{"id":60993,"date":"2026-01-16T20:41:42","date_gmt":"2026-01-16T12:41:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/60993.html"},"modified":"2026-01-16T20:41:42","modified_gmt":"2026-01-16T12:41:42","slug":"%e6%9e%84%e5%bb%ba%e8%87%aa%e5%b7%b1%e7%9a%84ai%e7%bc%96%e7%a8%8b%e5%8a%a9%e6%89%8b%ef%bc%9a%e5%9f%ba%e4%ba%8erag%e7%9a%84%e4%b8%8a%e4%b8%8b%e6%96%87%e6%84%9f%e7%9f%a5%e5%ae%9e%e7%8e%b0%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/60993.html","title":{"rendered":"\u6784\u5efa\u81ea\u5df1\u7684AI\u7f16\u7a0b\u52a9\u624b\uff1a\u57fa\u4e8eRAG\u7684\u4e0a\u4e0b\u6587\u611f\u77e5\u5b9e\u73b0\u65b9\u6848"},"content":{"rendered":"<p>\u5f88\u591a\u4eba\u89c9\u5f97\u505a\u4e2aAI\u52a9\u624b\u5c31\u662f\u8c03\u8c03OpenAI\u7684\u63a5\u53e3&#xff0c;\u5176\u5b9e\u8fd9\u6837\u667a\u80fd\u505a\u51fa\u4e00\u4e2a\u901a\u7528\u804a\u5929\u673a\u5668\u4eba\u3002<\/p>\n<p>\u800c\u4ee3\u7801\u52a9\u624b\u9700\u8981\u4e13\u95e8\u4e3a\u4ee3\u7801\u8bbe\u8ba1\u7684\u4e0a\u4e0b\u6587\u611f\u77e5\u7684RAG&#xff08;Retrieval-Augmented Generation&#xff09;\u7ba1\u9053&#xff0c;\u8fd9\u662f\u56e0\u4e3a\u4ee3\u7801\u8ddf\u666e\u901a\u6587\u672c\u4e0d\u4e00\u6837&#xff0c;\u7ed3\u6784\u4e25\u683c&#xff0c;\u800c\u4e14\u4e0d\u80fd\u968f\u4fbf\u6309\u5b57\u7b26\u968f\u4fbf\u8fdb\u884c\u5206\u5272\u3002<\/p>\n<p>\u4e00\u822c\u7684\u4ee3\u7801\u52a9\u624b\u5206\u56db\u5757&#xff1a;\u4ee3\u7801\u89e3\u6790\u628a\u6e90\u6587\u4ef6\u8f6c\u6210AST\u8bed\u6cd5\u6811&#xff1b;\u5411\u91cf\u5b58\u50a8\u6309\u8bed\u4e49\u7d22\u5f15\u4ee3\u7801\u7247\u6bb5\u800c\u975e\u5173\u952e\u8bcd\u5339\u914d&#xff1b;\u4ed3\u5e93\u5730\u56fe\u7ed9LLM\u4e00\u4e2a\u5168\u5c40\u89c6\u89d2&#xff0c;\u77e5\u9053\u6587\u4ef6\u7ed3\u6784\u548c\u7c7b\u5b9a\u4e49\u5728\u54ea&#xff1b;\u63a8\u7406\u5c42\u628a\u7528\u6237\u95ee\u9898\u3001\u76f8\u5173\u4ee3\u7801\u3001\u4ed3\u5e93\u7ed3\u6784\u62fc\u6210\u4e00\u4e2a\u5b8c\u6574\u7684prompt\u53d1\u7ed9\u6a21\u578b\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260116124140-696a3204a91fa.jpg\" alt=\"\" \/><\/p>\n<h3>\u4ee3\u7801\u89e3\u6790&#xff1a;\u522b\u7528\u6587\u672c\u5206\u5272\u5668<\/h3>\n<p>\u81ea\u5df1\u505a\u4ee3\u7801\u52a9\u624b\u6700\u5e38\u89c1\u7684\u5751\u662f\u76f4\u63a5\u7528\u6587\u672c\u5206\u5272\u5668\u3002<\/p>\n<p>\u6bd4\u5982\u63091000\u5