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Python Object-Oriented Python Dice Roller RPG Roller

Posted by Robert Peters
Robert Peters
3,728 Points

Stuck on code challenge

Can someone tell me where I'm going wrong here?

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)
hands.py 
from dice import D20

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

    @classmethod
    def roll(cls, number):
        var1 = cls()
        for _ in range(number):
            var1.append(D20)
        return var1

1 Answer

Megan Amendola
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STAFF
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Megan Amendola
Treehouse Teacher
Megan Amendola
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Megan Amendola
Treehouse Teacher

Instead of var1.append(D20), you need to have var1.append(D20()) so you are appending an instance and not the class itself.

Robert Peters
Robert Peters
3,728 Points

That's still not working sorry!

Megan Amendola
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Megan Amendola
Treehouse Teacher
Megan Amendola
.a{fill-rule:evenodd;}techdegree seal-36
Megan Amendola
Treehouse Teacher

Hmm...worked for me. I just copied your same code and made the change. I input:

from dice import D20

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

    @classmethod
    def roll(cls, number):
        var1 = cls()
        for _ in range(number):
            var1.append(D20())
        return var1

Are you getting a bummer error or something else?

Robert Peters
Robert Peters
3,728 Points

Must have been a fault, I reloaded the challenge and it worked. Was just giving the bummer error repeatedly before, cheers!