{"id":49772,"date":"2024-12-03T16:41:42","date_gmt":"2024-12-03T08:41:42","guid":{"rendered":"https:\/\/fwq.ai\/blog\/49772\/"},"modified":"2024-12-03T16:41:42","modified_gmt":"2024-12-03T08:41:42","slug":"python-%e7%b1%bb%e5%9e%8b%e6%a0%87%e6%b3%a8%e4%b8%ad%e7%9a%84%e5%bc%95%e5%8f%b7%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e8%a6%81%e4%bd%bf%e7%94%a8-typemodel%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/49772\/","title":{"rendered":"Python \u7c7b\u578b\u6807\u6ce8\u4e2d\u7684\u5f15\u53f7\uff1a\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 `Type[\\’Model\\’]`\uff1f"},"content":{"rendered":"

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

Python \u7c7b\u578b\u6807\u6ce8\u4e2d\u7684\u5f15\u53f7\uff1a\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 `Type[\\’Model\\’]`\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\u7c73\u4e91\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aPython \u7c7b\u578b\u6807\u6ce8\u4e2d\u7684\u5f15\u53f7\uff1a\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 `Type[\\’Model\\’]`\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\"Python<\/p>\n

Python \u52a0\u5f15\u53f7\u7684 Typing Hint \u89e3\u60d1<\/strong><\/p>\n

\u5728 Python \u7c7b\u578b\u6807\u6ce8\u4e2d\uff0c\u6709\u65f6\u4f1a\u770b\u5230\u7531\u5f15\u53f7\u62ec\u8d77\u6765\u7684\u7c7b\u578b\uff0c\u4f8b\u5982 Type[‘Model’]\u3002\u8fd9\u5e76\u975e\u5c06 Model \u7c7b\u578b\u7684\u6807\u8bc6\u7b26\u66f4\u6539\u4e3a\u5b57\u7b26\u4e32\uff0c\u53cd\u800c\u662f\u4e00\u4e2a\u5fae\u5999\u7684\u8bed\u6cd5\u7279\u6027\u3002<\/p>\n

\u5ef6\u8fdf\u6c42\u503c\u7c7b\u578b\u6807\u6ce8<\/strong><\/p>\n

\u67d0\u4e9b\u7c7b\u578b\u7684\u6807\u6ce8\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u624d\u88ab\u5b8c\u5168\u5b9a\u4e49\u3002\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u5728\u65b9\u6cd5\u7684\u53c2\u6570\u4e2d\u4f7f\u7528\u672a\u5b9a\u4e49\u7684\u6807\u8bc6\u7b26\u4f5c\u4e3a\u7c7b\u578b\u6807\u6ce8\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u6765\u4ee3\u8868\u8fd9\u4e9b\u7c7b\u578b\u3002<\/p>\n

Model \u7c7b\u578b\u53ea\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002\u5728\u7c7b\u5b9a\u4e49\u5b8c\u6210\u4e4b\u524d\uff0c\u65e0\u6cd5\u76f4\u63a5\u4f7f\u7528 Model \u4f5c\u4e3a\u65b9\u6cd5\u7684\u7c7b\u578b\u6807\u6ce8\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5b57\u7b26\u4e32 “Model” \u6765\u8868\u793a\u8fd9\u4e2a\u7c7b\u578b\u3002<\/p>\n

\u52a8\u6001\u6c42\u503c\u80cc\u540e\u7684\u673a\u5236<\/strong><\/p>\n

PEP 563 \u5f15\u5165\u4e86\u52a8\u6001\u6c42\u503c\u7c7b\u578b\u6807\u6ce8\u7684\u673a\u5236\u3002\u8fd9\u5141\u8bb8\u65e0\u8bba\u7c7b\u578b\u6807\u6ce8\u7684\u521d\u59cb\u5f62\u5f0f\u5982\u4f55\uff0c\u5728\u5b9e\u9645\u4f7f\u7528\u65f6\u90fd\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002\u4e4b\u540e\uff0cPython \u4f1a\u5728\u8fd0\u884c\u65f6\u89e3\u6790\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u7c7b\u578b\u6807\u6ce8\u66ff\u6362\u4e3a\u5b9e\u9645\u7c7b\u578b\u3002<\/p>\n

