import asyncio


def test():
    raise ValueError('123')


async def main():
    await asyncio.sleep(0)

    def test_wrapper():
        try:
            test()
        except ValueError as e:
            print(repr(e))

    loop = asyncio.get_event_loop()
    loop.call_soon_threadsafe(test_wrapper)


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())