add the existing OpenWeatherMap tool to the public api (#4292)

[OpenWeatherMapAPIWrapper](f70e18a5b3/docs/modules/agents/tools/examples/openweathermap.ipynb)
works wonderfully, but the _tool_ itself can't be used in master branch.

- added OpenWeatherMap **tool** to the public api, to be loadable with
`load_tools` by using "openweathermap-api" tool name (that name is used
in the existing
[docs](aff33d52c5/docs/modules/agents/tools/getting_started.md),
at the bottom of the page)
- updated OpenWeatherMap tool's **description** to make the input format
match what the API expects (e.g. `London,GB` instead of `'London,GB'`)
- added [ecosystem documentation page for
OpenWeatherMap](f9c41594fe/docs/ecosystem/openweathermap.md)
- added tool usage example to [OpenWeatherMap's
notebook](f9c41594fe/docs/modules/agents/tools/examples/openweathermap.ipynb)

Let me know if there's something I missed or something needs to be
updated! Or feel free to make edits yourself if that makes it easier for
you 🙂

docs/ecosystem/openweathermap.md

@@ -0,0 +1,34 @@
+# OpenWeatherMap API
+
+This page covers how to use the OpenWeatherMap API within LangChain.
+It is broken into two parts: installation and setup, and then references to specific OpenWeatherMap API wrappers.
+
+## Installation and Setup
+
+- Install requirements with `pip install pyowm`
+- Go to OpenWeatherMap and sign up for an account to get your API key [here](https://openweathermap.org/api/)
+- Set your API key as `OPENWEATHERMAP_API_KEY` environment variable
+
+## Wrappers
+
+### Utility
+
+There exists a OpenWeatherMapAPIWrapper utility which wraps this API. To import this utility:
+
+```python
+from langchain.utilities.openweathermap import OpenWeatherMapAPIWrapper
+```
+
+For a more detailed walkthrough of this wrapper, see [this notebook](../modules/agents/tools/examples/openweathermap.ipynb).
+
+### Tool
+
+You can also easily load this wrapper as a Tool (to use with an Agent).
+You can do this with:
+
+```python
+from langchain.agents import load_tools
+tools = load_tools(["openweathermap-api"])
+```
+
+For more information on this, see [this page](../modules/agents/tools/getting_started.md)