\u9632\u6b62\u540d\u79f0\u51b2\u7a81<\/strong><\/p>\n

\u5728\u65e9\u671f\u7248\u672c\u7684 Python \u4e2d\uff08\u4f8b\u5982 Python 3.6\uff09\uff0c\u4f7f\u7528\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u6807\u6ce8\u53ef\u4ee5\u9632\u6b62\u540d\u79f0\u51b2\u7a81\u3002\u5047\u8bbe\u5b58\u5728\u4e00\u4e2a\u51fd\u6570 model()\uff0c\u5982\u679c\u5c06 Model \u76f4\u63a5\u4f5c\u4e3a\u53c2\u6570\u7c7b\u578b\u6807\u6ce8\uff0c\u5219\u53ef\u80fd\u4f1a\u4e0e model() \u51fd\u6570\u6df7\u6dc6\u3002\u901a\u8fc7\u4f7f\u7528 ‘Model’\uff0c\u53ef\u4ee5\u660e\u786e\u6307\u5b9a\u8fd9\u662f\u4e00\u4e2a\u7c7b\u578b\u6807\u6ce8\uff0c\u907f\u514d\u540d\u79f0\u51b2\u7a81\u3002<\/p>\n

\u672a\u6765\u5c55\u671b<\/strong><\/p>\n

\u901a\u8fc7 from __future__ import annotations\uff0cPython \u5141\u8bb8\u63d0\u524d\u542f\u7528 PEP 563 \u7684\u52a8\u6001\u6c42\u503c\u7279\u6027\u3002\u8fd9\u4f7f\u5f97\u53ef\u4ee5\u5728\u672a\u5b9a\u4e49\u7c7b\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u5176\u7c7b\u578b\u6807\u6ce8\uff0c\u7b80\u5316\u4e86\u4ee3\u7801\u7684\u7f16\u5199\u3002<\/p>\n

\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aPython \u7c7b\u578b\u6807\u6ce8\u4e2d\u7684\u5f15\u53f7\uff1a\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 `Type[\\’Model\\’]`\uff1f\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

