python runtime_error ai_generated true

RuntimeError: 无法从正在运行的事件循环中调用 asyncio.run()

RuntimeError: asyncio.run() cannot be called from a running event loop

ID: python/asyncio-loop-already-running-jupyter

其他格式: JSON · Markdown 中文 · English
80%修复率
89%置信度
0证据数
2024-01-15首次发现

版本兼容性

版本状态引入弃用备注
3.8+ active — — —
3.9+ active — — —
3.10+ active — — —
3.11+ active — — —
3.12+ active — — —

根因分析

在已运行的事件循环内部调用了 asyncio.run()，常见于 Jupyter notebook、IPython 或异步框架中。

English

asyncio.run() was called from inside an already-running loop, common in Jupyter notebooks, IPython, or async frameworks.

generic

解决方案

  1. 97% 成功率 
    # In a Jupyter cell:
await main()
# Do NOT use asyncio.run() in Jupyter
  2. 95% 成功率 
    task = asyncio.create_task(main())
await task

无效尝试

常见但无效的做法:

  1. 55% 失败

    Nest_asyncio patches the loop but breaks some libraries and can deadlock; often produces subtle bugs.

  2. 90% 失败

    Raises the same error because the loop is already running.