def execute(bot,distance):

class SpecialOrder(Order, metaclass=ABCMeta):
    """All special orders inherit from this order."""

    @classmethod
    def execute(cls, bot):
        raise NotImplementedError()


class Forward(Order):
    forward_constant = 1

    @classmethod
    def execute(cls, bot):
        bot.move_forward(cls.forward_constant)


class ForwardTwice(Forward):
    forward_constant = 2


class Rotate(Order):
    rotate_constant = 1

    @classmethod
    def execute(cls, bot):
        bot.rotate(cls.rotate_constant)