import asyncio
import abc
import contextlib
from typing import AsyncIterator


class Test(abc.ABC):
    @abc.abstractmethod
    async def request(self) -> AsyncIterator:
        pass


class SubTest(Test):
    @contextlib.asynccontextmanager
    async def request(self) -> AsyncIterator:
        await asyncio.sleep(1)
        yield 1
        await asyncio.sleep(1)


async def main():
    obj = SubTest()
    async with obj.request() as res:
        print(res)


asyncio.run(main())