如何通过aiter()和anext()内置使用异步迭代器

import asyncio

async def async_generator():
    for i in range(5):
        await asyncio.sleep(1)
        yield i

from contextlib import asynccontextmanager

@asynccontextmanager
async def get_async_iterator():
    async for value in async_generator():
        yield value

async def main():
    async with get_async_iterator() as async_iter:
        try:
            while True:
                value = await anext(async_iter)
                print(value)
        except StopAsyncIteration:
            pass

if __name__ == "__main__":
    asyncio.run(main())