feat: 2525 neo4j init graph notebooks

LangChain/LangChain_Import_Cypher_Query_and_Use_GraphCypherQAChain.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "d57803c7-fcf3-4521-8073-d246ba9206f3",
+   "metadata": {
+    "execution": {
+     "iopub.execute_input": "2021-02-23T14:22:16.610471Z",
+     "iopub.status.busy": "2021-02-23T14:22:16.610129Z",
+     "iopub.status.idle": "2021-02-23T14:22:16.627784Z",
+     "shell.execute_reply": "2021-02-23T14:22:16.626866Z",
+     "shell.execute_reply.started": "2021-02-23T14:22:16.610384Z"
+    },
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "<img width=\"8%\" alt=\"LangChain.png\" src=\"https://raw.githubusercontent.com/jupyter-naas/awesome-notebooks/master/.github/assets/logos/LangChain.png\" style=\"border-radius: 15%\">"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "bafb077c",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "# LangChain - Import Cypher Query and Use GraphCypherQAChain"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "cb407ea8",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "**Tags:** #langchain #neo4j #cypher #txt #snippet"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "3fa65002",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "**Author:** [Florent Ravenel](https://www.linkedin.com/in/florent-ravenel)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "c7851585",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "**Last update:** 2024-05-22 (Created: 2024-05-22)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "188a2da0",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "**Description:** This notebook imports a Cypher query into Neo4j and asks a question using GraphCypherQAChain."
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "498e71dd",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "## Input"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "d2366b9a",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "### Import libraries"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "61e8eabc-4c9f-4314-bc1e-3c09b4c3266c",
+   "metadata": {
+    "tags": []
+   },
+   "outputs": [],
+   "source": [
+    "try:\n",
+    "    from langchain.graphs import Neo4jGraph\n",
+    "    from langchain.chains import GraphCypherQAChain\n",
+    "except:\n",
+    "    !pip install langchain==0.1.13 --user\n",
+    "    from langchain.graphs import Neo4jGraph\n",
+    "    from langchain.chains import GraphCypherQAChain\n",
+    "try:\n",
+    "    from langchain_openai import ChatOpenAI\n",
+    "except:\n",
+    "    !pip install langchain-openai=0.1.1 --user\n",
+    "    from langchain_openai import ChatOpenAI\n",
+    "import requests\n",
+    "import os"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "4acf67a5",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "### Setup variables\n",
+    "- `url`: URL to connect to the Neo4j database\n",
+    "- `user`: Username for the Neo4j database\n",
+    "- `password`: Password for the Neo4j database\n",
+    "- `os.environ['OPENAI_API_KEY']`: Environment variable for the OpenAI API key\n",
+    "- `graph_source_url`: URL to the json file containing the graph database structure\n",
+    "- `question`: The query question to be asked in the Cypher language"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "e98a53eb",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "outputs": [],
+   "source": [
+    "url = \"bolt://localhost:7687\"\n",
+    "user = \"neo4j\"\n",
+    "password = \"password\"\n",
+    "os.environ['OPENAI_API_KEY'] = \"YOUR_OPENAI_API_KEY\"\n",
+    "graph_source_url = \"https://gist.githubusercontent.com/tomasonjo/08dc8ba0e19d592c4c3cde40dd6abcc3/raw/e90b0c9386bf8be15b199e8ac8f83fc265a2ac57/microservices.json\"\n",
+    "question = \"How will recommendation service be updated?\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "f91368ae",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "## Model"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "34fbede8-2b03-41ae-8b5b-0c011aa390f0",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "### Get graph dataset"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "78e78369-2cf4-4798-85bf-3dd609f54314",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "outputs": [],
+   "source": [
+    "import_query = requests.get(graph_source_url).json().get('query')\n",
+    "import_query"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "46939e8a-fe8d-4a85-b4dc-9b9bdf35d180",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "### Import graph into Neo4j"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "24da5209-79f5-4341-8bd5-5b6da47a5a87",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "outputs": [],
+   "source": [
+    "graph = Neo4jGraph(\n",
+    "    url=url, \n",
+    "    username=username, \n",
+    "    password=password\n",
+    ")\n",
+    "graph.query(\n",
+    "    import_query\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "5bc82b85-83b0-4fda-b9e6-d23ddd64d834",
+   "metadata": {},
+   "source": [
+    "## Output"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "8bd9b44c-bc05-442c-803f-f4ff74e18717",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "source": [
+    "### GraphCypherQAChain"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "42800eeb-c86b-4484-9147-ac9244f879cd",
+   "metadata": {
+    "papermill": {},
+    "tags": []
+   },
+   "outputs": [],
+   "source": [
+    "graph.refresh_schema()\n",
+    "\n",
+    "cypher_chain = GraphCypherQAChain.from_llm(\n",
+    "    cypher_llm=ChatOpenAI(temperature=0, model_name='gpt-4'),\n",
+    "    qa_llm=ChatOpenAI(temperature=0), graph=graph, verbose=True,\n",
+    ")\n",
+    "\n",
+    "cypher_chain.invoke(\n",
+    "    question\n",
+    ")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "a7ca70c6-7329-4020-aaa3-26a76524746d",
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
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+   "file_extension": ".py",
+   "mimetype": "text/x-python",
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+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.6"
+  },
+  "naas": {
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+   "notebook_path": "LangChain/LangChain_Create_Agent.ipynb"
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+}