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Fix: Handle empty documents in ContextualCompressionRetriever (Issue #5304) (#5306)

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# Fix: Handle empty documents in ContextualCompressionRetriever (Issue
#5304)

Fixes #5304 

Prevent cohere.error.CohereAPIError caused by an empty list of documents
by adding a condition to check if the input documents list is empty in
the compress_documents method. If the list is empty, return an empty
list immediately, avoiding the error and unnecessary processing.

@dev2049

---------

Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>
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玄猫 2023-05-29 04:19:34 +08:00 committed by GitHub
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langchain/retrievers/document_compressors/cohere_rerank.py
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@ -50,6 +50,8 @@ class CohereRerank(BaseDocumentCompressor):
def compress_documents(
self, documents: Sequence[Document], query: str
) -> Sequence[Document]:
if len(documents) == 0: # to avoid empty api call
return []
doc_list = list(documents)
_docs = [d.page_content for d in doc_list]
results = self.client.rerank(