b57\u7b26\u5207Python\u6587\u4ef6\u5f88\u53ef\u80fd\u628a\u51fd\u6570\u62e6\u8170\u622a\u65ad\u3002AI\u62ff\u5230\u540e\u534a\u622a\u6ca1\u6709\u51fd\u6570\u7b7e\u540d\u6839\u672c\u4e0d\u77e5\u9053\u53c2\u6570\u7b49\u5177\u4f53\u4fe1\u606f\u3002<\/p>\n<p>\u800c\u6b63\u786e\u505a\u6cd5\u662f\u57fa\u4e8eAST\u5206\u5757\u3002tree-sitter\u662f\u8fd9\u65b9\u9762\u7684\u6807\u51c6\u5de5\u5177&#xff0c;\u56e0\u4e3aAtom\u548cNeovim\u90fd\u5728\u7528\u3002\u5b83\u80fd\u6309\u903b\u8f91\u8fb9\u754c\u6bd4\u5982\u7c7b\u6216\u51fd\u6570\u6765\u5207\u5206\u4ee3\u7801\u3002<\/p>\n<p>\u4f9d\u8d56\u5e93\u662ftree_sitter\u548ctree_sitter_languages&#xff1a;<\/p>\n<p> from langchain.text_splitter import RecursiveCharacterTextSplitter, Language<br \/>\nfrom langchain_community.document_loaders.generic import GenericLoader<br \/>\nfrom langchain_community.document_loaders.parsers import LanguageParser  <\/p>\n<p># 1. Load the Repository<br \/>\n# We point the loader to our local repo. It automatically handles extensions.<br \/>\nloader &#061; GenericLoader.from_filesystem(<br \/>\n    &#034;.\/my_legacy_project&#034;,<br \/>\n    glob&#061;&#034;**\/*&#034;,<br \/>\n    suffixes&#061;[&#034;.py&#034;],<br \/>\n    parser&#061;LanguageParser(language&#061;Language.PYTHON, parser_threshold&#061;500)<br \/>\n)<br \/>\ndocuments &#061; loader.load()  <\/p>\n<p># 2. Split by AST (Abstract Syntax Tree)<br \/>\n# This ensures we don&#039;t break a class or function in the middle.<br \/>\npython_splitter &#061; RecursiveCharacterTextSplitter.from_language(<br \/>\n    language&#061;Language.PYTHON,<br \/>\n    chunk_size&#061;2000,<br \/>\n    chunk_overlap&#061;200<br \/>\n)  <\/p>\n<p>texts &#061; python_splitter.split_documents(documents)  <\/p>\n<p>print(f&#034;Processed {len(texts)} semantic code chunks.&#034;)<br \/>\n # Example output: Processed 452 semantic code chunks.<\/p>\n<p>\u4fdd\u6301\u51fd\u6570\u5b8c\u6574\u6027\u5f88\u5173\u952e\u3002\u68c0\u7d22\u5668\u62ff\u5230\u7684\u6bcf\u4e2a\u5206\u5757\u90fd\u662f\u5b8c\u6574\u7684\u903b\u8f91\u5355\u5143&#xff0c;\u4e0d\u662f\u4ee3\u7801\u788e\u7247\u3002<\/p>\n<h3>\u5411\u91cf\u5b58\u50a8\u65b9\u6848<\/h3>\n<p>\u5206\u5757\u5b8c\u6210\u540e\u9700\u8981\u5b58\u50a8&#xff0c;\u5411\u91cf\u6570\u636e\u5e93\u80af\u5b9a\u662f\u6807\u914d\u3002<\/p>\n<p>embedding\u6a21\u578b\u63a8\u8350\u53ef\u4ee5\u7528OpenAI\u7684text-embedding-3-large\u6216\u8005Voyage