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Fix NoneType has no len() in DDG tool (#3334)

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Per
46ac914daa/duckduckgo_search/ddg.py (L109),
ddg function actually returns None when there is no result.
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Dianliang233 2023-04-24 12:29:49 +08:00 committed by GitHub
parent 2c0023393b
commit 0cf934ce7d
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1 changed files with 2 additions and 2 deletions
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4
langchain/utilities/duckduckgo_search.py
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@ -49,7 +49,7 @@ class DuckDuckGoSearchAPIWrapper(BaseModel):
time=self.time,
max_results=self.max_results,
)
if len(results) == 0:
if results is None or len(results) == 0:
return "No good DuckDuckGo Search Result was found"
snippets = [result["body"] for result in results]
return " ".join(snippets)
@ -77,7 +77,7 @@ class DuckDuckGoSearchAPIWrapper(BaseModel):
max_results=num_results,
)
if len(results) == 0:
if results is None or len(results) == 0:
return [{"Result": "No good DuckDuckGo Search Result was found"}]
def to_metadata(result: Dict) -> Dict: