{
 "cells": [
  {
   "cell_type": "code",
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   "metadata": {},
   "outputs": [
    {
     "ename": "ValidationError",
     "evalue": "1 validation error for Anthropic\n__root__\n  Did not find anthropic_api_key, please add an environment variable `ANTHROPIC_API_KEY` which contains it, or pass  `anthropic_api_key` as a named parameter. (type=value_error)",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mValidationError\u001b[0m                           Traceback (most recent call last)",
      "Cell \u001b[1;32mIn[1], line 5\u001b[0m\n\u001b[0;32m      2\u001b[0m \u001b[39mfrom\u001b[39;00m \u001b[39mlangchain\u001b[39;00m\u001b[39m.\u001b[39;00m\u001b[39mcallbacks\u001b[39;00m\u001b[39m.\u001b[39;00m\u001b[39mbase\u001b[39;00m \u001b[39mimport\u001b[39;00m CallbackManager\n\u001b[0;32m      3\u001b[0m \u001b[39mfrom\u001b[39;00m \u001b[39mlangchain\u001b[39;00m\u001b[39m.\u001b[39;00m\u001b[39mcallbacks\u001b[39;00m\u001b[39m.\u001b[39;00m\u001b[39mstreaming_stdout\u001b[39;00m \u001b[39mimport\u001b[39;00m StreamingStdOutCallbackHandler\n\u001b[1;32m----> 5\u001b[0m llm \u001b[39m=\u001b[39m Anthropic(streaming\u001b[39m=\u001b[39;49m\u001b[39mTrue\u001b[39;49;00m, callback_manager\u001b[39m=\u001b[39;49mCallbackManager([StreamingStdOutCallbackHandler()]), verbose\u001b[39m=\u001b[39;49m\u001b[39mTrue\u001b[39;49;00m, temperature\u001b[39m=\u001b[39;49m\u001b[39m0\u001b[39;49m)\n\u001b[0;32m      6\u001b[0m llm(\u001b[39m\"\u001b[39m\u001b[39m仿写一份周杰伦的歌词\u001b[39m\u001b[39m\"\u001b[39m)\n",
      "File \u001b[1;32m~\\AppData\\Roaming\\Python\\Python311\\site-packages\\pydantic\\main.py:341\u001b[0m, in \u001b[0;36mpydantic.main.BaseModel.__init__\u001b[1;34m()\u001b[0m\n",
      "\u001b[1;31mValidationError\u001b[0m: 1 validation error for Anthropic\n__root__\n  Did not find anthropic_api_key, please add an environment variable `ANTHROPIC_API_KEY` which contains it, or pass  `anthropic_api_key` as a named parameter. (type=value_error)"
     ]
    }
   ],
   "source": [
    "from langchain import Anthropic\n",
    "from langchain.callbacks.base import CallbackManager\n",
    "from langchain.callbacks.streaming_stdout import StreamingStdOutCallbackHandler\n",
    "\n",
    "llm = Anthropic(streaming=True, callback_manager=CallbackManager([StreamingStdOutCallbackHandler()]), verbose=True, temperature=0)\n",
    "llm(\"仿写一份周杰伦的歌词\")"
   ]
  }
 ],
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