{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.prompts.example_selector.base import BaseExampleSelector\n",
    "from typing import Dict, List\n",
    "import numpy as np\n",
    "\n",
    "class CustomExampleSelector(BaseExampleSelector):\n",
    "\n",
    "    def __init__(self, examples: List[Dict[str, str]]) -> None:\n",
    "        self.examples = examples\n",
    "\n",
    "    def add_example(self, example: Dict[str, str]):\n",
    "        self.examples.append(example)\n",
    "\n",
    "    def select_examples(self) -> List[dict]:\n",
    "        return np.random.choice(self.examples, size=2, replace=False)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([{'name', '黄奕'}, {'王刚', 'name'}], dtype=object)"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "examples = [\n",
    "    {\"name\", \"李振\"},\n",
    "    {\"name\", \"张三\"},\n",
    "    {\"name\", \"王刚\"},\n",
    "    {\"name\", \"黄奕\"},\n",
    "    {\"name\", \"赵军\"},\n",
    "]\n",
    "\n",
    "example_selector = CustomExampleSelector(examples)\n",
    "\n",
    "example_selector.select_examples()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[{'name', '李振'},\n",
       " {'name', '张三'},\n",
       " {'name', '王刚'},\n",
       " {'name', '黄奕'},\n",
       " {'name', '赵军'},\n",
       " {'name', '秦都'}]"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "example_selector.add_example({\"name\", \"秦都\"})\n",
    "example_selector.examples"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([{'秦都', 'name'}, {'张三', 'name'}], dtype=object)"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "example_selector.select_examples()"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "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": "3.11.3"
  },
  "orig_nbformat": 4
 },
 "nbformat": 4,
 "nbformat_minor": 2
}