a\u64cd\u4f5c\u53ef\u80fd\u6d89\u53ca\u591a\u4e2a\u6b65\u9aa4\uff0c\u6bcf\u4e2a\u6b65\u9aa4\u90fd\u6709\u53ef\u80fd\u51fa\u9519\u3002\u901a\u8fc7\u5f02\u5e38\u94fe\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u5230\u9519\u8bef\u53d1\u751f\u7684\u6574\u4e2a\u8fc7\u7a0b\u3002<\/p>\n<\/p>\n<p><h3>\u4e94\u3001\u9519\u8bef\u7c7b\u578b\u5206\u652f\u5904\u7406<\/h3>\n<\/p>\n<p><p>\u5728\u5b9e\u8df5\u4e2d\uff0c\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u9047\u5230\u591a\u79cd\u7c7b\u578b\u7684\u9519\u8bef\uff0c\u800c\u8fd9\u4e9b\u9519\u8bef\u9700\u8981\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u5904\u7406\u3002\u901a\u8fc7\u5728<code>try<\/code>\u8bed\u53e5\u540e\u9762\u4f7f\u7528\u591a\u4e2a<code>except<\/code>\u5b50\u53e5\uff0c\u7a0b\u5e8f\u53ef\u4ee5\u6839\u636e\u9519\u8bef\u7684\u7c7b\u578b\u6267\u884c\u4e0d\u540c\u7684\u9519\u8bef\u5904\u7406\u4ee3\u7801\u3002<\/p>\n<\/p>\n<p><p>\u5bf9\u4e0d\u540c\u7c7b\u578b\u7684\u9519\u8bef\u6267\u884c\u4e0d\u540c\u7684\u5904\u7406\u64cd\u4f5c\u662f\u6784\u5efa\u9ad8\u8d28\u91cfPython\u5e94\u7528\u7684\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\u3002\u6bd4\u5982\uff0c\u5bf9\u4e8eIO\u9519\u8bef\u53ef\u80fd\u9700\u8981\u91cd\u8bd5\u64cd\u4f5c\uff0c\u5bf9\u4e8e\u503c\u9519\u8bef\u53ef\u80fd\u9700\u8981\u63d0\u9192\u7528\u6237\u68c0\u67e5\u8f93\u5165\uff0c\u5bf9\u4e8e\u7cfb\u7edf\u9519\u8bef\u53ef\u80fd\u9700\u8981\u505c\u6b62\u7a0b\u5e8f\u5e76\u8bb0\u5f55\u65e5\u5fd7\u3002\u9002\u5f53\u5730\u4f7f\u7528\u9519\u8bef\u7c7b\u578b\u5206\u652f\u5904\u7406\u53ef\u4ee5\u4f7f\u7a0b\u5e8f\u66f4\u52a0\u7075\u6d3b\u548c\u5065\u58ee\u3002<\/p>\n<\/p>\n<p><p>\u901a\u8fc7\u8fd9\u4e94\u4e2a\u65b9\u9762\u7684\u4f5c\u7528\uff0c<code>except<\/code>\u5728Python\u7a0b\u5e8f\u4e2d\u626e\u6f14\u7740\u81f3\u5173\u91cd\u8981\u7684\u89d2\u8272\uff0c\u5b83\u4e0d\u4ec5\u53ef\u4ee5\u5e2e\u52a9\u7a0b\u5e8f\u5458\u6355\u83b7\u548c\u5904\u7406\u5f02\u5e38\uff0c\u800c\u4e14\u8fd8\u80fd\u63d0\u9ad8\u7a0b\u5e8f\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002\u5229\u7528<code>except<\/code>\u7684\u9002\u5f53\u4f7f\u7528\uff0c\u53ef\u4ee5\u6784\u5efa\u51fa\u66f4\u52a0\u5065\u58ee\u3001\u7a33\u5b9a\u548c\u6613\u4e8e\u8c03\u8bd5\u7684Python\u5e94\u7528\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p><strong>What are the uses of &#039;except&#039; in Python?<\/strong><\/p>\n<ul>\n<li>\n<p><strong>What is the purpose of using &#039;except&#039; in Python?<\/strong><br \/>\nIn Python, the &#039;except&#039; keyword is used for handling exceptions. It allows you to catch and handle errors that may occur during the execution of your code.<\/p>\n<\/li>\n<li>\n<p><strong>How does the &#039;except&#039; statement work in Python error handling?<\/strong><br \/>\nWhen an exception is r<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>sed in Python, the &#039;except&#039; statement is used to specify the code block that should be executed if that specific exception occurs. This helps in preventing the program from crashing and allows you to gracefully handle the error.<\/p>\n<\/li>\n<li>\n<p><strong>Can you provide examples of using &#039;except&#039; in Python?<\/strong><br \/>\nSure! Let&#039;s say you have a piece of code that attempts to open a file. If the file doesn&#039;t exist, it will raise a FileNotFoundError. By using the &#039;except&#039; statement, you can catch this specific exception and perform some alternative action, such as displaying an error message or creating a new file.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"except\u5728Python\u4e2d\u7684\u4f5c\u7528\u4e3b\u8981\u5305\u62ec\u6355\u83b7\u5f02\u5e38\u3001\u5904\u7406\u5f02\u5e38\u3001\u65e5\u5fd7\u8bb0\u5f55\u3001\u5f02\u5e38\u94fe\u4ee5\u53ca\u9519\u8bef\u7c7b\u578b\u5206\u652f\u5904\u7406\u3002\u901a\u8fc7\u4f7f\u7528e [&hellip;]","protected":false},"author":3,"featured_media":314848,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/314844"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=314844"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/314844\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/314848"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=314844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=314844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=314844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}