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40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
"""Tool for the Wikipedia API."""
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from typing import Optional
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from langchain.callbacks.manager import (
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AsyncCallbackManagerForToolRun,
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CallbackManagerForToolRun,
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)
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from langchain.tools.base import BaseTool
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from langchain.utilities.wikipedia import WikipediaAPIWrapper
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class WikipediaQueryRun(BaseTool):
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"""Tool that adds the capability to search using the Wikipedia API."""
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name = "Wikipedia"
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description = (
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"A wrapper around Wikipedia. "
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"Useful for when you need to answer general questions about "
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"people, places, companies, facts, historical events, or other subjects. "
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"Input should be a search query."
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)
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api_wrapper: WikipediaAPIWrapper
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def _run(
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self,
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query: str,
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run_manager: Optional[CallbackManagerForToolRun] = None,
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) -> str:
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"""Use the Wikipedia tool."""
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return self.api_wrapper.run(query)
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async def _arun(
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self,
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query: str,
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run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
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) -> str:
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"""Use the Wikipedia tool asynchronously."""
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raise NotImplementedError("WikipediaQueryRun does not support async")
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