docs: replace initialize_agent with create_react_agent in openweathermap.ipynb (#31115)

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---------

Co-authored-by: Chester Curme <chester.curme@gmail.com>

Author: MichaelLi65535

docs/docs/integrations/tools/openweathermap.ipynb

@@ -22,8 +22,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
-   "id": "34bb5968",
+   "execution_count": 1,
+   "id": "8b81a74e-db10-4e8d-9f90-83219df30ab3",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Note: you may need to restart the kernel to use updated packages.\n"
+     ]
+    }
+   ],
+   "source": [
+    "%pip install --upgrade --quiet pyowm"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "78ab9fcd-bb7b-434b-9a38-0a9249e35768",
    "metadata": {},
    "outputs": [],
    "source": [
@@ -38,26 +56,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
-   "id": "ac4910f8",
+   "execution_count": 3,
+   "id": "0a8aa4b0-6aea-4172-9546-361e127a4a02",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "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",
+      "Detailed status: overcast clouds\n",
+      "Wind speed: 4.12 m/s, direction: 10°\n",
+      "Humidity: 51%\n",
       "Temperature: \n",
-      "  - Current: 20.12°C\n",
-      "  - High: 21.75°C\n",
-      "  - Low: 18.68°C\n",
-      "  - Feels like: 19.62°C\n",
+      "  - Current: 12.82°C\n",
+      "  - High: 13.98°C\n",
+      "  - Low: 12.01°C\n",
+      "  - Feels like: 11.49°C\n",
       "Rain: {}\n",
       "Heat index: None\n",
-      "Cloud cover: 75%\n"
+      "Cloud cover: 100%\n"
      ]
     }
    ],
@@ -76,76 +94,82 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
-   "id": "b3367417",
+   "execution_count": 4,
+   "id": "402c832c-87c7-4088-b80f-ec1924a43796",
    "metadata": {},
    "outputs": [],
    "source": [
     "import os\n",
     "\n",
-    "from langchain.agents import AgentType, initialize_agent, load_tools\n",
-    "from langchain_openai import OpenAI\n",
+    "from langgraph.prebuilt import create_react_agent\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, llm=llm, agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION, verbose=True\n",
-    ")"
+    "tools = [weather.run]\n",
+    "agent = create_react_agent(\"openai:gpt-4.1-mini\", tools)"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
-   "id": "bf4f6854",
+   "execution_count": 5,
+   "id": "9b423a92-1568-4ee2-9c7d-3b9acf7756a1",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
+      "================================\u001b[1m Human Message \u001b[0m=================================\n",
       "\n",
+      "What's the weather like in London?\n",
+      "==================================\u001b[1m Ai Message \u001b[0m==================================\n",
+      "Tool Calls:\n",
+      "  run (call_6vPq9neyy7oOnht29ExidE2g)\n",
+      " Call ID: call_6vPq9neyy7oOnht29ExidE2g\n",
+      "  Args:\n",
+      "    location: London\n",
+      "=================================\u001b[1m Tool Message \u001b[0m=================================\n",
+      "Name: run\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",
+      "In London, the current weather is as follows:\n",
+      "Detailed status: overcast clouds\n",
+      "Wind speed: 4.12 m/s, direction: 10°\n",
+      "Humidity: 51%\n",
       "Temperature: \n",
-      "  - Current: 20.11°C\n",
-      "  - High: 21.75°C\n",
-      "  - Low: 18.68°C\n",
-      "  - Feels like: 19.64°C\n",
+      "  - Current: 12.82°C\n",
+      "  - High: 13.98°C\n",
+      "  - Low: 12.01°C\n",
+      "  - Feels like: 11.49°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",
+      "Cloud cover: 100%\n",
+      "==================================\u001b[1m Ai Message \u001b[0m==================================\n",
       "\n",
-      "\u001b[1m> Finished chain.\u001b[0m\n"
+      "The weather in London is currently overcast with 100% cloud cover. The temperature is around 12.82°C, feeling like 11.49°C. The wind is blowing at 4.12 m/s from the direction of 10°. Humidity is at 51%. The high for the day is 13.98°C, and the low is 12.01°C.\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?\")"
+    "input_message = {\n",
+    "    \"role\": \"user\",\n",
+    "    \"content\": (\"What's the weather like in London?\"),\n",
+    "}\n",
+    "\n",
+    "for step in agent.stream(\n",
+    "    {\"messages\": [input_message]},\n",
+    "    stream_mode=\"values\",\n",
+    "):\n",
+    "    step[\"messages\"][-1].pretty_print()"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "f2af226a-9cca-468d-b07f-0a928ea61f48",
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
@@ -164,7 +188,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.12"
+   "version": "3.13.3"
   }
  },
  "nbformat": 4,