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fix: type hint of get_chat_history in BaseConversationalRetrievalChain (#7461)

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The type hint of `get_chat_history` property in
`BaseConversationalRetrievalChain` is incorrect. @baskaryan
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James Yin 2023-07-10 14:14:00 +08:00 committed by GitHub
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commit a5fd8873b1
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langchain/chains/conversational_retrieval/base.py
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@ -72,7 +72,7 @@ class BaseConversationalRetrievalChain(Chain):
"""Return the retrieved source documents as part of the final result."""
return_generated_question: bool = False
"""Return the generated question as part of the final result."""
get_chat_history: Optional[Callable[[CHAT_TURN_TYPE], str]] = None
get_chat_history: Optional[Callable[[List[CHAT_TURN_TYPE]], str]] = None
"""An optional function to get a string of the chat history.
If None is provided, will use a default."""