langchain/docs/modules/agents/tools/examples/openweathermap.ipynb

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    "# OpenWeatherMap API\n",
    "\n",
    "This notebook goes over how to use the OpenWeatherMap component to fetch weather information.\n",
    "\n",
    "First, you need to sign up for an OpenWeatherMap API key:\n",
    "\n",
    "1. Go to OpenWeatherMap and sign up for an API key [here](https://openweathermap.org/api/)\n",
    "2. pip install pyowm\n",
    "\n",
    "Then we will need to set some environment variables:\n",
    "1. Save your API KEY into OPENWEATHERMAP_API_KEY env variable\n",
    "\n",
    "## Use the wrapper"
   ]
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  {
   "cell_type": "code",
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   "source": [
    "from langchain.utilities import OpenWeatherMapAPIWrapper\n",
    "import os\n",
    "\n",
    "os.environ[\"OPENWEATHERMAP_API_KEY\"] = \"\"\n",
    "\n",
    "weather = OpenWeatherMapAPIWrapper()"
   ]
  },
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     "text": [
      "In London,GB, the current weather is as follows:\n",
      "Detailed status: broken clouds\n",
      "Wind speed: 2.57 m/s, direction: 240°\n",
      "Humidity: 55%\n",
      "Temperature: \n",
      "  - Current: 20.12°C\n",
      "  - High: 21.75°C\n",
      "  - Low: 18.68°C\n",
      "  - Feels like: 19.62°C\n",
      "Rain: {}\n",
      "Heat index: None\n",
      "Cloud cover: 75%\n"
     ]
    }
   ],
   "source": [
    "weather_data = weather.run(\"London,GB\")\n",
    "print(weather_data)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e73cfa56",
   "metadata": {},
   "source": [
    "## Use the tool"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "b3367417",
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.llms import OpenAI\n",
    "from langchain.agents import load_tools, initialize_agent, AgentType\n",
    "import os\n",
    "\n",
    "os.environ[\"OPENAI_API_KEY\"] = \"\"\n",
    "os.environ[\"OPENWEATHERMAP_API_KEY\"] = \"\"\n",
    "\n",
    "llm = OpenAI(temperature=0)\n",
    "\n",
    "tools = load_tools([\"openweathermap-api\"], llm)\n",
    "\n",
    "agent_chain = initialize_agent(\n",
    "    tools=tools,\n",
    "    llm=llm,\n",
    "    agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION,\n",
    "    verbose=True\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "bf4f6854",
   "metadata": {},
   "outputs": [
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     "text": [
      "\n",
      "\n",
      "\u001b[1m> Entering new AgentExecutor chain...\u001b[0m\n",
      "\u001b[32;1m\u001b[1;3m I need to find out the current weather in London.\n",
      "Action: OpenWeatherMap\n",
      "Action Input: London,GB\u001b[0m\n",
      "Observation: \u001b[36;1m\u001b[1;3mIn London,GB, the current weather is as follows:\n",
      "Detailed status: broken clouds\n",
      "Wind speed: 2.57 m/s, direction: 240°\n",
      "Humidity: 56%\n",
      "Temperature: \n",
      "  - Current: 20.11°C\n",
      "  - High: 21.75°C\n",
      "  - Low: 18.68°C\n",
      "  - Feels like: 19.64°C\n",
      "Rain: {}\n",
      "Heat index: None\n",
      "Cloud cover: 75%\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I now know the current weather in London.\n",
      "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.\u001b[0m\n",
      "\n",
      "\u001b[1m> Finished chain.\u001b[0m\n"
     ]
    },
    {
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      "text/plain": [
       "'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.'"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "agent_chain.run(\"What's the weather like in London?\")"
   ]
  }
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