68 lines
3.7 KiB
Plaintext
68 lines
3.7 KiB
Plaintext
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{
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"cells": [
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{
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"metadata": {},
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"cell_type": "markdown",
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"source": "# Crawl4AI",
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"id": "15b6b10304dc52ed"
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},
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{
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"cell_type": "code",
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"id": "initial_id",
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"metadata": {
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"collapsed": true,
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"ExecuteTime": {
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"end_time": "2025-07-10T01:25:20.945463Z",
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"start_time": "2025-07-10T01:25:18.137803Z"
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}
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},
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"source": [
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"import asyncio\n",
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"from crawl4ai import AsyncWebCrawler\n",
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"async def main():\n",
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" async with AsyncWebCrawler() as crawler:\n",
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" result = await crawler.arun(\"https://example.com\")\n",
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" print(result.markdown[:300]) # 打印前 300 个字符\n",
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"if __name__ == \"__main__\":\n",
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" asyncio.run(main())"
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],
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"outputs": [
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{
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"ename": "RuntimeError",
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"evalue": "asyncio.run() cannot be called from a running event loop",
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"output_type": "error",
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"traceback": [
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"\u001B[1;31m---------------------------------------------------------------------------\u001B[0m",
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"\u001B[1;31mRuntimeError\u001B[0m Traceback (most recent call last)",
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"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",
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"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",
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"\u001B[1;31mRuntimeError\u001B[0m: asyncio.run() cannot be called from a running event loop"
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]
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}
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],
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"execution_count": 1
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 2
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython2",
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"version": "2.7.6"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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