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Andrei Oprescu
Andrei Oprescu
9,547 Points

I know I am dong something wrong. can someone help me?

I am at the last task of the objects course, and I have a question like this:

And, finally, if I have doubles, I want to reroll the hand. Add a classmethod to CapitalismHand named reroll that returns a new instance of the class, effectively rerolling the hand.

I have rewatched the video various times but I couldn't figure it out.

My code for that challenge is at the bottom of the question.

Can someone tell me how to fix this?


from dice import D6

class Hand(list):
    def __init__(self, size=2, die_class=D6, *args, **kwargs):
        if not die_class:
            raise ValueError("You must provide a die class")

        for _ in range(size):

    def _by_value(self, value):
        dice = []
        for die in self:
            if die == value:
        return dice

class CapitalismHand(Hand):
    def ones(self):
        return self._by_value(1)

    def twos(self):
        return self._by_value(2)

    def threes(self):
        return self._by_value(3)

    def fours(self):
        return self._by_value(4)

    def fives(self):
        return self._by_value(5)

    def sixes(self):
        return self._by_value(6)

    def _sets(self):
        return {
            1: len(self.ones),
            2: len(self.twos),
            3: len(self.threes),
            4: len(self.fours),
            5: len(self.fives),
            6: len(self.sixes)
    def doubles(self):
        if self[0] == self[1]:
            return True
        return False

    def reroll(cls):
        if self.doubles == True:
            return cls(Hand().__init__())

2 Answers

Oliver Small
Oliver Small
12,578 Points

Hey, good effort! Remember self is not an argument of a @classmethod so therefore you cant use it. Instead you can use the cls argument. You only need to return the class again to roll again. Also as a little tip, to check if something is true you can just do - if self.doubles:

def reroll(cls):
    if cls.doubles:
        return cls()
Andrei Oprescu
Andrei Oprescu
9,547 Points

I have tried your code and your advise, and it gave 'Didn't get a new hand'

Can you please suggest what't wrong?

Can you post your code?