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changes to qa chain (#543)

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Harrison Chase 2023-01-05 09:33:59 -08:00 committed by GitHub
parent 5b4c972fc5
commit 0c2f7d8da1
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2 changed files with 4 additions and 15 deletions
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3
langchain/chains/qa_with_sources/__init__.py
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@ -25,6 +25,7 @@ class LoadingCallable(Protocol):
def _load_stuff_chain(
llm: BaseLLM,
prompt: BasePromptTemplate = stuff_prompt.PROMPT,
document_prompt: BasePromptTemplate = stuff_prompt.EXAMPLE_PROMPT,
document_variable_name: str = "summaries",
verbose: Optional[bool] = None,
**kwargs: Any,
@ -33,7 +34,7 @@ def _load_stuff_chain(
return StuffDocumentsChain(
llm_chain=llm_chain,
document_variable_name=document_variable_name,
document_prompt=stuff_prompt.EXAMPLE_PROMPT,
document_prompt=document_prompt,
verbose=verbose,
**kwargs,
)

16
langchain/chains/qa_with_sources/base.py
View File

@ -81,18 +81,6 @@ class BaseQAWithSourcesChain(Chain, BaseModel, ABC):
"""
return [self.answer_key, self.sources_answer_key]
@root_validator(pre=True)
def validate_question_chain(cls, values: Dict) -> Dict:
"""Validate question chain."""
llm_question_chain = values["combine_document_chain"].llm_chain
if len(llm_question_chain.input_keys) != 2:
raise ValueError(
f"The llm_question_chain should have two inputs: a content key "
f"(the first one) and a question key (the second one). Got "
f"{llm_question_chain.input_keys}."
)
return values
@root_validator()
def validate_combine_chain_can_be_constructed(cls, values: Dict) -> Dict:
"""Validate that the combine chain can be constructed."""
@ -107,8 +95,8 @@ class BaseQAWithSourcesChain(Chain, BaseModel, ABC):
def _call(self, inputs: Dict[str, Any]) -> Dict[str, str]:
docs = self._get_docs(inputs)
answer, _ = self.combine_document_chain.combine_docs(docs, **inputs)
if "\nSOURCES: " in answer:
answer, sources = answer.split("\nSOURCES: ")
if "SOURCES: " in answer:
answer, sources = answer.split("SOURCES: ")
else:
sources = ""
return {self.answer_key: answer, self.sources_answer_key: sources}