Python \u7c7b\u578b\u6807\u6ce8\u4e2d\u7684\u5f15\u53f7\uff1a\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 `Type[\\’Model\\’]`\uff1f 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\u7c73\u4e91\u7ed9\u5927\u5bb6\u6574\u7406\u4e86\u300aPython \u7c7b\u578b\u6807\u6ce8\u4e2d\u7684\u5f15\u53f7\uff1a\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528 `Type[\\’Model\\’]`\uff1f\u300b\uff0c\u804a\u804a\uff0c\u6211\u4eec\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01 Python \u52a0\u5f15\u53f7\u7684 Typing Hint \u89e3\u60d1 \u5728 Python \u7c7b\u578b\u6807\u6ce8\u4e2d\uff0c\u6709\u65f6\u4f1a\u770b\u5230\u7531\u5f15\u53f7\u62ec\u8d77\u6765\u7684\u7c7b\u578b\uff0c\u4f8b\u5982 Type[‘Model’]\u3002\u8fd9\u5e76\u975e\u5c06 Model \u7c7b\u578b\u7684\u6807\u8bc6\u7b26\u66f4\u6539\u4e3a\u5b57\u7b26\u4e32\uff0c\u53cd\u800c\u662f\u4e00\u4e2a\u5fae\u5999\u7684\u8bed\u6cd5\u7279\u6027\u3002 \u5ef6\u8fdf\u6c42\u503c\u7c7b\u578b\u6807\u6ce8 \u67d0\u4e9b\u7c7b\u578b\u7684\u6807\u6ce8\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\u624d\u88ab\u5b8c\u5168\u5b9a\u4e49\u3002\u5728 Python \u4e2d\uff0c\u53ef\u4ee5\u5728\u65b9\u6cd5\u7684\u53c2\u6570\u4e2d\u4f7f\u7528\u672a\u5b9a\u4e49\u7684\u6807\u8bc6\u7b26\u4f5c\u4e3a\u7c7b\u578b\u6807\u6ce8\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u6765\u4ee3\u8868\u8fd9\u4e9b\u7c7b\u578b\u3002 Model \u7c7b\u578b\u53ea\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002\u5728\u7c7b\u5b9a\u4e49\u5b8c\u6210\u4e4b\u524d\uff0c\u65e0\u6cd5\u76f4\u63a5\u4f7f\u7528 Model \u4f5c\u4e3a\u65b9\u6cd5\u7684\u7c7b\u578b\u6807\u6ce8\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u5b57\u7b26\u4e32 “Model” \u6765\u8868\u793a\u8fd9\u4e2a\u7c7b\u578b\u3002 \u52a8\u6001\u6c42\u503c\u80cc\u540e\u7684\u673a\u5236 PEP 563 \u5f15\u5165\u4e86\u52a8\u6001\u6c42\u503c\u7c7b\u578b\u6807\u6ce8\u7684\u673a\u5236\u3002\u8fd9\u5141\u8bb8\u65e0\u8bba\u7c7b\u578b\u6807\u6ce8\u7684\u521d\u59cb\u5f62\u5f0f\u5982\u4f55\uff0c\u5728\u5b9e\u9645\u4f7f\u7528\u65f6\u90fd\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u3002\u4e4b\u540e\uff0cPython \u4f1a\u5728\u8fd0\u884c\u65f6\u89e3\u6790\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u7c7b\u578b\u6807\u6ce8\u66ff\u6362\u4e3a\u5b9e\u9645\u7c7b\u578b\u3002 \u9632\u6b62\u540d\u79f0\u51b2\u7a81 \u5728\u65e9\u671f\u7248\u672c\u7684 Python \u4e2d\uff08\u4f8b\u5982 Python 3.6\uff09\uff0c\u4f7f\u7528\u52a0\u5f15\u53f7\u7684\u7c7b\u578b\u6807\u6ce8\u53ef\u4ee5\u9632\u6b62\u540d\u79f0\u51b2\u7a81\u3002\u5047\u8bbe\u5b58\u5728\u4e00\u4e2a\u51fd\u6570 model()\uff0c\u5982\u679c\u5c06 Model \u76f4\u63a5\u4f5c\u4e3a\u53c2\u6570\u7c7b\u578b\u6807\u6ce8\uff0c\u5219\u53ef\u80fd\u4f1a\u4e0e model() \u51fd\u6570\u6df7\u6dc6\u3002\u901a\u8fc7\u4f7f\u7528 ‘Model’\uff0c\u53ef\u4ee5\u660e\u786e\u6307\u5b9a\u8fd9\u662f\u4e00\u4e2a\u7c7b\u578b\u6807\u6ce8\uff0c\u907f\u514d\u540d\u79f0\u51b2\u7a81\u3002 \u672a\u6765\u5c55\u671b \u901a\u8fc7 from __future__ import annotations\uff0cPython \u5141\u8bb8\u63d0\u524d\u542f\u7528 PEP 563 \u7684\u52a8\u6001\u6c42\u503c\u7279\u6027\u3002\u8fd9\u4f7f\u5f97\u53ef\u4ee5\u5728\u672a\u5b9a\u4e49\u7c7b\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u5176\u7c7b\u578b\u6807\u6ce8\uff0c\u7b80\u5316\u4e86\u4ee3\u7801\u7684\u7f16\u5199\u3002 \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aPython […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-49772","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/49772","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=49772"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/49772\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=49772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=49772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=49772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}