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Python Object-Oriented Python Dice Roller RPG Roller

David Hernandez
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David Hernandez
Python Development Techdegree Graduate 10,694 Points

Some of this instructions are confusing.

trying to figure out how to complete this one but I'm not understanding something it's asking.

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):
    @property
    def total(self):
        return sum(self)

    @classmethod
    def roll(cls, number_of_dice):
        hand = Hand()

        for _ in number_of_dice:
            hand.append(cls)
        return hand

1 Answer

Steven Parker
Steven Parker
218,692 Points

Try taking the instructions one step at a time, you already have several done:

  • In the hands.py file, import the D20 class from dice.py :point_left: you forgot this one
  • Create a classmethod named roll :white_check_mark: you got this one
  • Since it is a classmethod, it will take cls as an argument :white_check_mark:
  • It will also take the number of dice as an argument :white_check_mark:
  • create a new instance of the Hand class and assign it to a variable :white_check_mark:
  • Append a D20 to your Hand equal to the number of dice given as an argument to the roll classmethod :point_left:
  • Then return the Hand of D20s :point_left:

The part about "equal to the number of dice" can be done using a loop, appending as many times as the number given. Other than that, just do the include and return and you'll have it.