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80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
"""Util that calls OpenWeatherMap using PyOWM."""
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from typing import Any, Dict, Optional
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from pydantic import Extra, root_validator
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from langchain.tools.base import BaseModel
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from langchain.utils import get_from_dict_or_env
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class OpenWeatherMapAPIWrapper(BaseModel):
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"""Wrapper for OpenWeatherMap API using PyOWM.
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Docs for using:
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1. Go to OpenWeatherMap and sign up for an API key
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3. Save your API KEY into OPENWEATHERMAP_API_KEY env variable
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4. pip install wolframalpha
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"""
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owm: Any
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openweathermap_api_key: Optional[str] = None
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class Config:
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"""Configuration for this pydantic object."""
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extra = Extra.forbid
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@root_validator(pre=True)
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def validate_environment(cls, values: Dict) -> Dict:
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"""Validate that api key exists in environment."""
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openweathermap_api_key = get_from_dict_or_env(
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values, "openweathermap_api_key", "OPENWEATHERMAP_API_KEY"
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)
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values["openweathermap_api_key"] = openweathermap_api_key
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try:
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import pyowm
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except ImportError:
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raise ImportError(
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"pyowm is not installed. " "Please install it with `pip install pyowm`"
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)
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owm = pyowm.OWM(openweathermap_api_key)
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values["owm"] = owm
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return values
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def _format_weather_info(self, location: str, w: Any) -> str:
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detailed_status = w.detailed_status
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wind = w.wind()
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humidity = w.humidity
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temperature = w.temperature("celsius")
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rain = w.rain
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heat_index = w.heat_index
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clouds = w.clouds
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return (
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f"In {location}, the current weather is as follows:\n"
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f"Detailed status: {detailed_status}\n"
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f"Wind speed: {wind['speed']} m/s, direction: {wind['deg']}°\n"
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f"Humidity: {humidity}%\n"
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f"Temperature: \n"
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f" - Current: {temperature['temp']}°C\n"
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f" - High: {temperature['temp_max']}°C\n"
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f" - Low: {temperature['temp_min']}°C\n"
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f" - Feels like: {temperature['feels_like']}°C\n"
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f"Rain: {rain}\n"
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f"Heat index: {heat_index}\n"
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f"Cloud cover: {clouds}%"
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)
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def run(self, location: str) -> str:
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"""Get the current weather information for a specified location."""
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mgr = self.owm.weather_manager()
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observation = mgr.weather_at_place(location)
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w = observation.weather
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return self._format_weather_info(location, w)
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