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Python

Leo Marco Corpuz
Leo Marco Corpuz
18,975 Points

Capitalism game 3

This part sounds easy but can anyone point out what I’m missing? Thanks!

hands.py
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")
        super().__init__()

        for _ in range(size):
            self.append(die_class())
        self.sort()

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


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

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

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

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

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

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

    @property
    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)
        }
    @property
    def doubles(self):
       return self[0]==self[1]

    @classmethod
    def reroll(cls):
        if self[0]==self[1]:
            return cls(self)

2 Answers

you are doing great, The reroll method should just return a new instance of the CapitalismHand class.. that's it..

@classmethod
    def reroll(cls):
        return cls()
Vitaliy Biriukov
Vitaliy Biriukov
14,172 Points

I don't get it much. we're not specifying the class here. How would the programm know that 'cls' is self?

Leo Marco Corpuz
Leo Marco Corpuz
18,975 Points

I’m not sure. I did this challenge a while back so I can’t remember. But my best guess is that cls() refers to the Hand class itself. The code is returning a new instance of the Hand class.

Jiawei Hu
Jiawei Hu
9,740 Points

cls refers to the class that the class method belongs to, which is CapitalismHand in this case.