Ah%SrSSKJr SSKJrJrJr SSKJr SSK J r J r SSK J r SSKJr SSKJr SS KJr SS KJr SS KJr SS KJr SS KJr SSKJr SSKJrJ r J!r! SSK"J#r$ "SS\5r%\$SSSSSSS.S\ S\S\&S\'S\'S\'S\\ S \ S!\S"\4S#jjr(SSSSSS$.S\ S\\S\'S\\&S\\ S \ S!\S"\4S%jjr)SSS&SSSSSSSS'S(. S\ S)\\S*\\S+\'S,\'S-\\S.\\ S/\\ S\\&S\\ S \ S0\*S!\S"\4S1jjr+SSS2S3SSSSS4.S\ S)\\S5\\S\'S6\'S7\\ S\\&S\\ S \ S!\S"\4S8jjr,\"S9S:S;S<9S?S\ S=\'S\\&S\\ S!\S"\4 S>jj5r-g)@zLoad question answering chains.)Mapping)AnyOptionalProtocol) deprecated)BaseCallbackManager Callbacks)BaseLanguageModel)BasePromptTemplate)ReduceDocumentsChain)BaseCombineDocumentsChain)MapReduceDocumentsChain)MapRerankDocumentsChain)RefineDocumentsChain)StuffDocumentsChain)LLMChain)map_reduce_promptrefine_prompts stuff_prompt)PROMPTc.\rSrSrSrS\S\S\4SjrSr g) LoadingCallablez2Interface for loading the combine documents chain.llmkwargsreturnc g)z-Callable to load the combine documents chain.N)selfrrs a/var/www/html/shao/venv/lib/python3.13/site-packages/langchain/chains/question_answering/chain.py__call__LoadingCallable.__call__srN) __name__ __module__ __qualname____firstlineno____doc__r rr r!__static_attributes__rr#r rrs&<< << #  S/ ! $%+ ,!&!1# $B-  2 7!/  # @5)    r# context_strexisting_answer)r? refine_promptr/initial_response_name refine_llmr.r2r3rYrZr[c U=(d [RRU5n U=(d [RRU5n [ UU UUUS9n U=(d Un [ U U UUUS9n[ SU UUUUUUS.U D6$)Nr5)initial_llm_chainrefine_llm_chainr/rZr.r2r3r)rrKr;REFINE_PROMPT_SELECTORrr)rr?rYr/rZr[r.r2r3rrN_refine_prompt initial_chain _refine_llm refine_chains r _load_refine_chainrds R>BBMMcR#n&K&K&V&V 'N ) M#K ) L '%53)    r#z0.2.13z1.0a1This class is deprecated. See the following migration guides for replacements based on `chain_type`: stuff: https://python.langchain.com/docs/versions/migrating_chains/stuff_docs_chain map_reduce: https://python.langchain.com/docs/versions/migrating_chains/map_reduce_chain refine: https://python.langchain.com/docs/versions/migrating_chains/refine_chain map_rerank: https://python.langchain.com/docs/versions/migrating_chains/map_rerank_docs_chain See also guides on retrieval and question-answering here: https://python.langchain.com/docs/how_to/#qa-with-rag)sinceremovalmessage chain_typec [[[[S.nX;a!SUSUR 53n[ U5eXQ"U4UUS.UD6$)aLoad question answering chain. Args: llm: Language Model to use in the chain. chain_type: Type of document combining chain to use. Should be one of "stuff", "map_reduce", "map_rerank", and "refine". verbose: Whether chains should be run in verbose mode or not. Note that this applies to all chains that make up the final chain. callback_manager: Callback manager to use for the chain. Returns: A chain to use for question answering. )stuff map_reducerefine map_rerankzGot unsupported chain type: z. Should be one of )r.r2)r=rVrdr7keysrM)rrhr.r2rloader_mappingrTs r load_qa_chainrpsyF#,$, 5N '*:,7 . 3 3 56 8 o  %  )    r#)rjNN).r(collections.abcrtypingrrrlangchain_core._apirlangchain_core.callbacksrr langchain_core.language_modelsr langchain_core.promptsr langchain.chainsr 'langchain.chains.combine_documents.baser -langchain.chains.combine_documents.map_reducer-langchain.chains.combine_documents.map_rerankr)langchain.chains.combine_documents.refiner(langchain.chains.combine_documents.stuffrlangchain.chains.llmr#langchain.chains.question_answeringrrr5langchain.chains.question_answering.map_rerank_promptrMAP_RERANK_PROMPTrboolstrr7r=intrVrdrprr#r rsK%#***C<51MQQJH)