PasswordBot

class PasswordBot:
    def __init__(self, round=0):
        self.turn = 0
        self.nice = True
    def move(self, previous=None):
        self.turn+=1
        if self.turn <= 3 and previous == 3:
            self.nice = False
        if self.turn >= 3 and self.nice:
            if self.nice:
                return 2
            else:
                return previous
        else:
            return 3