OpenWeatherMap
本笔记本介绍如何使用 OpenWeatherMap 组件来获取天气信息。
首先，您需要注册一个 OpenWeatherMap API 密钥：
- 前往 OpenWeatherMap 并在 这里 注册一个 API 密钥
- pip install pyowm
然后我们需要设置一些环境变量：
- 将您的 API 密钥保存到 OPENWEATHERMAP_API_KEY 环境变量中
使用包装器
<!--IMPORTS:[{"imported": "OpenWeatherMapAPIWrapper", "source": "langchain_community.utilities", "docs": "https://python.langchain.com/api_reference/community/utilities/langchain_community.utilities.openweathermap.OpenWeatherMapAPIWrapper.html", "title": "OpenWeatherMap"}]-->
import os
from langchain_community.utilities import OpenWeatherMapAPIWrapper
os.environ["OPENWEATHERMAP_API_KEY"] = ""
weather = 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
<!--IMPORTS:[{"imported": "AgentType", "source": "langchain.agents", "docs": "https://python.langchain.com/api_reference/langchain/agents/langchain.agents.agent_types.AgentType.html", "title": "OpenWeatherMap"}, {"imported": "initialize_agent", "source": "langchain.agents", "docs": "https://python.langchain.com/api_reference/langchain/agents/langchain.agents.initialize.initialize_agent.html", "title": "OpenWeatherMap"}, {"imported": "load_tools", "source": "langchain.agents", "docs": "https://python.langchain.com/api_reference/community/agent_toolkits/langchain_community.agent_toolkits.load_tools.load_tools.html", "title": "OpenWeatherMap"}, {"imported": "OpenAI", "source": "langchain_openai", "docs": "https://python.langchain.com/api_reference/openai/llms/langchain_openai.llms.base.OpenAI.html", "title": "OpenWeatherMap"}]-->
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
)
agent_chain.run("What's the weather like in London?")
[1m> Entering new AgentExecutor chain...[0m
[32;1m[1;3m I need to find out the current weather in London.
Action: OpenWeatherMap
Action Input: London,GB[0m
Observation: [36;1m[1;3mIn 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%[0m
Thought:[32;1m[1;3m 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.[0m
[1m> Finished chain.[0m
'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.'
