def to_asyncio_in_thread(func):
    async def wrapper(*args, **kwargs):
        return await asyncio.get_event_loop().run_in_executor(None, lambda: func(*args, **kwargs))

    return wrapper


 # Usage: 
  
@to_asyncio_in_thread
def blocking_call():
    print('start wait')
    sleep(10)


async def main():
    await asyncio.gather(*[
        asyncio.create_task(blocking_call()),
        asyncio.create_task(blocking_call()),
        asyncio.create_task(blocking_call())
    ])

asyncio.run(main())