{"id":3490,"date":"2025-05-30T15:14:12","date_gmt":"2025-06-04T07:33:12","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=3490"},"modified":"2025-06-04T15:14:12","modified_gmt":"2025-06-04T07:33:12","slug":"%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84methodresolutionorder%e5%87%bd%e6%95%b8%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/python\/%e4%ba%86%e8%a7%a3python%e4%b8%ad%e7%9a%84methodresolutionorder%e5%87%bd%e6%95%b8%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u6df1\u5165\u4e86\u89e3Python\u4e2d\u7684Method Resolution Order\uff08MRO\uff09\u53ca\u5176\u6700\u4f73\u5be6\u8e10"},"content":{"rendered":"

<\/p>\n

\u4ec0\u9ebc\u662fPython\u7684Method Resolution Order\uff08MRO\uff09\uff1f<\/h1>\n

Python\u7684Method Resolution Order\uff08MRO\uff09\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u641c\u5c0b\u9806\u5e8f\uff0c\u7528\u65bc\u78ba\u5b9a\u7279\u5b9a\u985e\u5225\u7684\u5c6c\u6027\u89e3\u6790\u9806\u5e8f\u3002MRO\u7684\u76ee\u7684\u5728\u65bc\u78ba\u4fdd\u5728\u591a\u91cd\u7e7c\u627f\u7684\u60c5\u6cc1\u4e0b\uff0c\u5b50\u985e\u5225\u80fd\u5920\u6b63\u78ba\u5730\u7372\u53d6\u7236\u985e\u5225\u7684\u5c6c\u6027\u3002\u9019\u5c0d\u65bc\u7406\u89e3\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u591a\u91cd\u7e7c\u627f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n

Python\u7684Method Resolution Order\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n

MRO\u7684\u5de5\u4f5c\u539f\u7406\u662f\u5f9e\u4e00\u500b\u985e\u5225\u958b\u59cb\uff0c\u7136\u5f8c\u6839\u64da\u7e7c\u627f\u7684\u9806\u5e8f\u641c\u5c0b\u985e\u5225\u7684\u5c6c\u6027\u3002MRO\u6703\u512a\u5148\u641c\u5c0b\u5b50\u985e\u5225\u7684\u5c6c\u6027\uff0c\u800c\u4e0d\u662f\u7236\u985e\u5225\u7684\u5c6c\u6027\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u985e\u5225A\u7e7c\u627f\u81ea\u985e\u5225B\uff0c\u90a3\u9ebcMRO\u5c07\u6703\u9996\u5148\u641c\u5c0b\u985e\u5225A\u7684\u5c6c\u6027\uff0c\u7136\u5f8c\u518d\u641c\u5c0b\u985e\u5225B\u7684\u5c6c\u6027\u3002<\/p>\n

\u5728Python\u4e2d\uff0cMRO\u9075\u5faaC3\u7dda\u6027\u5316\u7b97\u6cd5\uff0c\u9019\u78ba\u4fdd\u4e86\u591a\u91cd\u7e7c\u627f\u4e2d\u5c6c\u6027\u89e3\u6790\u7684\u6b63\u78ba\u6027\u3002\u9019\u610f\u5473\u8457\u5728\u591a\u91cd\u7e7c\u627f\u7684\u60c5\u6cc1\u4e0b\uff0cPython\u6703\u6309\u7167\u4e00\u500b\u7279\u5b9a\u7684\u9806\u5e8f\u4f86\u89e3\u6790\u985e\u5225\u7684\u5c6c\u6027\uff0c\u9019\u6709\u52a9\u65bc\u907f\u514d\u6f5b\u5728\u7684\u885d\u7a81\u3002<\/p>\n

Python\u7684Method Resolution Order\u7684\u7a0b\u5f0f\u78bc\u7bc4\u4f8b<\/h2>\n

\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684Python\u7a0b\u5f0f\u78bc\u7bc4\u4f8b\uff0c\u5c55\u793a\u4e86MRO\u7684\u5de5\u4f5c\u539f\u7406\uff1a<\/p>\n

