{
 "cells": [
  {
   "metadata": {},
   "cell_type": "markdown",
   "source": "# Crawl4AI",
   "id": "15b6b10304dc52ed"
  },
  {
   "cell_type": "code",
   "id": "initial_id",
   "metadata": {
    "collapsed": true,
    "ExecuteTime": {
     "end_time": "2025-07-10T01:25:20.945463Z",
     "start_time": "2025-07-10T01:25:18.137803Z"
    }
   },
   "source": [
    "import asyncio\n",
    "from crawl4ai import AsyncWebCrawler\n",
    "async def main():\n",
    "    async with AsyncWebCrawler() as crawler:\n",
    "        result = await crawler.arun(\"https://example.com\")\n",
    "        print(result.markdown[:300])  # 打印前 300 个字符\n",
    "if __name__ == \"__main__\":\n",
    "    asyncio.run(main())"
   ],
   "outputs": [
    {
     "ename": "RuntimeError",
     "evalue": "asyncio.run() cannot be called from a running event loop",
     "output_type": "error",
     "traceback": [
      "\u001B[1;31m---------------------------------------------------------------------------\u001B[0m",
      "\u001B[1;31mRuntimeError\u001B[0m                              Traceback (most recent call last)",
      "Cell \u001B[1;32mIn[1], line 8\u001B[0m\n\u001B[0;32m      6\u001B[0m         \u001B[38;5;28mprint\u001B[39m(result\u001B[38;5;241m.\u001B[39mmarkdown[:\u001B[38;5;241m300\u001B[39m])  \u001B[38;5;66;03m# 打印前 300 个字符\u001B[39;00m\n\u001B[0;32m      7\u001B[0m \u001B[38;5;28;01mif\u001B[39;00m \u001B[38;5;18m__name__\u001B[39m \u001B[38;5;241m==\u001B[39m \u001B[38;5;124m\"\u001B[39m\u001B[38;5;124m__main__\u001B[39m\u001B[38;5;124m\"\u001B[39m:\n\u001B[1;32m----> 8\u001B[0m     asyncio\u001B[38;5;241m.\u001B[39mrun(main())\n",
      "File \u001B[1;32mD:\\ProgramTools\\Anaconda\\Lib\\asyncio\\runners.py:190\u001B[0m, in \u001B[0;36mrun\u001B[1;34m(main, debug, loop_factory)\u001B[0m\n\u001B[0;32m    161\u001B[0m \u001B[38;5;250m\u001B[39m\u001B[38;5;124;03m\"\"\"Execute the coroutine and return the result.\u001B[39;00m\n\u001B[0;32m    162\u001B[0m \n\u001B[0;32m    163\u001B[0m \u001B[38;5;124;03mThis function runs the passed coroutine, taking care of\u001B[39;00m\n\u001B[1;32m   (...)\u001B[0m\n\u001B[0;32m    186\u001B[0m \u001B[38;5;124;03m    asyncio.run(main())\u001B[39;00m\n\u001B[0;32m    187\u001B[0m \u001B[38;5;124;03m\"\"\"\u001B[39;00m\n\u001B[0;32m    188\u001B[0m \u001B[38;5;28;01mif\u001B[39;00m events\u001B[38;5;241m.\u001B[39m_get_running_loop() \u001B[38;5;129;01mis\u001B[39;00m \u001B[38;5;129;01mnot\u001B[39;00m \u001B[38;5;28;01mNone\u001B[39;00m:\n\u001B[0;32m    189\u001B[0m     \u001B[38;5;66;03m# fail fast with short traceback\u001B[39;00m\n\u001B[1;32m--> 190\u001B[0m     \u001B[38;5;28;01mraise\u001B[39;00m \u001B[38;5;167;01mRuntimeError\u001B[39;00m(\n\u001B[0;32m    191\u001B[0m         \u001B[38;5;124m\"\u001B[39m\u001B[38;5;124masyncio.run() cannot be called from a running event loop\u001B[39m\u001B[38;5;124m\"\u001B[39m)\n\u001B[0;32m    193\u001B[0m \u001B[38;5;28;01mwith\u001B[39;00m Runner(debug\u001B[38;5;241m=\u001B[39mdebug, loop_factory\u001B[38;5;241m=\u001B[39mloop_factory) \u001B[38;5;28;01mas\u001B[39;00m runner:\n\u001B[0;32m    194\u001B[0m     \u001B[38;5;28;01mreturn\u001B[39;00m runner\u001B[38;5;241m.\u001B[39mrun(main)\n",
      "\u001B[1;31mRuntimeError\u001B[0m: asyncio.run() cannot be called from a running event loop"
     ]
    }
   ],
   "execution_count": 1
  }
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