It's undeniable.

back_at_one.py

class BackAtOne(object):

    @classmethod
    def step_1(cls):
        return "You're like a dream come true"

    @classmethod
    def step_2(cls):
        return "Just want to be with you"

    @classmethod
    def step_3(cls):
        return "Girl, it's plain to see that you're the only one for me"

    @classmethod
    def step_4(cls):
        cls.step_1()
        cls.step_2()
        cls.step_3()
        return "Repeat steps 1 through 3"

    @classmethod
    def step_5(cls):
        return "Make you fall in love with me"

    @classmethod
    def if_ever_i_believe_my_work_is_done(cls, start_back_at):
        print(f"If ever I believe my work is done, I start back at {start_back_at}\n")
        cls.execute_steps(start_back_at=start_back_at)

    @classmethod
    def execute_steps(cls, start_back_at=1):
        for i in range(start_back_at, 6):
            print(f"{i}: " + getattr(cls, f"step_{i}")())
        cls.if_ever_i_believe_my_work_is_done(start_back_at)

try:
    BackAtOne.execute_steps(start_back_at=1)
except RecursionError:
    print("And I start back at 1...")