tools/get_weather.py

from asyncio import timeout
from warnings import catch_warnings
import os
from smolagents.tools import Tool
import requests

class GetWeatherTool(Tool):
    name="get_weather"
    description="Get weather information for a specific city using OpenWeatherAPI. Use this tool to fetch current weather data for a given city using the OpenWeatherAPI (e.g., 'Delhi')."
    inputs={'city':{'type':'string',
                    'description':'The name of the city for which to fetch weather information (e.g., "Delhi").'
                    }
            }
    output_type="string"
    
    def __init__(self, api_key:str=None, timeout:int=10):
        super().__init__()
        self.api_key=api_key or os.getenv("OPENWEATHER_API_KEY")
        self.timeout=timeout
        self.base_url="http://api.openweathermap.org/data/2.5/weather"
        
        self.session=requests.Session()
        
    
    def forward(self, city:str) -> str:
        params={
            'q':city,
            'appid':self.api_key,
            'units':'metric'
        }
        try:
            res=self.session.get(self.base_url, params=params, timeout=self.timeout)
            res.raise_for_status()
            data=res.json()
            temp=data['main']['temp']
            desc=data['weather'][0]['description']
            return f"{city}:{temp} C, {desc}"

        except Exception as e:
            return f"failed to fetch weather for {city}: {str(e)}"