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 Object-Oriented Python Dice Roller RPG Roller

Igor Skoldin
Igor Skoldin
6,779 Points

Bummer! Got the wrong length for a `Hand`

This is what I am getting when I run this code in my console:

```hand = Hand.roll(2)

isinstance(hand, Hand)

True

len(hand)

2

hand

[18, 15]

hand.total

33 ```

Everything seems to be working properly accordingly the requirements but I am still getting the error.

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

    def __repr__(self):
        return str(self.value)


class D20(Die):
    def __init__(self):
        super().__init__(sides=20)
hands.py
from dice import D20


class Hand(list):
    def __init__(self, size=0, die_class=None):
        self.size = size
        super().__init__()

        for _ in range(size):
            self.append(die_class())

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

    @classmethod
    def roll(cls, number):
        return cls(size=2, die_class=D20)

1 Answer

Christian Mangeng
Christian Mangeng
15,970 Points

Hi Igor,

it passes if you integrate the number argument:

@classmethod
def roll(cls, number):
    return cls(size=number, die_class=D20)