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

@@ -1,7 +1,6 @@
 {
  "cells": [
   {
-      "attachments": {},
    "cell_type": "markdown",
    "id": "245a954a",
    "metadata": {},
@@ -16,68 +15,30 @@
     "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"
+    "1. Save your API KEY into OPENWEATHERMAP_API_KEY env variable\n",
+    "\n",
+    "## Use the wrapper"
    ]
   },
   {
    "cell_type": "code",
-      "execution_count": null,
+   "execution_count": 9,
-      "id": "961b3689",
-      "metadata": {
-        "vscode": {
-          "languageId": "shellscript"
-        }
-      },
-      "outputs": [],
-      "source": [
-        "pip install pyowm"
-      ]
-    },
-    {
-      "cell_type": "code",
-      "execution_count": 35,
    "id": "34bb5968",
    "metadata": {},
    "outputs": [],
    "source": [
+    "from langchain.utilities import OpenWeatherMapAPIWrapper\n",
     "import os\n",
-        "os.environ[\"OPENWEATHERMAP_API_KEY\"] = \"\""
+    "\n",
-      ]
+    "os.environ[\"OPENWEATHERMAP_API_KEY\"] = \"\"\n",
-    },
+    "\n",
-    {
-      "cell_type": "code",
-      "execution_count": 36,
-      "id": "ac4910f8",
-      "metadata": {},
-      "outputs": [],
-      "source": [
-        "from langchain.utilities import OpenWeatherMapAPIWrapper"
-      ]
-    },
-    {
-      "cell_type": "code",
-      "execution_count": 37,
-      "id": "84b8f773",
-      "metadata": {},
-      "outputs": [],
-      "source": [
     "weather = OpenWeatherMapAPIWrapper()"
    ]
   },
   {
    "cell_type": "code",
-      "execution_count": 38,
+   "execution_count": 10,
-      "id": "9651f324-e74a-4f08-a28a-89db029f66f8",
+   "id": "ac4910f8",
-      "metadata": {},
-      "outputs": [],
-      "source": [
-        "weather_data = weather.run(\"London,GB\")"
-      ]
-    },
-    {
-      "cell_type": "code",
-      "execution_count": 39,
-      "id": "028f4cba",
    "metadata": {},
    "outputs": [
     {
@@ -85,28 +46,112 @@
      "output_type": "stream",
      "text": [
       "In London,GB, the current weather is as follows:\n",
-            "Detailed status: overcast clouds\n",
+      "Detailed status: broken clouds\n",
-            "Wind speed: 4.63 m/s, direction: 150°\n",
+      "Wind speed: 2.57 m/s, direction: 240°\n",
-            "Humidity: 67%\n",
+      "Humidity: 55%\n",
       "Temperature: \n",
-            "  - Current: 5.35°C\n",
+      "  - Current: 20.12°C\n",
-            "  - High: 6.26°C\n",
+      "  - High: 21.75°C\n",
-            "  - Low: 3.49°C\n",
+      "  - Low: 18.68°C\n",
-            "  - Feels like: 1.95°C\n",
+      "  - Feels like: 19.62°C\n",
       "Rain: {}\n",
       "Heat index: None\n",
-            "Cloud cover: 100%\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": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "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"
+     ]
+    },
+    {
+     "data": {
+      "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?\")"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-      "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -120,7 +165,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-      "version": "3.11.2"
+   "version": "3.8.16"
   }
  },
  "nbformat": 4,

docs/modules/agents/tools/getting_started.md

@@ -156,7 +156,7 @@ Below is a list of all supported tools and relevant information:
 **openweathermap-api**
 
 - Tool Name: OpenWeatherMap
-- Tool Description: A wrapper around OpenWeatherMap API. Useful for fetching current weather information for a specified location. Input should be a location string (e.g. 'London,GB').
+- Tool Description: A wrapper around OpenWeatherMap API. Useful for fetching current weather information for a specified location. Input should be a location string (e.g. London,GB).
 - Notes: A connection to the OpenWeatherMap API (https://api.openweathermap.org), specifically the `/data/2.5/weather` endpoint.
 - Requires LLM: No
 - Extra Parameters: `openweathermap_api_key` (your API key to access this endpoint)

langchain/agents/load_tools.py

@@ -34,6 +34,7 @@ from langchain.tools.searx_search.tool import SearxSearchResults, SearxSearchRun
 from langchain.tools.shell.tool import ShellTool
 from langchain.tools.wikipedia.tool import WikipediaQueryRun
 from langchain.tools.wolfram_alpha.tool import WolframAlphaQueryRun
+from langchain.tools.openweathermap.tool import OpenWeatherMapQueryRun
 from langchain.utilities import ArxivAPIWrapper
 from langchain.utilities.bing_search import BingSearchAPIWrapper
 from langchain.utilities.duckduckgo_search import DuckDuckGoSearchAPIWrapper
@@ -45,6 +46,7 @@ from langchain.utilities.searx_search import SearxSearchWrapper
 from langchain.utilities.serpapi import SerpAPIWrapper
 from langchain.utilities.wikipedia import WikipediaAPIWrapper
 from langchain.utilities.wolfram_alpha import WolframAlphaAPIWrapper
+from langchain.utilities.openweathermap import OpenWeatherMapAPIWrapper
 
 
 def _get_python_repl() -> BaseTool:
@@ -243,6 +245,10 @@ def _get_scenexplain(**kwargs: Any) -> BaseTool:
     return SceneXplainTool(**kwargs)
 
