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Fix IndexError when input_list is Empty in prep_prompts (#5769)

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This MR corrects the IndexError arising in prep_prompts method when no
documents are returned from a similarity search.

Fixes #1733 
Co-authored-by: Sam Groenjes <sam.groenjes@darkwolfsolutions.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>
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Sam Groenjes 2023-08-11 00:50:39 -05:00 committed by GitHub
parent c0acbdca1b
commit 2184e3a400
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1 changed files with 4 additions and 0 deletions
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4
libs/langchain/langchain/chains/llm.py
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@ -127,6 +127,8 @@ class LLMChain(Chain):
) -> Tuple[List[PromptValue], Optional[List[str]]]:
"""Prepare prompts from inputs."""
stop = None
if len(input_list) == 0:
return [], stop
if "stop" in input_list[0]:
stop = input_list[0]["stop"]
prompts = []
@ -151,6 +153,8 @@ class LLMChain(Chain):
) -> Tuple[List[PromptValue], Optional[List[str]]]:
"""Prepare prompts from inputs."""
stop = None
if len(input_list) == 0:
return [], stop
if "stop" in input_list[0]:
stop = input_list[0]["stop"]
prompts = []