mirror of
https://github.com/hwchase17/langchain
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30 lines
944 B
Python
30 lines
944 B
Python
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from typing import Optional
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from langchain_core.callbacks import CallbackManagerForToolRun
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from langchain_core.pydantic_v1 import Field
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from langchain_core.tools import BaseTool
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from langchain_community.utilities.pubmed import PubMedAPIWrapper
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class PubmedQueryRun(BaseTool):
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"""Tool that searches the PubMed API."""
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name: str = "PubMed"
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description: str = (
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"A wrapper around PubMed. "
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"Useful for when you need to answer questions about medicine, health, "
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"and biomedical topics "
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"from biomedical literature, MEDLINE, life science journals, and online books. "
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"Input should be a search query."
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)
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api_wrapper: PubMedAPIWrapper = Field(default_factory=PubMedAPIWrapper)
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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 PubMed tool."""
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return self.api_wrapper.run(query)
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