 
+def _get_openweathermap(**kwargs: Any) -> BaseTool:
+    return OpenWeatherMapQueryRun(api_wrapper=OpenWeatherMapAPIWrapper(**kwargs))
+
+
 _EXTRA_LLM_TOOLS: Dict[
     str,
     Tuple[Callable[[Arg(BaseLanguageModel, "llm"), KwArg(Any)], BaseTool], List[str]],
@@ -284,6 +290,7 @@ _EXTRA_OPTIONAL_TOOLS: Dict[str, Tuple[Callable[[KwArg(Any)], BaseTool], List[st
         ["awslambda_tool_name", "awslambda_tool_description", "function_name"],
     ),
     "sceneXplain": (_get_scenexplain, []),
+    "openweathermap-api": (_get_openweathermap, ["openweathermap_api_key"]),
 }
 
 

langchain/tools/__init__.py

@@ -25,6 +25,7 @@ from langchain.tools.ifttt import IFTTTWebhook
 from langchain.tools.metaphor_search import MetaphorSearchResults
 from langchain.tools.openapi.utils.api_models import APIOperation
 from langchain.tools.openapi.utils.openapi_utils import OpenAPISpec
+from langchain.tools.openweathermap.tool import OpenWeatherMapQueryRun
 from langchain.tools.playwright import (
     ClickTool,
     CurrentWebPageTool,
@@ -84,6 +85,7 @@ __all__ = [
     "NavigateBackTool",
     "NavigateTool",
     "OpenAPISpec",
+    "OpenWeatherMapQueryRun",
     "ReadFileTool",
     "SceneXplainTool",
     "ShellTool",

langchain/tools/openweathermap/__init__.py

@@ -1 +1,8 @@
 """OpenWeatherMap API toolkit."""
+
+
+from langchain.tools.openweathermap.tool import OpenWeatherMapQueryRun
+
+__all__ = [
+    "OpenWeatherMapQueryRun",
+]

langchain/tools/openweathermap/tool.py

@@ -1,5 +1,13 @@
 """Tool for the OpenWeatherMap API."""
 
+from typing import Optional
+
+from pydantic import Field
+
+from langchain.callbacks.manager import (
+    AsyncCallbackManagerForToolRun,
+    CallbackManagerForToolRun,
+)
 from langchain.tools.base import BaseTool
 from langchain.utilities import OpenWeatherMapAPIWrapper
 
@@ -7,23 +15,27 @@ from langchain.utilities import OpenWeatherMapAPIWrapper
 class OpenWeatherMapQueryRun(BaseTool):
     """Tool that adds the capability to query using the OpenWeatherMap API."""
 
-    api_wrapper: OpenWeatherMapAPIWrapper
+    api_wrapper: OpenWeatherMapAPIWrapper = Field(
+        default_factory=OpenWeatherMapAPIWrapper
+    )
 
     name = "OpenWeatherMap"
     description = (
         "A wrapper around OpenWeatherMap API. "
         "Useful for fetching current weather information for a specified location. "
-        "Input should be a location string (e.g. 'London,GB')."
+        "Input should be a location string (e.g. London,GB)."
     )
 
-    def __init__(self) -> None:
+    def _run(
-        self.api_wrapper = OpenWeatherMapAPIWrapper()
+        self, location: str, run_manager: Optional[CallbackManagerForToolRun] = None
-        return
+    ) -> str:
-
-    def _run(self, location: str) -> str:
         """Use the OpenWeatherMap tool."""
         return self.api_wrapper.run(location)
 
-    async def _arun(self, location: str) -> str:
+    async def _arun(
+        self,
+        location: str,
+        run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
+    ) -> str:
         """Use the OpenWeatherMap tool asynchronously."""
         raise NotImplementedError("OpenWeatherMapQueryRun does not support async")

tests/unit_tests/tools/test_public_api.py

@@ -37,6 +37,7 @@ _EXPECTED = [
     "NavigateBackTool",
     "NavigateTool",
     "OpenAPISpec",
+    "OpenWeatherMapQueryRun",
     "ReadFileTool",
     "SceneXplainTool",
     "ShellTool",