class GoalOnes:
    "One point for each one"

    def prompt(self, dice):
        potential_score = self.score(dice)
        return f"Ones ({potential_score})"

    def score(self, dice):
        total = 0
        for die in dice:
            if die.face == 1:
                total += 1
        return total

class GoalTwos:
    "Two points for each two"

    def prompt(self, dice):
        potential_score = self.score(dice)
        return f"Twos ({potential_score})"

    def score(self, dice):
        total = 0
        for die in dice:
            if die.face == 2:
                total += 2
        return total

class GoalThrees:
    "Three points for each three"

    def prompt(self, dice):
        potential_score = self.score(dice)
        return f"Threes ({potential_score})"

    def score(self, dice):
        total = 0
        for die in dice:
            if die.face == 3:
                total += 3
        return total