{"id":204114,"date":"2025-05-29T13:24:48","date_gmt":"2025-05-29T05:24:48","guid":{"rendered":"https:\/\/server.hk\/cnblog\/204114\/"},"modified":"2025-05-29T13:24:48","modified_gmt":"2025-05-29T05:24:48","slug":"python-%e4%b8%ad%e5%8a%a0%e5%bc%95%e5%8f%b7%e7%9a%84%e7%b1%bb%e5%9e%8b%e6%8f%90%e7%a4%ba%ef%bc%9atypemodel-%e7%9a%84%e5%8e%9f%e7%90%86%e5%92%8c%e4%bd%9c%e7%94%a8%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/204114\/","title":{"rendered":"Python \u4e2d\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u63d0\u793a\uff1aType[\\’Model\\’] \u7684\u539f\u7406\u548c\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

Python \u4e2d\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u63d0\u793a\uff1aType[\\’Model\\’] \u7684\u539f\u7406\u548c\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/h1>\n

IT\u884c\u4e1a\u76f8\u5bf9\u4e8e\u4e00\u822c\u4f20\u7edf\u884c\u4e1a\uff0c\u53d1\u5c55\u66f4\u65b0\u901f\u5ea6\u66f4\u5feb\uff0c\u4e00\u65e6\u505c\u6b62\u4e86\u5b66\u4e60\uff0c\u5f88\u5feb\u5c31\u4f1a\u88ab\u884c\u4e1a\u6240\u6dd8\u6c70\u3002\u6240\u4ee5\u6211\u4eec\u9700\u8981\u8e0f\u8e0f\u5b9e\u5b9e\u7684\u4e0d\u65ad\u5b66\u4e60\uff0c\u7cbe\u8fdb\u81ea\u5df1\u7684\u6280\u672f\uff0c\u5c24\u5176\u662f\u521d\u5b66\u8005\u3002\u4eca\u5929\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aPython \u4e2d\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u63d0\u793a\uff1aType[\\’Model\\’] \u7684\u539f\u7406\u548c\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

<\/p>\n

python \u4e2d\u52a0\u5f15\u53f7\u7684 typing hint<\/strong><\/p>\n

pydantic \u4e2d\u51fa\u73b0\u7684 Type[‘Model’] \u8fd9\u79cd\u52a0\u4e86\u5f15\u53f7\u7684\u7c7b\u578b\u63d0\u793a\uff0c\u5f15\u8d77\u4e86\u7591\u60d1\u3002\u8fd9\u79cd\u5199\u6cd5\u7684\u539f\u7406\u662f\u4ec0\u4e48\uff1f\u4e3a\u4ec0\u4e48\u9700\u8981\u52a0\u5f15\u53f7\uff1f<\/p>\n

\u5f15\u53f7\u5185\u7684\u7c7b\u578b\u6807\u6ce8\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8bed\u6cd5\uff0c\u7528\u4e8e\u89e3\u51b3\u5728\u7c7b\u578b\u5c1a\u672a\u5b9a\u4e49\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u7c7b\u578b\u63d0\u793a\u7684\u95ee\u9898\u3002\u5f53\u67d0\u4e2a\u7c7b\u578b\u9700\u8981\u5728\u5b83\u5b9a\u4e49\u5b8c\u6210\u4e4b\u524d\u5bf9\u5176\u8fdb\u884c\u5f15\u7528\u65f6\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u5f15\u53f7\u62ec\u8d77\u6765\u8868\u793a\u8be5\u7c7b\u578b\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\u3002<\/p>\n

\u6839\u636e PEP 484\uff08\u4eca\u5df2\u5e9f\u5f03\uff09\uff0c\u8fd9\u79cd\u5f15\u53f7\u6807\u6ce8\u88ab\u5f15\u5165\uff0c\u7528\u4e8e\u5b9e\u73b0\u5bf9\u5c1a\u672a\u5b9a\u4e49\u7c7b\u578b\u7684\u5411\u524d\u5f15\u7528\u3002\u5728\u4f7f\u7528 from __future__ import annotations \u540e\uff0c\u53ef\u4ee5\u63d0\u524d\u542f\u7528 PEP 563 \u4e2d\u7684\u65b0\u6ce8\u89e3\u8bed\u6cd5\u3002<\/p>\n

\u5728 PEP 563 \u4e2d\uff0c\u7c7b\u578b\u63d0\u793a\u88ab\u7edf\u4e00\u4e3a\u5b57\u7b26\u4e32\u683c\u5f0f\uff0c\u65e0\u8bba\u662f\u5426\u52a0\u5f15\u53f7\u3002\u52a0\u5f15\u53f7\u7684\u5199\u6cd5\u662f\u4e3a\u4e86\u517c\u5bb9\u4f4e\u7248\u672c\u7684 Python\uff0c\u5982 Python 3.6\u3002\u5b83\u5141\u8bb8\u5728\u7c7b\u578b\u5c1a\u672a\u5b9a\u4e49\u65f6\u8fdb\u884c\u6ce8\u91ca\uff0c\u4e4b\u540e\u5728\u9700\u8981\u65f6\u518d\u8ba1\u7b97\u5b9e\u9645\u7684\u7c7b\u578b\u3002<\/p>\n

\u5728\u4e3e\u4f8b\u4e2d\u7684 Type[‘Model’] \u4e2d\uff0c’Model’ \u5b57\u7b26\u4e32\u662f\u4e00\u4e2a\u7c7b\u578b\u63d0\u793a\uff0c\u5b83\u5c06\u5728 Model \u7c7b\u5b9a\u4e49\u5b8c\u6210\u540e\u89e3\u6790\u4e3a Model \u7c7b\u672c\u8eab\u3002\u8fd9\u79cd\u8bed\u6cd5\u53ef\u4ee5\u786e\u4fdd\u5728\u7c7b\u5b9a\u4e49\u4e4b\u524d\u5f15\u7528\u5176\u7c7b\u578b\u3002<\/p>\n

\u4f7f\u7528\u5f15\u53f7\u6807\u6ce8\u63d0\u4f9b\u4e86\u4e00\u79cd\u7075\u6d3b\u7684\u65b9\u5f0f\u5728\u7c7b\u578b\u5c1a\u672a\u5b9a\u4e49\u65f6\u5bf9\u5b83\u4eec\u8fdb\u884c\u5f15\u7528\uff0c\u540c\u65f6\u4e5f\u786e\u4fdd\u4e86\u5411\u524d\u517c\u5bb9\u6027\u548c\u4ee3\u7801\u667a\u80fd\u63d0\u793a\u7684\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n

\u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300aPython \u4e2d\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u63d0\u793a\uff1aType[\\’Model\\’] \u7684\u539f\u7406\u548c\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

Python \u4e2d\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u63d0\u793a...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-204114","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=204114"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/204114\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=204114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=204114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=204114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}