Remove multi-input tool section (#3810)

Moving to new notebook. Will re-intro w/ new agent

docs/modules/agents/tools/custom_tools.ipynb

@@ -674,153 +674,6 @@
    "source": [
     "agent.run(\"whats 2**.12\")"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "8aa3c353-bd89-467c-9c27-b83a90cd4daa",
-   "metadata": {},
-   "source": [
-    "## Multi-argument tools\n",
-    "\n",
-    "Many functions expect structured inputs. These can also be supported using the Tool decorator or by directly subclassing `BaseTool`! We have to modify the LLM's OutputParser to map its string output to a dictionary to pass to the action, however."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 24,
-   "id": "537bc628",
-   "metadata": {
-    "tags": []
-   },
-   "outputs": [],
-   "source": [
-    "from typing import Optional, Union\n",
-    "\n",
-    "@tool\n",
-    "def custom_search(k: int, query: str, other_arg: Optional[str] = None):\n",
-    "    \"\"\"The custom search function.\"\"\"\n",
-    "    return f\"Here are the results for the custom search: k={k}, query={query}, other_arg={other_arg}\""
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 25,
-   "id": "d5c992cf-776a-40cd-a6c4-e7cf65ea709e",
-   "metadata": {
-    "tags": []
-   },
-   "outputs": [],
-   "source": [
-    "import re\n",
-    "from langchain.schema import (\n",
-    "    AgentAction,\n",
-    "    AgentFinish,\n",
-    ")\n",
-    "from langchain.agents import AgentOutputParser\n",
-    "\n",
-    "# We will add a custom parser to map the arguments to a dictionary\n",
-    "class CustomOutputParser(AgentOutputParser):\n",
-    "    \n",
-    "    def parse_tool_input(self, action_input: str) -> dict:\n",
-    "        # Regex pattern to match arguments and their values\n",
-    "        pattern = r\"(\\w+)\\s*=\\s*(None|\\\"[^\\\"]*\\\"|\\d+)\"\n",
-    "        matches = re.findall(pattern, action_input)\n",
-    "        \n",
-    "        if not matches:\n",
-    "            raise ValueError(f\"Could not parse action input: `{action_input}`\")\n",
-    "\n",
-    "        # Create a dictionary with the parsed arguments and their values\n",
-    "        parsed_input = {}\n",
-    "        for arg, value in matches:\n",
-    "            if value == \"None\":\n",
-    "                parsed_value = None\n",
-    "            elif value.isdigit():\n",
-    "                parsed_value = int(value)\n",
-    "            else:\n",
-    "                parsed_value = value.strip('\"')\n",
-    "            parsed_input[arg] = parsed_value\n",
-    "\n",
-    "        return parsed_input\n",
-    "    \n",
-    "    def parse(self, llm_output: str) -> Union[AgentAction, AgentFinish]:\n",
-    "        # Check if agent should finish\n",
-    "        if \"Final Answer:\" in llm_output:\n",
-    "            return AgentFinish(\n",
-    "                # Return values is generally always a dictionary with a single `output` key\n",
-    "                # It is not recommended to try anything else at the moment :)\n",
-    "                return_values={\"output\": llm_output.split(\"Final Answer:\")[-1].strip()},\n",
-    "                log=llm_output,\n",
-    "            )\n",
-    "        # Parse out the action and action input\n",
-    "        regex = r\"Action\\s*\\d*\\s*:(.*?)\\nAction\\s*\\d*\\s*Input\\s*\\d*\\s*:[\\s]*(.*)\"\n",
-    "        match = re.search(regex, llm_output, re.DOTALL)\n",
-    "        if not match:\n",
-    "            raise ValueError(f\"Could not parse LLM output: `{llm_output}`\")\n",
-    "        action = match.group(1).strip()\n",
-    "        action_input = match.group(2)\n",
-    "        tool_input = self.parse_tool_input(action_input)\n",
-    "        # Return the action and action \n",
-    "        return AgentAction(tool=action, tool_input=tool_input, log=llm_output)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 26,
-   "id": "68269547-1482-4138-a6ea-58f00b4a9548",
-   "metadata": {
-    "tags": []
-   },
-   "outputs": [],
-   "source": [
-    "llm = OpenAI(temperature=0)\n",
-    "agent = initialize_agent([custom_search], llm, agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION, verbose=True, agent_kwargs={\"output_parser\": CustomOutputParser()})"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 27,
-   "id": "0947835a-691c-4f51-b8f4-6744e0e48ab1",
-   "metadata": {
-    "tags": []
-   },
-   "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 use a search function to find the answer\n",
-      "Action: custom_search\n",
-      "Action Input: k=1, query=\"me\"\u001b[0m\u001b[36;1m\u001b[1;3mHere are the results for the custom search: k=1, query=me, other_arg=None\u001b[0m\u001b[32;1m\u001b[1;3m I now know the final answer\n",
-      "Final Answer: The results of the custom search for k=1, query=me, other_arg=None.\u001b[0m\n",
-      "\n",
-      "\u001b[1m> Finished chain.\u001b[0m\n"
-     ]
-    },
-    {
-     "data": {
-      "text/plain": [
-       "'The results of the custom search for k=1, query=me, other_arg=None.'"
-      ]
-     },
-     "execution_count": 27,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "agent.run(\"Search for me and tell me whatever it says\")"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "caf39c66-102b-42c1-baf2-777a49886ce4",
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {
@@ -839,7 +692,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.1"
+   "version": "3.11.2"
   },
   "vscode": {
    "interpreter": {