AI\u7684\u4ee3\u7801\u4e13\u7528\u6a21\u578b\u3002\u8fd9\u7c7b\u6a21\u578b\u5728\u4ee3\u7801\u8bed\u4e49\u7406\u89e3\u4e0a\u8868\u73b0\u66f4\u597d&#xff0c;\u80fd\u8bc6\u522b\u51fa<\/p>\n<p>def get_users():<\/p>\n<p>\u548c&#034;\u83b7\u53d6\u7528\u6237\u5217\u8868&#034;\u662f\u4e00\u56de\u4e8b\u3002<\/p>\n<p>\u8fd9\u91cc\u7528ChromaDB\u4f5c\u4e3a\u793a\u4f8b&#xff1a;<\/p>\n<p> from langchain_chroma import Chroma<br \/>\nfrom langchain_openai import OpenAIEmbeddings  <\/p>\n<p># Initialize the Vector DB<br \/>\n# Ideally, persist this to disk so you don&#039;t re-index every run<br \/>\ndb &#061; Chroma.from_documents(<br \/>\n    texts,<br \/>\n    OpenAIEmbeddings(model&#061;&#034;text-embedding-3-large&#034;),<br \/>\n    persist_directory&#061;&#034;.\/chroma_db&#034;<br \/>\n)  <\/p>\n<p>retriever &#061; db.as_retriever(<br \/>\n    search_type&#061;&#034;mmr&#034;, # Maximal Marginal Relevance for diversity<br \/>\n    search_kwargs&#061;{&#034;k&#034;: 8} # Fetch top 8 relevant snippets<br \/>\n )<\/p>\n<p>\u8fd9\u91cc\u6709\u4e2a\u9700\u8981\u8bf4\u660e\u7684\u7ec6\u8282&#xff1a;search_type\u7528&#034;mmr&#034;\u662f\u56e0\u4e3a\u666e\u901a\u76f8\u4f3c\u5ea6\u641c\u7d22\u5bb9\u6613\u8fd4\u56de\u4e94\u4e2a\u51e0\u4e4e\u4e00\u6837\u7684\u5206\u5757&#xff0c;MMR&#xff08;\u6700\u5927\u8fb9\u9645\u76f8\u5173\u6027&#xff09;\u4f1a\u5f3a\u5236\u9009\u53d6\u76f8\u5173\u4f46\u5f7c\u6b64\u4e0d\u540c\u7684\u7ed3\u679c&#xff0c;\u8fd9\u6837\u53ef\u4ee5\u7ed9\u6a21\u578b\u66f4\u5bbd\u7684\u4ee3\u7801\u5e93\u89c6\u91ce\u3002<\/p>\n<h3>\u4e0a\u4e0b\u6587\u6784\u5efa<\/h3>\n<p>\u5355\u7eaf\u628a\u4ee3\u7801\u7247\u6bb5\u6254\u7ed9GPT\u8fd8\u4e0d\u591f\u3002\u5b83\u53ef\u80fd\u770b\u5230User\u7c7b\u7684\u5b9a\u4e49&#xff0c;\u5374\u4e0d\u77e5\u9053main.py\u91cc\u600e\u4e48\u5b9e\u4f8b\u5316\u5b83\u3002\u7f3a\u7684\u662f\u5168\u5c40\u89c6\u89d2\u3002<\/p>\n<p>\u6240\u4ee5\u89e3\u51b3\u529e\u6cd5\u662f\u8bbe\u8ba1\u7cfb\u7edf\u63d0\u793a&#xff0c;\u8ba9\u6a21\u578b\u4ee5\u9ad8\u7ea7\u67b6\u6784\u5e08\u7684\u8eab\u4efd\u6765\u7406\u89e3\u4ee3\u7801&#xff1a;<\/p>\n<p> from langchain.chains import create_retrieval_chain<br \/>\nfrom langchain.chains.combine_documents