python runtime_error ai_generated true

RuntimeError: cannot reuse already awaited coroutine

ID: python/asyncio-run-coroutine-twice

Also available as: JSON · Markdown · 中文
80%Fix Rate
90%Confidence
0Evidence
2024-12-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.7 active — — —
3.8 active — — —

Root Cause

Attempting to await the same coroutine object more than once, which is not allowed in asyncio.

generic

中文

尝试多次等待同一个协程对象，这在asyncio中是不允许的。

Workarounds

  1. 100% success 
    async def my_coro(): pass; await my_coro(); await my_coro()
  2. 95% success 
    task = asyncio.create_task(my_coro()); await task; task2 = asyncio.create_task(my_coro()); await task2

Dead Ends

Common approaches that don't work:

  1. 100% fail

    The coroutine is already exhausted; you must create a new coroutine.

  2. 90% fail

    Coroutines are not meant to be manually driven; it's complex and error-prone.