“`python
\nclass A:
\n def do_something(self):
\n print(“Doing something in A”)<\/p>\n

class B(A):
\n def do_something(self):
\n print(“Doing something in B”)<\/p>\n

class C(A):
\n def do_something(self):
\n print(“Doing something in C”)<\/p>\n

class D(B, C):
\n pass<\/p>\n

d = D()
\nd.do_something() # \u8f38\u51fa: Doing something in B
\n“`<\/p>\n

\u5728\u4e0a\u9762\u7684\u7a0b\u5f0f\u78bc\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u56db\u500b\u985e\u5225\uff1aA\u3001B\u3001C\u548cD\u3002\u985e\u5225D\u7e7c\u627f\u81ea\u985e\u5225B\u548cC\uff0c\u800c\u985e\u5225B\u548cC\u53c8\u5404\u81ea\u7e7c\u627f\u81ea\u985e\u5225A\u3002\u7576\u6211\u5011\u5efa\u7acb\u4e00\u500bD\u985e\u5225\u7684\u5c0d\u8c61\u6642\uff0cMRO\u5c07\u6703\u512a\u5148\u641c\u5c0b\u985e\u5225B\u7684\u5c6c\u6027\uff0c\u7136\u5f8c\u518d\u641c\u5c0b\u985e\u5225C\u7684\u5c6c\u6027\uff0c\u6700\u5f8c\u518d\u641c\u5c0b\u985e\u5225A\u7684\u5c6c\u6027\u3002\u56e0\u6b64\uff0c\u7576\u6211\u5011\u8abf\u7528`d.do_something()`\u6642\uff0c\u5c07\u6703\u57f7\u884c\u985e\u5225B\u4e2d\u5b9a\u7fa9\u7684`do_something()`\u65b9\u6cd5\u3002<\/p>\n

\u932f\u8aa4\u6392\u9664\u8207\u5e38\u898b\u554f\u984c<\/h2>\n

\u5728\u4f7f\u7528MRO\u7684\u904e\u7a0b\u4e2d\uff0c\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u7684\u554f\u984c\uff0c\u4f8b\u5982\u5c6c\u6027\u89e3\u6790\u4e0d\u5982\u9810\u671f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u932f\u8aa4\u6392\u9664\u7684\u5efa\u8b70\uff1a<\/p>\n

1. **\u6aa2\u67e5\u7e7c\u627f\u9806\u5e8f**\uff1a\u78ba\u4fdd\u985e\u5225\u7684\u7e7c\u627f\u9806\u5e8f\u6b63\u78ba\uff0c\u56e0\u70ba\u9019\u5c07\u76f4\u63a5\u5f71\u97ffMRO\u7684\u7d50\u679c\u3002
\n2. **\u4f7f\u7528`super()`**\uff1a\u5728\u591a\u91cd\u7e7c\u627f\u4e2d\uff0c\u4f7f\u7528`super()`\u51fd\u6578\u53ef\u4ee5\u66f4\u6e05\u6670\u5730\u6307\u5b9a\u8981\u8abf\u7528\u7684\u7236\u985e\u5225\u65b9\u6cd5\u3002
\n3. **\u67e5\u770bMRO\u7d50\u679c**\uff1a\u60a8\u53ef\u4ee5\u4f7f\u7528`ClassName.__mro__`\u4f86\u7372\u53d6\u985e\u5225\u7684MRO\u5217\u8868\uff0c\u4f8b\u5982`D.__mro__`\u5c07\u8fd4\u56de\u985e\u5225D\u7684MRO\u3002<\/p>\n

\u5ef6\u4f38\u61c9\u7528<\/h2>\n

MRO\u4e0d\u50c5\u5728\u591a\u91cd\u7e7c\u627f\u4e2d\u6709\u91cd\u8981\u61c9\u7528\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u8a2d\u8a08\u6a21\u5f0f\u4e2d\uff0c\u4f8b\u5982\u7b56\u7565\u6a21\u5f0f\u548c\u89c0\u5bdf\u8005\u6a21\u5f0f\u3002\u4e86\u89e3MRO\u7684\u5de5\u4f5c\u539f\u7406\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u8a2d\u8a08\u53ef\u64f4\u5c55\u548c\u53ef\u7dad\u8b77\u7684\u7a0b\u5f0f\u78bc\u7d50\u69cb\u3002<\/p>\n

