39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
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"""Tool for the Wikipedia API."""
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from typing import Optional, Type
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from langchain_core.callbacks import CallbackManagerForToolRun
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from langchain_core.tools import BaseTool
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from pydantic import BaseModel, Field
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from langchain_community.utilities.wikipedia import WikipediaAPIWrapper
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class WikipediaQueryInput(BaseModel):
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"""Input for the WikipediaQuery tool."""
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query: str = Field(description="query to look up on wikipedia")
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class WikipediaQueryRun(BaseTool):
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"""Tool that searches the Wikipedia API."""
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name: str = "wikipedia"
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description: str = (
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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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args_schema: Type[BaseModel] = WikipediaQueryInput
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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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