python runtime_error ai_generated true

asyncio.exceptions.TimeoutError: Queue get timed out

ID: python/asyncio-queue-get-timeout

Also available as: JSON · Markdown · 中文
80%Fix Rate
84%Confidence
0Evidence
2025-04-12First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.9 active — — —
3.10 active — — —

Root Cause

An asyncio.Queue.get() call with a timeout did not receive an item within the specified time.

generic

中文

带超时的 asyncio.Queue.get() 调用在指定时间内未收到项目。

Workarounds

  1. 90% success Use asyncio.wait_for() with a reasonable timeout and handle timeout gracefully 
    try:
    item = await asyncio.wait_for(queue.get(), timeout=5.0)
except asyncio.TimeoutError:
    item = None  # or handle differently
  2. 80% success Use queue.get_nowait() in a loop with sleep 
    while True:
    try:
        item = queue.get_nowait()
        break
    except asyncio.QueueEmpty:
        await asyncio.sleep(0.1)

Dead Ends

Common approaches that don't work:

  1. Using a very large timeout to avoid the error 30% fail

    This may cause the application to hang if items are never produced.

  2. Polling the queue with qsize() before get() 60% fail

    qsize() is not reliable in concurrent scenarios due to race conditions.