{"id":3164,"date":"2025-05-31T16:31:58","date_gmt":"2025-06-04T08:44:58","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3164"},"modified":"2025-06-04T16:31:58","modified_gmt":"2025-06-04T08:44:58","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84subclasscheck%e5%8a%9f%e8%83%bd-2","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84subclasscheck%e5%8a%9f%e8%83%bd-2\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Python \u4e2d\u7684 `issubclass()` \u51fd\u5f0f\uff1a\u5b50\u985e\u5225\u8207\u7236\u985e\u5225\u7684\u95dc\u4fc2\u6aa2\u67e5"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Python, issubclass, \u5b50\u985e\u5225, \u7236\u985e\u5225, \u7e7c\u627f\"><\/p>\n<h1>\u6df1\u5165\u4e86\u89e3 Python \u4e2d\u7684 `issubclass()` \u51fd\u5f0f<\/h1>\n<p>\u5728 Python \u4e2d\uff0c`issubclass()` \u51fd\u5f0f\u662f\u4e00\u500b\u7528\u4f86\u6aa2\u67e5\u5b50\u985e\u5225\u8207\u7236\u985e\u5225\u4e4b\u9593\u95dc\u4fc2\u7684\u5f37\u5927\u5de5\u5177\u3002\u5b83\u4e0d\u50c5\u80fd\u5920\u6aa2\u67e5\u5b50\u985e\u5225\u662f\u5426\u76f4\u63a5\u7e7c\u627f\u81ea\u67d0\u500b\u7236\u985e\u5225\uff0c\u9084\u80fd\u6aa2\u67e5\u5b50\u985e\u5225\u662f\u5426\u7e7c\u627f\u81ea\u591a\u500b\u7236\u985e\u5225\uff0c\u9019\u5728\u9762\u5c0d\u8907\u96dc\u7684\u7e7c\u627f\u7d50\u69cb\u6642\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p><!--more--><\/p>\n<p>`issubclass()` \u51fd\u5f0f\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: python\">\nissubclass(sub, sup)\n<\/pre>\n<p>\u5728\u9019\u88e1\uff0c`sub` \u4ee3\u8868\u5b50\u985e\u5225\uff0c`sup` \u4ee3\u8868\u7236\u985e\u5225\u3002\u51fd\u5f0f\u6703\u56de\u50b3 `True` \u6216 `False`\uff0c\u8868\u793a\u5b50\u985e\u5225\u662f\u5426\u7e7c\u627f\u81ea\u7236\u985e\u5225\u3002<\/p>\n<h2>\u4f7f\u7528 `issubclass()` \u7684\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u4f7f\u7528 `issubclass()` \u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre class=\"brush: python\">\nclass A:\n    pass\n\nclass B(A):\n    pass\n\nprint(issubclass(B, A))  # \u61c9\u8a72\u8f38\u51fa True\n<\/pre>\n<p>\u57f7\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"brush: python\">\nTrue\n<\/pre>\n<p>\u5f9e\u7d50\u679c\u53ef\u4ee5\u770b\u51fa\uff0c`B` \u985e\u5225\u78ba\u5be6\u7e7c\u627f\u81ea `A` \u985e\u5225\u3002<\/p>\n<h2>\u591a\u91cd\u7e7c\u627f\u7684\u4f7f\u7528\u6848\u4f8b<\/h2>\n<p>`issubclass()` \u51fd\u5f0f\u7684\u53e6\u4e00\u500b\u5f37\u5927\u529f\u80fd\u662f\u6aa2\u67e5\u5b50\u985e\u5225\u662f\u5426\u7e7c\u627f\u81ea\u591a\u500b\u7236\u985e\u5225\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u591a\u91cd\u7e7c\u627f\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre class=\"brush: python\">\nclass A:\n    pass\n\nclass B:\n    pass\n\nclass C(A, B):\n    pass\n\nprint(issubclass(C, A))  # \u61c9\u8a72\u8f38\u51fa True\nprint(issubclass(C, B))  # \u61c9\u8a72\u8f38\u51fa True\n<\/pre>\n<p>\u57f7\u884c\u7d50\u679c\uff1a<\/p>\n<pre class=\"brush: python\">\nTrue\nTrue\n<\/pre>\n<p>\u9019\u8868\u660e `C` \u985e\u5225\u78ba\u5be6\u7e7c\u627f\u81ea `A` \u548c `B` \u5169\u500b\u7236\u985e\u5225\uff0c\u9019\u5c0d\u65bc\u69cb\u5efa\u8907\u96dc\u7684\u985e\u5225\u7d50\u69cb\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2>\u6700\u4f73\u5be6\u8e10\u8207\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 `issubclass()` \u6642\uff0c\u8acb\u78ba\u4fdd\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<p>1. **\u53c3\u6578\u985e\u578b**\uff1a\u50b3\u905e\u7d66 `issubclass()` \u7684\u7b2c\u4e00\u500b\u53c3\u6578\u5fc5\u9808\u662f\u985e\u5225\uff0c\u800c\u4e0d\u662f\u5be6\u4f8b\u3002\u5982\u679c\u50b3\u905e\u5be6\u4f8b\uff0c\u6703\u5f15\u767c `TypeError`\u3002<\/p>\n<pre class=\"brush: python\">\n   # \u932f\u8aa4\u793a\u7bc4\n   a = A()\n   print(issubclass(a, A))  # \u9019\u5c07\u5f15\u767c TypeError\n   <\/pre>\n<p>2. **\u6aa2\u67e5\u591a\u91cd\u7e7c\u627f**\uff1a\u5728\u591a\u91cd\u7e7c\u627f\u7684\u60c5\u6cc1\u4e0b\uff0c\u78ba\u4fdd\u6aa2\u67e5\u908f\u8f2f\u7684\u6e05\u6670\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8907\u96dc\u6027\u3002<\/p>\n<h2>\u5ef6\u4f38\u61c9\u7528<\/h2>\n<p>\u7406\u89e3 `issubclass()` \u7684\u904b\u7528\u53ef\u4ee5\u5e6b\u52a9\u4f60\u5728\u5be6\u4f5c\u8a2d\u8a08\u6a21\u5f0f\u6216 API \u6642\uff0c\u6b63\u78ba\u5224\u65b7\u985e\u5225\u9593\u7684\u95dc\u4fc2\u3002\u9019\u5c0d\u65bc\u5927\u578b\u61c9\u7528\u7a0b\u5f0f\u7684\u67b6\u69cb\u8a2d\u8a08\u4f86\u8aaa\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3 Python \u7684\u985e\u5225\u8207\u7e7c\u627f\uff0c\u5efa\u8b70\u53c3\u8003 [Python \u7e7c\u627f\u8207\u985e\u5225\u8a2d\u8a08](https:\/\/vocus.cc) \u7684\u76f8\u95dc\u6559\u5b78\u6587\u7ae0\u3002<\/p>\n<h2>\u7e3d\u7d50<\/h2>\n<p>`issubclass()` \u51fd\u5f0f\u662f Python \u4e2d\u6aa2\u67e5\u5b50\u985e\u5225\u8207\u7236\u985e\u5225\u95dc\u4fc2\u7684\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\u3002\u7121\u8ad6\u662f\u7c21\u55ae\u7684\u55ae\u4e00\u7e7c\u627f\u9084\u662f\u8907\u96dc\u7684\u591a\u91cd\u7e7c\u627f\uff0c\u9019\u500b\u51fd\u5f0f\u90fd\u80fd\u5e6b\u52a9\u4f60\u6e05\u6670\u5730\u7406\u89e3\u985e\u5225\u4e4b\u9593\u7684\u7e7c\u627f\u7d50\u69cb\u3002<\/p>\n<h2>Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<h3>Q1: `issubclass()` \u53ef\u4ee5\u6aa2\u67e5\u54ea\u4e9b\u985e\u5225\uff1f<\/h3>\n<p>A: `issubclass()` \u53ef\u4ee5\u6aa2\u67e5\u4efb\u4f55\u985e\u5225\uff0c\u5305\u62ec\u81ea\u5b9a\u7fa9\u985e\u5225\u548c\u5167\u5efa\u985e\u5225\uff0c\u53ea\u8981\u78ba\u4fdd\u7b2c\u4e00\u500b\u53c3\u6578\u662f\u985e\u5225\u3002<\/p>\n<h3>Q2: \u5982\u679c\u50b3\u905e\u4e00\u500b\u5be6\u4f8b\u7d66 `issubclass()` \u6703\u767c\u751f\u4ec0\u9ebc\uff1f<\/h3>\n<p>A: \u5982\u679c\u50b3\u905e\u4e00\u500b\u5be6\u4f8b\u800c\u4e0d\u662f\u985e\u5225\uff0c\u5c07\u5f15\u767c `TypeError`\uff0c\u56e0\u70ba `issubclass()` \u671f\u671b\u7b2c\u4e00\u500b\u53c3\u6578\u662f\u4e00\u500b\u985e\u5225\u3002<\/p>\n<h3>Q3: \u5982\u4f55\u8655\u7406\u591a\u91cd\u7e7c\u627f\u7684\u60c5\u6cc1\uff1f<\/h3>\n<p>A: \u5728\u591a\u91cd\u7e7c\u627f\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 `issubclass()` \u6aa2\u67e5\u4efb\u4f55\u7236\u985e\u5225\uff0c\u78ba\u4fdd\u60a8\u7406\u89e3\u985e\u5225\u7684\u7e7c\u627f\u9806\u5e8f\u4ee5\u907f\u514d\u6df7\u6dc6\u3002<br \/>\n&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2Python\u4e2d\u7684Subclasscheck()\u529f\u80fd\uff0c\u53ef\u4ee5\u6aa2\u67e5\u4e00\u500b\u7269\u4ef6\u662f\u5426\u70ba\u53e6\u4e00\u500b\u7269\u4ef6\u7684\u5b50\u985e\u5225\uff0c\u4e26\u77ad\u89e3\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u6aa2\u67e5\u7269\u4ef6\u7684\u985e\u578b\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39Python\u4e2d\u7684Subclasscheck()\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u793a\u4f8b\u4f86\u89e3\u91cb\u5b83\u7684\u7528\u6cd5\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-3164","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-P2","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3164","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=3164"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3164\/revisions"}],"predecessor-version":[{"id":3165,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3164\/revisions\/3165"}],"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=3164"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3164"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3164"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}