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langchain/langchain/tools/google_places/tool.py

47 lines
1.4 KiB
Python

"""Tool for the Google search API."""
from typing import Optional, Type
from pydantic import BaseModel, Field
from langchain.callbacks.manager import (
AsyncCallbackManagerForToolRun,
CallbackManagerForToolRun,
)
from langchain.tools.base import BaseTool
from langchain.utilities.google_places_api import GooglePlacesAPIWrapper
class GooglePlacesSchema(BaseModel):
query: str = Field(..., description="Query for google maps")
class GooglePlacesTool(BaseTool):
"""Tool that adds the capability to query the Google places API."""
name = "google_places"
description = (
"A wrapper around Google Places. "
"Useful for when you need to validate or "
"discover addressed from ambiguous text. "
"Input should be a search query."
)
api_wrapper: GooglePlacesAPIWrapper = Field(default_factory=GooglePlacesAPIWrapper)
args_schema: Type[BaseModel] = GooglePlacesSchema
def _run(
self,
query: str,
run_manager: Optional[CallbackManagerForToolRun] = None,
) -> str:
"""Use the tool."""
return self.api_wrapper.run(query)
async def _arun(
self,
query: str,
run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
) -> str:
"""Use the tool asynchronously."""
raise NotImplementedError("GooglePlacesRun does not support async")