更新python后端

2025-09-18 17:18:18 +08:00
parent 2fc209e6e6
commit de6a350da8
45 changed files with 2524 additions and 89 deletions
@@ -0,0 +1,114 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "id": "d029ad67",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[460823023525530114, 460823023525530115]"
+      ]
+     },
+     "execution_count": 21,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "from langchain_milvus import BM25BuiltInFunction, Milvus\n",
+    "URI = \"http://10.10.10.9:19530\"\n",
+    "tongyiKey = \"sk-9464b2498c184982a9fe9d2c2e725ab5\"\n",
+    "from langchain_community.embeddings import DashScopeEmbeddings\n",
+    "embeddings = DashScopeEmbeddings(\n",
+    "    model=\"text-embedding-v3\",\n",
+    "    dashscope_api_key= tongyiKey, \n",
+    ")\n",
+    "vectorstore = Milvus(\n",
+    "    embedding_function=embeddings,\n",
+    "    connection_args={\"uri\": URI, \"token\": \"root:Milvus\", \"db_name\": \"bbit_ai_lab\"},\n",
+    "    collection_name=\"knowledge\",\n",
+    "    index_params={\"index_type\": \"FLAT\", \"metric_type\": \"L2\"},\n",
+    "    consistency_level=\"Strong\",\n",
+    "    auto_id=True,\n",
+    "\n",
+    "    primary_field = \"id\",\n",
+    "    text_field=\"text\",\n",
+    "    vector_field=\"vector\",\n",
+    "    partition_key_field = \"kn_id\",\n",
+    "    enable_dynamic_field = True,\n",
+    "    drop_old=False,  # set to True if seeking to drop the collection with that name if it exists\n",
+    ")\n",
+    "\n",
+    "from langchain.schema import Document\n",
+    "\n",
+    "docs = [\n",
+    "    Document(\n",
+    "        page_content=\"这是第一条文本\",\n",
+    "        metadata={\n",
+    "            \"kn_id\": \"8ecd1179-4194-4b80-bc39-5addc678df4b\",\n",
+    "            \"is_active\": True,\n",
+    "        }\n",
+    "    ),\n",
+    "    Document(\n",
+    "        page_content=\"这是第二条文本\",\n",
+    "        metadata={\n",
+    "            \"kn_id\": \"8ecd1179-4194-4b80-bc39-5addc678df4b\",\n",
+    "            \"is_active\": True,\n",
+    "        }\n",
+    "    )\n",
+    "]\n",
+    "\n",
+    "vectorstore.add_documents(docs)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "a480053b",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "*这是第一条文本 [{'kn_id': '8ecd1179-4194-4b80-bc39-5addc678df4b', 'id': 460823023525530108, 'is_active': True}]\n",
+      "*这是第一条文本 [{'kn_id': '8ecd1179-4194-4b80-bc39-5addc678df4b', 'id': 460823023525530110, 'is_active': True}]\n"
+     ]
+    }
+   ],
+   "source": [
+    "results = vectorstore.similarity_search(\n",
+    "    \"\",\n",
+    "    k=2,\n",
+    "    expr='kn_id == \"8ecd1179-4194-4b80-bc39-5addc678df4b\"',\n",
+    ")\n",
+    "for res in results:\n",
+    "    print(f\"*{res.page_content} [{res.metadata}]\")"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "lang",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.10.18"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}