为什么像下面的示例一样包装异步生成器时 asyncio.timeout 不起作用？async def generate_many_numbers(): for i in range(1000000000): Yield iasync def main2(): async

为什么像下面的例子一样包装异步生成器时 asyncio.timeout 不起作用？

async def generate_many_numbers():
    for i in range(1000000000):
        yield i

async def main2():
    async with asyncio.timeout(1):
        async for number in generate_many_numbers():
            print(number)

asyncio.run(main2())

这是否是这里描述的同一个问题？ https://peps.python.org/pep-0789/

我注意到添加异步虚拟睡眠有帮助......

async def generate_many_numbers():
    for i in range(1000000000):
        await asyncio.sleep(0)
        yield i

async def iterate_through_numbers():
    async for number in generate_many_numbers():
        print(number)

async def main2():
    async with asyncio.timeout(1):
        async for number in generate_many_numbers():
            print(number)

async def main3():
    try:
        await asyncio.wait_for(iterate_through_numbers(), timeout=1)
    except asyncio.TimeoutError:
        print("The task timed out!")