{"id":2940,"date":"2025-06-02T17:16:43","date_gmt":"2025-06-04T09:21:43","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=2940"},"modified":"2025-06-04T17:16:43","modified_gmt":"2025-06-04T09:21:43","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%adissubclass%e5%87%bd%e6%95%b8%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%ba%86%e8%a7%a3python%e4%b8%adissubclass%e5%87%bd%e6%95%b8%e7%9a%84%e7%94%a8%e6%b3%95\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3 Python \u4e2d\u7684 `issubclass()` \u51fd\u6578\uff1a\u7528\u6cd5\u3001\u7bc4\u4f8b\u8207\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"<p><meta name=\"keywords\" content=\"Python, issubclass, Python \u6559\u5b78, Python \u51fd\u6578\"><\/p>\n<h1>\u6df1\u5165\u4e86\u89e3 Python \u4e2d\u7684 <code>issubclass()<\/code> \u51fd\u6578<\/h1>\n<p>\u5728 Python \u4e2d\uff0c`issubclass()` \u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u7528\u4f86\u6aa2\u67e5\u4e00\u500b\u985e\u5225\u662f\u5426\u70ba\u53e6\u4e00\u500b\u985e\u5225\u7684\u5b50\u985e\u5225\u3002\u9019\u500b\u51fd\u6578\u5728\u7269\u4ef6\u5c0e\u5411\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u7406\u89e3\u985e\u5225\u4e4b\u9593\u7684\u7e7c\u627f\u95dc\u4fc2\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e `issubclass()` \u7684\u8a9e\u6cd5\u3001\u4f7f\u7528\u7bc4\u4f8b\u3001\u932f\u8aa4\u6392\u9664\u4ee5\u53ca\u5ef6\u4f38\u61c9\u7528\u3002<\/p>\n<h2><code>issubclass()<\/code> \u51fd\u6578\u7684\u8a9e\u6cd5<\/h2>\n<p>`issubclass()` \u51fd\u6578\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre class=\"brush: python\">\nissubclass(sub, sup)\n<\/pre>\n<p>\u5176\u4e2d\uff0c`sub` \u662f\u8981\u6aa2\u67e5\u7684\u5b50\u985e\u5225\uff0c\u800c `sup` \u5247\u662f\u8981\u6aa2\u67e5\u7684\u7236\u985e\u5225\u3002\u7576 `sub` \u662f `sup` \u7684\u5b50\u985e\u5225\u6642\uff0c\u51fd\u6578\u6703\u8fd4\u56de `True`\uff0c\u5426\u5247\u8fd4\u56de `False`\u3002<\/p>\n<h2>\u7bc4\u4f8b\u7a0b\u5f0f\u78bc<\/h2>\n<p>\u4e0b\u9762\u7684\u7a0b\u5f0f\u78bc\u793a\u7bc4\u4e86 `issubclass()` \u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<pre class=\"brush: python\">\nclass A:\n    pass\n\nclass B(A):\n    pass\n\nprint(issubclass(B, A))  # \u8f38\u51fa: True\nprint(issubclass(A, B))  # \u8f38\u51fa: False\n<\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u5169\u500b\u985e\u5225\uff1a`A` \u548c `B`\uff0c\u5176\u4e2d `B` \u662f `A` \u7684\u5b50\u985e\u5225\u3002\u7136\u5f8c\uff0c\u6211\u5011\u4f7f\u7528 `issubclass()` \u51fd\u6578\u6aa2\u67e5 `B` \u662f\u5426\u70ba `A` \u7684\u5b50\u985e\u5225\uff0c\u7d50\u679c\u8fd4\u56de `True`\uff0c\u8868\u793a `B` \u662f `A` \u7684\u5b50\u985e\u5225\u3002\u6b64\u5916\uff0c\u6211\u5011\u4e5f\u6aa2\u67e5\u4e86 `A` \u662f\u5426\u70ba `B` \u7684\u5b50\u985e\u5225\uff0c\u7d50\u679c\u8fd4\u56de `False`\u3002<\/p>\n<h2>\u932f\u8aa4\u6392\u9664<\/h2>\n<p>\u5728\u4f7f\u7528 `issubclass()` \u51fd\u6578\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u4ee5\u4e0b\u5e38\u898b\u932f\u8aa4\uff1a<\/p>\n<p>1. **TypeError\uff1a** \u82e5\u50b3\u5165\u7684\u53c3\u6578\u4e0d\u662f\u985e\u5225\uff0c\u5247\u6703\u5f15\u767c TypeError\u3002\u4f8b\u5982\uff1a<\/p>\n<pre class=\"brush: python\">\n   print(issubclass(1, A))  # \u9019\u6703\u5f15\u767c TypeError\n   <\/pre>\n<p>   \u78ba\u4fdd `sub` \u548c `sup` \u53c3\u6578\u90fd\u662f\u985e\u5225\u6216\u5176\u5b50\u985e\u5225\u3002<\/p>\n<p>2. **\u5efa\u8b70\u4f7f\u7528** `isinstance()` \u51fd\u6578\u6aa2\u67e5\u7269\u4ef6\u662f\u5426\u70ba\u985e\u5225\u7684\u5be6\u4f8b\uff1a<\/p>\n<pre class=\"brush: python\">\n   obj = B()\n   print(isinstance(obj, A))  # \u8f38\u51fa: True\n   <\/pre>\n<h2>\u5ef6\u4f38\u61c9\u7528<\/h2>\n<p>`issubclass()` \u51fd\u6578\u5728\u8a31\u591a\u5834\u666f\u4e2d\u90fd\u975e\u5e38\u5be6\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<p>&#8211; **\u5efa\u7acb\u6846\u67b6\u6216\u5eab\u6642\uff1a** \u7576\u4f60\u8a2d\u8a08\u4e00\u500b\u652f\u6301\u64f4\u5c55\u7684\u6846\u67b6\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 `issubclass()` \u78ba\u4fdd\u7528\u6236\u7684\u985e\u5225\u7b26\u5408\u4f60\u7684\u8a2d\u8a08\u8981\u6c42\u3002<br \/>\n&#8211; **\u9032\u884c\u985e\u5225\u6aa2\u67e5\uff1a** \u5728\u5927\u578b\u61c9\u7528\u7a0b\u5f0f\u4e2d\uff0c\u4f7f\u7528 `issubclass()` \u53ef\u4ee5\u5e6b\u52a9\u9032\u884c\u66f4\u56b4\u8b39\u7684\u985e\u5225\u9a57\u8b49\uff0c\u78ba\u4fdd\u7a0b\u5f0f\u7684\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u679c\u4f60\u60f3\u8981\u66f4\u6df1\u5165\u5730\u4e86\u89e3 `issubclass()` \u51fd\u6578\uff0c\u53ef\u4ee5\u53c3\u8003 [Python \u5b98\u65b9\u6587\u4ef6](https:\/\/docs.python.org\/3\/library\/functions.html#issubclass)\uff0c\u6216\u8005\u53c3\u8003\u4e00\u4e9b\u7db2\u8def\u4e0a\u7684\u6559\u5b78\u6587\u7ae0\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>Python \u4e2d\u7684 `issubclass()` \u51fd\u6578\u662f\u6aa2\u67e5\u985e\u5225\u7e7c\u627f\u95dc\u4fc2\u7684\u91cd\u8981\u5de5\u5177\uff0c\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u5728\u7269\u4ef6\u5c0e\u5411\u7a0b\u5f0f\u8a2d\u8a08\u4e2d\u66f4\u597d\u5730\u7ba1\u7406\u548c\u9a57\u8b49\u985e\u5225\u7d50\u69cb\u3002<\/p>\n<h2>Q&#038;A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n<p>**Q1: `issubclass()` \u548c `isinstance()` \u6709\u4ec0\u9ebc\u5340\u5225\uff1f**<br \/>\nA1: `issubclass()` \u7528\u65bc\u6aa2\u67e5\u985e\u5225\u4e4b\u9593\u7684\u7e7c\u627f\u95dc\u4fc2\uff0c\u800c `isinstance()` \u7528\u65bc\u6aa2\u67e5\u7269\u4ef6\u662f\u5426\u70ba\u67d0\u500b\u985e\u5225\u7684\u5be6\u4f8b\u3002<\/p>\n<p>**Q2: \u6211\u5982\u4f55\u5728 Python \u4e2d\u5275\u5efa\u591a\u91cd\u7e7c\u627f\uff1f**<br \/>\nA2: \u4f60\u53ef\u4ee5\u5728\u985e\u5225\u5b9a\u7fa9\u4e2d\u6307\u5b9a\u591a\u500b\u7236\u985e\u5225\uff0c\u4f8b\u5982\uff1a`class C(A, B):`\uff0c\u7136\u5f8c\u4f60\u53ef\u4ee5\u4f7f\u7528 `issubclass()` \u4f86\u6aa2\u67e5\u985e\u5225\u4e4b\u9593\u7684\u95dc\u4fc2\u3002<\/p>\n<p>**Q3: \u5982\u679c\u6211\u60f3\u8981\u5b78\u7fd2\u66f4\u591a Python \u7684\u5167\u5bb9\uff0c\u8a72\u53bb\u54ea\u88e1\uff1f**<br \/>\nA3: \u4f60\u53ef\u4ee5\u53c3\u8003 [vocus.cc](https:\/\/vocus.cc) \u6216 [miner.tw](https:\/\/miner.tw) \u4e0a\u7684 Python \u6559\u5b78\u6587\u7ae0\uff0c\u9019\u4e9b\u8cc7\u6e90\u5c07\u5e6b\u52a9\u4f60\u6df1\u5165\u4e86\u89e3 Python \u7684\u5404\u7a2e\u529f\u80fd\u548c\u61c9\u7528\u3002<\/p>\n<p>&#8212;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Python\u4e2d\u7684issubclass()\u51fd\u6578\u53ef\u4ee5\u7528\u65bc\u6aa2\u67e5\u985e\u662f\u5426\u70ba\u7279\u5b9a\u985e\u7684\u5b50\u985e\uff0c\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528issubclass()\u51fd\u6578\uff0c\u4ee5\u53ca\u5b83\u7684\u512a\u9ede\u548c\u7f3a\u9ede\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-2940","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-Lq","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2940","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=2940"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2940\/revisions"}],"predecessor-version":[{"id":13005,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2940\/revisions\/13005"}],"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=2940"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2940"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2940"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}