langchain/docs/examples/agents/mrkl.ipynb

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  {
   "cell_type": "markdown",
   "id": "f1390152",
   "metadata": {},
   "source": [
    "# MRKL\n",
    "\n",
    "This notebook showcases using an agent to replicate the MRKL chain."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "39ea3638",
   "metadata": {},
   "source": [
    "This uses the example Chinook database.\n",
    "To set it up follow the instructions on https://database.guide/2-sample-databases-sqlite/, placing the `.db` file in a notebooks folder at the root of this repository."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "ac561cc4",
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain import LLMMathChain, OpenAI, SerpAPIChain, SQLDatabase, SQLDatabaseChain\n",
    "from langchain.agents import initialize_agent, Tool"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "07e96d99",
   "metadata": {},
   "outputs": [],
   "source": [
    "llm = OpenAI(temperature=0)\n",
    "search = SerpAPIChain()\n",
    "llm_math_chain = LLMMathChain(llm=llm, verbose=True)\n",
    "db = SQLDatabase.from_uri(\"sqlite:///../../../notebooks/Chinook.db\")\n",
    "db_chain = SQLDatabaseChain(llm=llm, database=db, verbose=True)\n",
    "tools = [\n",
    "    Tool(\n",
    "        name = \"Search\",\n",
    "        func=search.run,\n",
    "        description=\"useful for when you need to answer questions about current events\"\n",
    "    ),\n",
    "    Tool(\n",
    "        name=\"Calculator\",\n",
    "        func=llm_math_chain.run,\n",
    "        description=\"useful for when you need to answer questions about math\"\n",
    "    ),\n",
    "    Tool(\n",
    "        name=\"FooBar DB\",\n",
    "        func=db_chain.run,\n",
    "        description=\"useful for when you need to answer questions about FooBar. Input should be in the form of a question\"\n",
    "    )\n",
    "]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "a069c4b6",
   "metadata": {},
   "outputs": [],
   "source": [
    "mrkl = initialize_agent(tools, llm, agent=\"zero-shot-react-description\", verbose=True)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "e603cd7d",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "What is the age of Olivia Wilde's boyfriend raised to the 0.23 power?\n",
      "Thought:\u001b[32;1m\u001b[1;3m I need to find the age of Olivia Wilde's boyfriend\n",
      "Action: Search\n",
      "Action Input: \"Olivia Wilde's boyfriend\"\u001b[0m\n",
      "Observation: \u001b[36;1m\u001b[1;3mOlivia Wilde started dating Harry Styles after ending her years-long engagement to Jason Sudeikis — see their relationship timeline.\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I need to find the age of Harry Styles\n",
      "Action: Search\n",
      "Action Input: \"Harry Styles age\"\u001b[0m\n",
      "Observation: \u001b[36;1m\u001b[1;3m28 years\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I need to calculate 28 to the 0.23 power\n",
      "Action: Calculator\n",
      "Action Input: 28^0.23\u001b[0m\n",
      "\n",
      "\u001b[1m> Entering new chain...\u001b[0m\n",
      "28^0.23\u001b[32;1m\u001b[1;3m\n",
      "\n",
      "```python\n",
      "print(28**0.23)\n",
      "```\n",
      "\u001b[0m\n",
      "Answer: \u001b[33;1m\u001b[1;3m2.1520202182226886\n",
      "\u001b[0m\n",
      "\u001b[1m> Finished chain.\u001b[0m\n",
      "\n",
      "Observation: \u001b[33;1m\u001b[1;3mAnswer: 2.1520202182226886\n",
      "\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I now know the final answer\n",
      "Final Answer: 2.1520202182226886\u001b[0m"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'2.1520202182226886'"
      ]
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     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
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   ],
   "source": [
    "mrkl.run(\"What is the age of Olivia Wilde's boyfriend raised to the 0.23 power?\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "a5c07010",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Who recently released an album called 'The Storm Before the Calm' and are they in the FooBar database? If so, what albums of theirs are in the FooBar database?\n",
      "Thought:\u001b[32;1m\u001b[1;3m I need to find an album called 'The Storm Before the Calm'\n",
      "Action: Search\n",
      "Action Input: \"The Storm Before the Calm album\"\u001b[0m\n",
      "Observation: \u001b[36;1m\u001b[1;3mThe Storm Before the Calm (stylized in all lowercase) is the tenth (and eighth international) studio album by Canadian-American singer-songwriter Alanis ...\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I need to check if Alanis is in the FooBar database\n",
      "Action: FooBar DB\n",
      "Action Input: \"Does Alanis Morissette exist in the FooBar database?\"\u001b[0m\n",
      "\n",
      "\u001b[1m> Entering new chain...\u001b[0m\n",
      "Does Alanis Morissette exist in the FooBar database?\n",
      "SQLQuery:\u001b[32;1m\u001b[1;3m SELECT * FROM Artist WHERE Name = 'Alanis Morissette'\u001b[0m\n",
      "SQLResult: \u001b[33;1m\u001b[1;3m[(4, 'Alanis Morissette')]\u001b[0m\n",
      "Answer:\u001b[32;1m\u001b[1;3m Yes\u001b[0m\n",
      "\u001b[1m> Finished chain.\u001b[0m\n",
      "\n",
      "Observation: \u001b[38;5;200m\u001b[1;3m Yes\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I need to find out what albums of Alanis's are in the FooBar database\n",
      "Action: FooBar DB\n",
      "Action Input: \"What albums by Alanis Morissette are in the FooBar database?\"\u001b[0m\n",
      "\n",
      "\u001b[1m> Entering new chain...\u001b[0m\n",
      "What albums by Alanis Morissette are in the FooBar database?\n",
      "SQLQuery:\u001b[32;1m\u001b[1;3m SELECT Album.Title FROM Album JOIN Artist ON Album.ArtistId = Artist.ArtistId WHERE Artist.Name = 'Alanis Morissette'\u001b[0m\n",
      "SQLResult: \u001b[33;1m\u001b[1;3m[('Jagged Little Pill',)]\u001b[0m\n",
      "Answer:\u001b[32;1m\u001b[1;3m Jagged Little Pill\u001b[0m\n",
      "\u001b[1m> Finished chain.\u001b[0m\n",
      "\n",
      "Observation: \u001b[38;5;200m\u001b[1;3m Jagged Little Pill\u001b[0m\n",
      "Thought:\u001b[32;1m\u001b[1;3m I now know the final answer\n",
      "Final Answer: The album is by Alanis Morissette and the albums in the FooBar database by her are Jagged Little Pill\u001b[0m"
     ]
    },
    {
     "data": {
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       "'The album is by Alanis Morissette and the albums in the FooBar database by her are Jagged Little Pill'"
      ]
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     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "mrkl.run(\"Who recently released an album called 'The Storm Before the Calm' and are they in the FooBar database? If so, what albums of theirs are in the FooBar database?\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "d7c2e6ac",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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