Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python

Posted by Stheven Cabral
.a{fill-rule:evenodd;}techdegree seal-36
Stheven Cabral
Full Stack JavaScript Techdegree Graduate 29,854 Points

Help with OOP challenge: doubles

Hi Everyone,

I am having trouble with this coding challenge. The question is: Alright! Now I need you to add a new property called doubles. It should return True if both of the dice have the same value. Otherwise, return False.

Could someone help me with my new property?

Thank You

hands.py 
from dice import D6


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

        for _ in range(size):
            self.append(D6())
        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 doubles(self):
        num = self[0]
        if sum(self) == (num*2):
            return 'True'
        else:
            return 'False'

    @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)
        }

1 Answer

Steven Parker
Steven Parker
243,199 Points
Steven Parker
Steven Parker
243,199 Points

Here's a few hints:

  • when used as Boolean values, True and False should not have quotes around them
  • the calculation can be simplified by just comparing the first two items
  • you can simplify the code further by directly returning the result of the comparison

Also, while it gave you credit for task 1, you should really not modify "Hand" at all. Instead, build an override for __init__ in "CapitalismHand".