{"id":2872,"date":"2025-05-28T16:50:21","date_gmt":"2025-06-04T09:32:20","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=2872"},"modified":"2025-06-04T16:50:21","modified_gmt":"2025-06-04T09:32:20","slug":"python%e4%b8%ad%e7%9a%84raise%ef%bc%9a%e5%a6%82%e4%bd%95%e5%bc%95%e7%99%bc%e7%95%b0%e5%b8%b8","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/python%e4%b8%ad%e7%9a%84raise%ef%bc%9a%e5%a6%82%e4%bd%95%e5%bc%95%e7%99%bc%e7%95%b0%e5%b8%b8\/","title":{"rendered":"Python\u4e2d\u7684raise\u8a9e\u53e5\uff1a\u5f15\u767c\u7570\u5e38\u7684\u6700\u4f73\u5be6\u8e10\uff082025\u6700\u65b0\u7248\uff09"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Python, raise, \u5f15\u767c\u7570\u5e38, \u932f\u8aa4\u8655\u7406, \u81ea\u5b9a\u7fa9\u7570\u5e38\"><\/p>\n<p>\u5728Python\u4e2d\uff0c`raise`\u8a9e\u53e5\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u4e3b\u8981\u7528\u65bc\u5f15\u767c\u7570\u5e38\u3002\u5b83\u5141\u8a31\u958b\u767c\u8005\u5728\u7a0b\u5f0f\u4e2d\u5c07\u63a7\u5236\u6b0a\u4ea4\u7d66Python\u7684\u7570\u5e38\u8655\u7406\u6a5f\u5236\uff0c\u800c\u4e0d\u662f\u8b93\u7a0b\u5f0f\u7e7c\u7e8c\u57f7\u884c\u4e0b\u53bb\u3002\u638c\u63e1`raise`\u7684\u7528\u6cd5\u5c0d\u65bc\u64b0\u5beb\u5065\u58ef\u7684Python\u61c9\u7528\u7a0b\u5e8f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<p>## \u4f7f\u7528raise\u5f15\u767c\u5167\u5efa\u7570\u5e38<\/p>\n<p>`raise`\u8a9e\u53e5\u53ef\u4ee5\u7528\u4f86\u62cb\u51fa\u5167\u5efa\u7570\u5e38\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u7bc4\uff0c\u9019\u500b\u51fd\u6578\u6703\u6aa2\u67e5\u8f38\u5165\u7684\u53c3\u6578\u662f\u5426\u7b26\u5408\u8981\u6c42\uff1a<\/p>\n<p>&#8220;`python<br \/>\ndef check_input(input_value):<br \/>\n    if input_value < 0:\n        raise ValueError(\"Input must be greater than or equal to 0\")\n    else:\n        return input_value\n```\n\n\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u5982\u679c\u8f38\u5165\u7684\u53c3\u6578\u5c0f\u65bc0\uff0c\u5247\u6703\u5f15\u767c`ValueError`\u7570\u5e38\uff0c\u4e26\u986f\u793a\u932f\u8aa4\u8a0a\u606f\u201cInput must be greater than or equal to 0\u201d\u3002\u9019\u6a23\u53ef\u4ee5\u8b93\u4f7f\u7528\u8005\u77e5\u9053\u4ed6\u5011\u7684\u8f38\u5165\u4e0d\u7b26\u5408\u8981\u6c42\uff0c\u4e26\u505a\u51fa\u76f8\u61c9\u7684\u8abf\u6574\u3002\n\n## \u81ea\u5b9a\u7fa9\u7570\u5e38\u7684\u4f7f\u7528\n\n\u9664\u4e86\u5167\u5efa\u7570\u5e38\uff0c\u958b\u767c\u8005\u9084\u53ef\u4ee5\u4f7f\u7528`raise`\u8a9e\u53e5\u4f86\u62cb\u51fa\u81ea\u5b9a\u7fa9\u7570\u5e38\u3002\u9019\u6a23\u53ef\u4ee5\u6839\u64da\u61c9\u7528\u7684\u9700\u6c42\u4f86\u63d0\u4f9b\u66f4\u5177\u9ad4\u7684\u932f\u8aa4\u8a0a\u606f\u3002\u4ee5\u4e0b\u662f\u81ea\u5b9a\u7fa9\u7570\u5e38\u7684\u7bc4\u4f8b\uff1a\n\n```python\nclass MyError(Exception):\n    \"\"\"\u81ea\u5b9a\u7fa9\u7570\u5e38\u985e\u5225\"\"\"\n    pass\n\ndef check_input(input_value):\n    if input_value < 0:\n        raise MyError(\"Input must be greater than or equal to 0\")\n    else:\n        return input_value\n```\n\n\u5728\u9019\u6bb5\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u5982\u679c\u8f38\u5165\u7684\u53c3\u6578\u5c0f\u65bc0\uff0c\u5247\u6703\u5f15\u767c`MyError`\u7570\u5e38\uff0c\u4e26\u986f\u793a\u932f\u8aa4\u8a0a\u606f\u201cInput must be greater than\u6216\u7b49\u65bc 0\u201d\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u7570\u5e38\u8655\u7406\u66f4\u52a0\u6e05\u6670\u548c\u53ef\u63a7\u3002\n\n## \u932f\u8aa4\u6392\u9664\u6280\u5de7\n\n\u7576\u4f7f\u7528`raise`\u8a9e\u53e5\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u932f\u8aa4\u6392\u9664\u7684\u5efa\u8b70\uff1a\n\n1. **\u6aa2\u67e5\u7570\u5e38\u985e\u578b**\uff1a\u78ba\u4fdd\u62cb\u51fa\u7684\u7570\u5e38\u985e\u578b\u6b63\u78ba\u3002\u4f8b\u5982\uff0c\u4f7f\u7528`raise