class Bot1(object):

    async def step01(self):
        print('step-01')
        await asyncio.sleep(0.6)

    async def step02(self):
        print('step-02')
        await asyncio.sleep(0.6)

    async def step03(self):
        print('step-03')
        await asyncio.sleep(0.6)

    async def __call__(self, *args, **kwargs):
        await self.step01()
        await self.step02()
        await self.step03()