python type_error ai_generated true

TypeError: 'async with' 从 aenter 收到的对象未实现 await：Timeout

TypeError: 'async with' received an object from __aenter__ that does not implement __await__: Timeout

ID: python/asyncio-timeout-context-manager-not-async

其他格式: JSON · Markdown 中文 · English

80%修复率

85%置信度

0证据数

2024-11-15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 asyncio.timeout 仅作为普通上下文管理器存在的 Python 版本上使用 async with asyncio.timeout()（或在根本不支持它的旧版本上），或返回了自定义 Timeout 对象而非协程。

English

Code uses async with asyncio.timeout() on a Python version where asyncio.timeout exists only as a plain context manager (or on an older version where it does not exist at all), or a custom Timeout object is returned instead of a coroutine.

generic

解决方案

92% 成功率

try:
    result = await asyncio.wait_for(coro(), timeout=5.0)
except asyncio.TimeoutError:
    result = None

88% 成功率

async with asyncio.timeout(5.0):
    await coro()
# note: 'async with', but NOT 'async with await'

无效尝试

常见但无效的做法:

90% 失败
asyncio.timeout is not a coroutine; awaiting it raises TypeError.
80% 失败
Does not actually cancel the inner coroutine, so the timeout never triggers.