import asyncio
import functools
import signal


async def my_task(task_num):
    try:
        while True:
            print(f'Task {task_num}')
            await asyncio.sleep(task_num + 1)
    except asyncio.CancelledError:
        print(f"Task {task_num} was cancelled")


async def main():
    tasks = []

    for i in range(3):
        tasks.append(asyncio.ensure_future(my_task(i)))

    loop = asyncio.get_event_loop()

    def signal_handler(sig):
        print(sig)
        loop.remove_signal_handler(sig)
        for task in tasks:
            task.cancel()

    loop.add_signal_handler(signal.SIGINT, functools.partial(signal_handler, sig=signal.SIGINT))
    loop.add_signal_handler(signal.SIGTERM, functools.partial(signal_handler, sig=signal.SIGTERM))

    await asyncio.gather(*tasks)


asyncio.run(main())