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Python Object-Oriented Python Dice Roller RPG Roller

Bummer! Can't get the length of a `Hand`

Have been stuck on this code challenge for ages and really can't see what is wrong :( Can somebody please point out the error in my ways!

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__(20)
hands.py
import dice

class Hand(list):
    def __init__(self, hand_list):
        super().__init__()
        self.append(hand_list)

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

    @classmethod
    def roll(cls, num):
        hand = []
        for _ in range(num):
            hand.append(dice.D20())
        cls(hand)

2 Answers

Steven Parker
Steven Parker
231,236 Points

It looks like you've redefined Hand so that it now requires an argument to create a new instance. The challenge will expect it to work as it did before, but to also have the new roll method.

Also, remember that roll must return the new instance.

Thanks!