Cant remember how to create class method

Question

Cant remember how to create class method, probably amongst other problems. Need some clues on what to do.

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, num):
        for _ in num:
            yield cls().append(D20)

Answer 1 · 2022-01-18T00:32:45Z

January 18, 2022 12:32am

You're creating a classmethod correctly, but you're overlooking some of the hints given about adding it and what it should do. In particular you forgot to:

import the D20 class from dice.py
create a new instance of the Hand class and assign it to a variable
append all the D20's to your Hand first, and then return the Hand of D20s (you won't need yield)

Also:

remember to include parentheses when creating a new instance of a D20()
remember that "num" is not an iterable that can control a loop (but you could use it in a range)

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Andy McDonald

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Cant remember how to create class method

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Steven Parker

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Andy McDonald

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