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Python Object-Oriented Python Dice Roller RPG Roller

Stuck in hands.py code challenge, everything seems in order

Really don't get why hands.py is not working, code is quite straightforward: @classmethod returns an instance with the D20s inside and .total returns an int with the sum, what am I missing?

dice.py
import random

class Die:
    def __init__(self, sides=2):
        if sides < 2:
            raise ValueError("Can't have fewer than two sides")
        self.sides = sides
        self.value = random.randint(1, sides)
    def __int__(self):
        return self.value
    def __add__(self, other):
        return int(self) + other
    def __radd__(self, other):
        return self + other

class D20(Die):
    def __init__(self):
        super().__init__(sides = 20)
hands.py
class Hand(list):
    def __init__(self, lst = []):
        self.extend(lst)
    @classmethod
    def roll(cls, times):
        lst = []
        for _ in range(times):
            lst.append(D20())
        return cls(lst)
    @property
    def total(self):
        sum = 0
        for d in self:
            sum += d
        return sum

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points

You are very close. In hand.py, you need to from dice import D20 so "D20()" is defined.

Also, you didn't need to change the total method. The __add__ and __int__ methods inherited from Die will resolve correctly in the sum() function. However, your explicit summing of the D20 objects works, too!

Post back if you have more questions. Good Luck!