import create_stuff_documents_chain<br \/>\nfrom langchain_core.prompts import ChatPromptTemplate<br \/>\nfrom langchain_openai import ChatOpenAI  <\/p>\n<p>llm &#061; ChatOpenAI(model&#061;&#034;gpt-4-turbo-preview&#034;, temperature&#061;0)  <\/p>\n<p># The &#034;Stuff&#034; chain puts all retrieved docs into the context window<br \/>\nprompt &#061; ChatPromptTemplate.from_template(&#034;&#034;&#034;<br \/>\nYou are a Senior Software Engineer assisting with a Python legacy codebase.<br \/>\nUse the following pieces of retrieved context to answer the question.<br \/>\nIf the context doesn&#039;t contain the answer, say &#034;I don&#039;t have enough context.&#034;  <\/p>\n<p>CONTEXT FROM REPOSITORY:<br \/>\n{context}  <\/p>\n<p>USER QUESTION:<br \/>\n{input}  <\/p>\n<p>Answer specifically using the class names and variable names found in the context.<br \/>\n&#034;&#034;&#034;)  <\/p>\n<p>combine_docs_chain &#061; create_stuff_documents_chain(llm, prompt)<br \/>\nrag_chain &#061; create_retrieval_chain(retriever, combine_docs_chain)  <\/p>\n<p># Let&#039;s test it on that tricky legacy function<br \/>\nresponse &#061; rag_chain.invoke({&#034;input&#034;: &#034;How do I refactor the PaymentProcessor to use the new AsyncAPI?&#034;})  <\/p>\n<p> print(response[&#034;answer&#034;])<\/p>\n<p>\u8fd9\u6837AI\u4e0d\u518d\u7f16\u9020\u4e0d\u5b58\u5728\u7684\u5bfc\u5165&#xff0c;\u56e0\u4e3a\u5b83\u73b0\u5728\u80fd\u770b\u5230\u5411\u91cf\u5e93\u68c0\u7d22\u51fa\u7684AsyncAPI\u7c7b\u5b9a\u4e49\u548cPaymentProcessor\u7c7b\u3002\u5b83\u4f1a\u544a\u8bc9\u4f60&#xff1a;\u201c\u91cd\u6784PaymentProcessor\u9700\u8981\u4fee\u6539_make_request\u65b9\u6cd5&#xff0c;\u6839\u636e\u4e0a\u4e0b\u6587&#xff0c;AsyncAPI\u521d\u59cb\u5316\u65f6\u9700\u8981await\u5173\u952e\u5b57\u2026\u2026\u201d<\/p>\n<h3>\u4ee3\u7801\u5730\u56fe&#xff1a;\u5e94\u5bf9\u5927\u578b\u4ee3\u7801\u5e93<\/h3>\n<p>\u4e0a\u9762\u7684\u65b9\u6848\u5bf9\u4e2d\u5c0f\u9879\u76ee\u5c31\u5df2\u7ecf\u591f\u7528\u4e86&#xff0c;\u4f46\u662f\u5982\u679c\u4ee3\u7801\u7684\u89c4\u6a21\u5230\u4e86\u5341\u4e07\u884c\u4ee5\u4e0a&#xff0c;\u8fd9\u4e9b\u5de5\u4f5c\u8fd8\u8fdc\u8fdc\u4e0d\u591f\u8986\u76d6\u3002<\/p>\n<p>Aider\u3001Cursor\u8fd9\u7c7b\u5de5\u5177\u91c7\u7528\u7684\u8fdb\u9636\u6280\u672f\u53ebRepo