Б
@dp.message_handler(Command('test'))
async def text(message: types.Message):
args = message.get_args()
if not args:
print("no args!")
return
if args == 'a':
print(await periodic())
elif args == 'b':
print('da')
async def periodic():
for i in range(99999):
pass
return 12
Все работает