OpenWeatherMap

此笔记本介绍了如何使用OpenWeatherMap组件获取天气信息。

首先，您需要注册一个OpenWeatherMap API密钥

1. 访问 OpenWeatherMap 并注册 API 密钥此处
2. pip install pyowm

然后我们需要设置一些环境变量

1. 将您的 API 密钥保存到 OPENWEATHERMAP_API_KEY 环境变量中

使用包装器

import os

from langchain_community.utilities import OpenWeatherMapAPIWrapper

os.environ["OPENWEATHERMAP_API_KEY"] = ""

weather = OpenWeatherMapAPIWrapper()

API 参考：OpenWeatherMapAPIWrapper

weather_data = weather.run("London,GB")
print(weather_data)

In London,GB, the current weather is as follows:
Detailed status: broken clouds
Wind speed: 2.57 m/s, direction: 240°
Humidity: 55%
Temperature: 
  - Current: 20.12°C
  - High: 21.75°C
  - Low: 18.68°C
  - Feels like: 19.62°C
Rain: {}
Heat index: None
Cloud cover: 75%

使用工具

import os

from langchain.agents import AgentType, initialize_agent, load_tools
from langchain_openai import OpenAI

os.environ["OPENAI_API_KEY"] = ""
os.environ["OPENWEATHERMAP_API_KEY"] = ""

llm = OpenAI(temperature=0)

tools = load_tools(["openweathermap-api"], llm)

agent_chain = initialize_agent(
    tools=tools, llm=llm, agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION, verbose=True
)

API 参考：AgentType | initialize_agent | load_tools | OpenAI

agent_chain.run("What's the weather like in London?")

> Entering new AgentExecutor chain...
 I need to find out the current weather in London.
Action: OpenWeatherMap
Action Input: London,GB
Observation: In London,GB, the current weather is as follows:
Detailed status: broken clouds
Wind speed: 2.57 m/s, direction: 240°
Humidity: 56%
Temperature: 
  - Current: 20.11°C
  - High: 21.75°C
  - Low: 18.68°C
  - Feels like: 19.64°C
Rain: {}
Heat index: None
Cloud cover: 75%
Thought: I now know the current weather in London.
Final Answer: The current weather in London is broken clouds, with a wind speed of 2.57 m/s, direction 240°, humidity of 56%, temperature of 20.11°C, high of 21.75°C, low of 18.68°C, and a heat index of None.

> Finished chain.

'The current weather in London is broken clouds, with a wind speed of 2.57 m/s, direction 240°, humidity of 56%, temperature of 20.11°C, high of 21.75°C, low of 18.68°C, and a heat index of None.'

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