Map&#xff0c;\u4e5f\u5c31\u662f\u628a\u6574\u4e2a\u4ee3\u7801\u5e93\u538b\u7f29\u6210\u4e00\u68f5\u6811\u7ed3\u6784&#xff0c;\u585e\u8fdb\u4e0a\u4e0b\u6587\u7a97\u53e3&#xff1a;<\/p>\n<p> src\/<br \/>\n   auth\/<br \/>\n     login.py:<br \/>\n       &#8211; class AuthManager<br \/>\n       &#8211; def login(user, pass)<br \/>\n   db\/<br \/>\n     models.py:<br \/>\n       &#8211; class User<\/p>\n<p>\u6211\u4eec\u7684\u505a\u6cd5\u662f\u5728\u53d1\u9001\u67e5\u8be2\u524d\u5148\u751f\u6210\u6587\u4ef6\u540d\u548c\u7c7b\u5b9a\u4e49\u7684\u8f7b\u91cf\u7ea7\u6811\u72b6\u7ed3\u6784&#xff0c;\u9644\u52a0\u5230\u7cfb\u7edf\u63d0\u793a\u91cc\u3002\u8fd9\u6837\u6a21\u578b\u80fd\u8bf4&#xff1a;\u201c\u5730\u56fe\u91cc\u6709\u4e2aauth_utils.py&#xff0c;\u4f46\u68c0\u7d22\u7ed3\u679c\u91cc\u6ca1\u5b83\u7684\u5185\u5bb9&#xff0c;\u8981\u4e0d\u8981\u770b\u770b\u90a3\u4e2a\u6587\u4ef6&#xff1f;\u201d<\/p>\n<h3>\u603b\u7ed3<\/h3>\n<p>\u6211\u4eec\u505a\u81ea\u5df1\u505a\u4ee3\u7801\u52a9\u624b\u76ee\u6807\u4e0d\u662f\u5728\u8865\u5168\u901f\u5ea6\u4e0a\u8ddfCopilot\u8f83\u52b2&#xff0c;\u800c\u662f\u5728\u4e8e\u7406\u89e3\u5c42\u9762\u7684\u63d0\u5347\u3002\u6bd4\u5982\u8bf4\u5185\u90e8\u6587\u6863\u3001\u7f16\u7801\u89c4\u8303\u3001\u90a3\u4e9b\u53ea\u6709\u8001\u5458\u5de5\u624d\u77e5\u9053\u7684\u9057\u7559\u6a21\u5757\u90fd\u53ef\u4ee5\u5582\u8fdb\u53bb\u3002\u4ece\u4e00\u4e2a\u9760\u731c\u7684AI&#xff0c;\u53d8\u6210\u4e00\u4e2a\u771f\u6b63\u61c2\u4f60\u4ee3\u7801\u5e93\u7684AI\u3002<\/p>\n<p>https:\/\/avoid.overfit.cn\/post\/e04b69f27ca841b59679a916781b28c6<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f88\u591a\u4eba\u89c9\u5f97\u505a\u4e2aAI\u52a9\u624b\u5c31\u662f\u8c03\u8c03OpenAI\u7684\u63a5\u53e3&#xff0c;\u5176\u5b9e\u8fd9\u6837\u667a\u80fd\u505a\u51fa\u4e00\u4e2a\u901a\u7528\u804a\u5929\u673a\u5668\u4eba\u3002<br \/>\n\u800c\u4ee3\u7801\u52a9\u624b\u9700\u8981\u4e13\u95e8\u4e3a\u4ee3\u7801\u8bbe\u8ba1\u7684\u4e0a\u4e0b\u6587\u611f\u77e5\u7684RAG&#xff08;Retrieval-Augmented Generation&#xff09;\u7ba1\u9053&#xff0c;\u8fd9\u662f\u56e0\u4e3a\u4ee3\u7801\u8ddf\u666e\u901a\u6587\u672c\u4e0d\u4e00\u6837&#xff0c;\u7ed3\u6784\u4e25\u683c&#xff0c;\u800c\u4e14\u4e0d\u80fd\u968f\u4fbf\u6309\u5b57\u7b26\u968f\u4fbf\u8fdb\u884c\u5206\u5272\u3002<br 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