ValueError`\u800c\u4e0d\u662f`raise ValueError()`\u3002\n2. **\u6355\u7372\u7570\u5e38**\uff1a\u5728\u8abf\u8a66\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528`try`\u548c`except`\u8a9e\u53e5\u4f86\u6355\u7372\u7570\u5e38\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u932f\u8aa4\u767c\u751f\u7684\u539f\u56e0\u3002\n\n```python\ntry:\n    check_input(-1)\nexcept MyError as e:\n    print(f\"Caught an error: {e}\")\n```\n\n## \u5ef6\u4f38\u61c9\u7528\n\n`raise`\u8a9e\u53e5\u7684\u61c9\u7528\u4e0d\u50c5\u9650\u65bc\u932f\u8aa4\u6aa2\u67e5\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u6d41\u7a0b\u63a7\u5236\u548c\u8cc7\u6e90\u7ba1\u7406\u3002\u4f8b\u5982\uff0c\u5728\u9032\u884c\u6587\u4ef6\u64cd\u4f5c\u6642\uff0c\u82e5\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u53ef\u4ee5\u4f7f\u7528`raise`\u4f86\u63d0\u793a\u7528\u6236\u3002\n\n## \u7e3d\u7d50\n\n\u7e3d\u7684\u4f86\u8aaa\uff0cPython\u4e2d\u7684`raise`\u8a9e\u53e5\u662f\u5f15\u767c\u7570\u5e38\u7684\u91cd\u8981\u5de5\u5177\u3002\u7121\u8ad6\u662f\u62cb\u51fa\u5167\u5efa\u7570\u5e38\u9084\u662f\u81ea\u5b9a\u7fa9\u7570\u5e38\uff0c\u5408\u7406\u7684\u4f7f\u7528`raise`\u53ef\u4ee5\u8b93\u7a0b\u5f0f\u7684\u932f\u8aa4\u8655\u7406\u66f4\u70ba\u6709\u6548\uff0c\u63d0\u5347\u61c9\u7528\u7a0b\u5f0f\u7684\u5065\u58ef\u6027\u3002\n\n\u60f3\u4e86\u89e3\u66f4\u591aPython\u7de8\u7a0b\u7684\u6280\u5de7\u8207\u6559\u5b78\uff0c\u53ef\u4ee5\u53c3\u8003[\u9019\u88e1](https:\/\/vocus.cc)\uff0c\u9019\u88e1\u6709\u8a31\u591a\u5be6\u7528\u7684\u8cc7\u6e90\u4f9b\u4f60\u5b78\u7fd2\u3002\n\n## Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09\n\n**Q1: \u4ec0\u9ebc\u662f`raise`\u8a9e\u53e5\u7684\u4e3b\u8981\u7528\u9014\uff1f**  \nA1: `raise`\u8a9e\u53e5\u4e3b\u8981\u7528\u65bc\u5f15\u767c\u7570\u5e38\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u63a7\u5236\u7a0b\u5f0f\u6d41\u7a0b\u53ca\u932f\u8aa4\u8655\u7406\u3002\n\n**Q2: \u5982\u4f55\u5b9a\u7fa9\u81ea\u5b9a\u7fa9\u7570\u5e38\u985e\u5225\uff1f**  \nA2: \u53ef\u4ee5\u901a\u904e\u7e7c\u627f`Exception`\u985e\u4f86\u5b9a\u7fa9\u81ea\u5b9a\u7fa9\u7570\u5e38\u985e\u5225\uff0c\u4e26\u4f7f\u7528`raise`\u8a9e\u53e5\u4f86\u62cb\u51fa\u9019\u4e9b\u7570\u5e38\u3002\n\n**Q3: \u4f7f\u7528`raise`\u8a9e\u53e5\u6642\u5e38\u898b\u7684\u932f\u8aa4\u6709\u54ea\u4e9b\uff1f**  \nA3: \u5e38\u898b\u932f\u8aa4\u5305\u62ec\u7570\u5e38\u985e\u578b\u4e0d\u6b63\u78ba\u3001\u672a\u6b63\u78ba\u6355\u7372\u7570\u5e38\u7b49\u3002\u4f7f\u7528`try`\u548c`except`\u80fd\u5e6b\u52a9\u8abf\u8a66\u9019\u4e9b\u554f\u984c\u3002\n---\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python\u4e2d\u7684raise\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u65bc\u5f15\u767c\u7570\u5e38\uff0c\u8b93\u7a0b\u5e8f\u505c\u6b62\u57f7\u884c\uff0c\u4e26\u63d0\u4f9b\u932f\u8aa4\u8a0a\u606f\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528raise\u4f86\u5f15\u767c\u7570\u5e38\uff0c\u4ee5\u53ca\u5982\u4f55\u8655\u7406\u9019\u4e9b\u7570\u5e38\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-2872","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-Kk","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2872","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=2872"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2872\/revisions"}],"predecessor-version":[{"id":2873,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2872\/revisions\/2873"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=2872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}