\u6b64\u5916\uff0c\u60a8\u53ef\u4ee5\u53c3\u8003\u66f4\u591a\u95dc\u65bcPython\u591a\u91cd\u7e7c\u627f\u7684\u6559\u5b78\u6587\u7ae0\uff0c\u4f8b\u5982 [\u9019\u7bc7\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc\/article\/6050ca81fd89780006e5e0b1) \u4f86\u6df1\u5165\u4e86\u89e3\u8a72\u4e3b\u984c\u3002<\/p>\n

\u7e3d\u7d50<\/h2>\n

Python\u7684Method Resolution Order\uff08MRO\uff09\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u641c\u5c0b\u9806\u5e8f\uff0c\u65e8\u5728\u78ba\u4fdd\u5728\u591a\u91cd\u7e7c\u627f\u7684\u60c5\u6cc1\u4e0b\uff0c\u5b50\u985e\u5225\u80fd\u5920\u6b63\u78ba\u5730\u7372\u53d6\u7236\u985e\u5225\u7684\u5c6c\u6027\u3002\u901a\u904e\u7406\u89e3MRO\u7684\u539f\u7406\u548c\u61c9\u7528\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u8a2d\u8a08\u985e\u5225\u6642\u505a\u51fa\u66f4\u597d\u7684\u9078\u64c7\uff0c\u907f\u514d\u5c6c\u6027\u89e3\u6790\u7684\u885d\u7a81\u3002<\/p>\n

Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n

**Q1: MRO\u662f\u5982\u4f55\u8a08\u7b97\u7684\uff1f**
\nA1: MRO\u662f\u57fa\u65bcC3\u7dda\u6027\u5316\u7b97\u6cd5\u8a08\u7b97\u7684\uff0c\u9019\u78ba\u4fdd\u4e86\u591a\u91cd\u7e7c\u627f\u4e2d\u5c6c\u6027\u89e3\u6790\u7684\u6b63\u78ba\u6027\u3002<\/p>\n

**Q2: \u5982\u4f55\u4f7f\u7528`super()`\u51fd\u6578\uff1f**
\nA2: `super()`\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u8abf\u7528\u7236\u985e\u5225\u7684\u65b9\u6cd5\uff0c\u4e26\u4e14\u5728\u591a\u91cd\u7e7c\u627f\u4e2d\u6703\u6839\u64daMRO\u81ea\u52d5\u9078\u64c7\u6b63\u78ba\u7684\u7236\u985e\u5225\u3002<\/p>\n

**Q3: \u662f\u5426\u53ef\u4ee5\u624b\u52d5\u4fee\u6539MRO\uff1f**
\nA3: \u4e0d\u5efa\u8b70\u624b\u52d5\u4fee\u6539MRO\uff0c\u56e0\u70ba\u9019\u6703\u5c0e\u81f4\u4e0d\u78ba\u5b9a\u7684\u884c\u70ba\uff0c\u61c9\u4f9d\u8cf4Python\u81ea\u52d5\u8a08\u7b97\u7684MRO\u3002<\/p>\n

—<\/p>\n","protected":false},"excerpt":{"rendered":"

MethodResolutionOrder()\u51fd\u6578\u662fPython\u4e2d\u7528\u4f86\u6c7a\u5b9a\u7269\u4ef6\u7e7c\u627f\u7684\u9806\u5e8f\uff0c\u5b83\u53ef\u4ee5\u8b93\u958b\u767c\u8005\u66f4\u6e05\u695a\u5730\u4e86\u89e3\u7269\u4ef6\u7e7c\u627f\u7684\u9806\u5e8f\uff0c\u4ee5\u53ca\u5982\u4f55\u66f4\u6709\u6548\u5730\u4f7f\u7528Python\u4e2d\u7684\u7269\u4ef6\u7e7c\u627f\u529f\u80fd\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-3490","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-Ui","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3490","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=3490"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3490\/revisions"}],"predecessor-version":[{"id":12816,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/3490\/revisions\/12816"}],"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=3490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=3490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=3490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}