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Python Object-Oriented Python Dice Roller RPG Roller

Posted by Morningstar Ndlovu
Morningstar Ndlovu
3,732 Points

i need help

Create a new class in dice.py named D20 that extends Die. It should automatically have 20 sides and shouldn't require any arguments to create.

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, sides=20):
        super().__init__(sides)

from dice import D20


class Hand(roll):
    def __init__(self, new_hand):
        super().__init__()
        self.extend(new_hand)

    @classmethod
    def roll(cls, size, die_class=D20):
        new_hand = []
        for _ in range(size):
            new_hand.append(die_class())
        return cls(new_hand)

    @property
    def total(self):
        return sum(self)
hands.py 
class Hand(list):
    @property
    def total(self):
        return sum(self)

1 Answer

Mark Kastelic
Mark Kastelic
8,147 Points
Mark Kastelic
Mark Kastelic
8,147 Points

Hi Morningstar,

Starting with your "from dice import D20," this code should all be in the hands.py file:

from dice import D20

class Hand(list):
    def roll(num_dice):
        hand = Hand()
        for i in range(num_dice):
            die = D20()
            hand.append(die)
        return hand
    @property
    def total(self):
        return sum(self)

I didn't use class methods, but the challenge did say it didn't care about implementation.