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I passed, but i'm not sure what my code is actually doing...

What is my reroll code actually doing?

I tried calling reroll via CapitalismHand.reroll(), CapitalismHand(), assigning CapitalismHand() to an instance, and other ways to seeing what the reroll method is actually doing in my code but I'm still getting doubles with every method. Isn't this reroll code supposed to reroll automatically if the class returns a double? Am I missing something?

How can I test the code to see whether the class rerolled itself or not?

from dice import D6

class Hand(list):
    def __init__(self, size=0, die_class=None, *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 __init__(self):
        super().__init__(size = 2, die_class = D6)

    def reroll(cls):
        if cls.doubles:
            return cls()

    def doubles(self):
        truthy = []
        for x in range(1,7):
            if len(self._by_value(x)) == 2:
        return True in truthy

    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)

1 Answer

Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

The challenge asks only for a reroll method that return a new instance. The verbiage about why one might use the reroll method due to doubles is not relevant to the code needed to solve the challenge. As for you code, it works but not for the reasons you think:

    def reroll(cls):  # define a classmethod (here, 'cls' will always point to the current class CapitalismHand
        if cls.doubles:  # without parens, this says if the method object CapitalismHand.doubles exist. This is *always* True.
            return cls()  # return new instance.

So the if statement can be removed and still pass.