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Ron Tovbin
Python Web Development Techdegree Student 6,268 PointsNot sure why this is not working. Thanks in advance.
thanks.
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)
from dice import D20
class Hand(list):
def __init__(self):
super().__init__()
def roll(self,numrolls):
for _ in range(numrolls):
self.append(D20())
@property
def length(self):
return len(self)
@property
def total(self):
return sum(self)
2 Answers
Chris Freeman
Treehouse Moderator 68,441 PointsYou are on the right path. One hint is in how the method will be called. By using Hand.roll(2), "Hand" is capitalized, implying this will be a classmethod and not an standard instance method.
In a classmethod, the self, in this case, would be the actual class Hand, enabling an instance to be generated using self() which will create a new base instance. Use append as you have to add each D20 to the new instance. Finally return this new instance. A return is needed to send back the newly created instance.
Also note, typically in a classmethod, "cls" is used instead of "self" to represent the class involved instead of the instance of the class.
Post back if you need more help. Good luck!!
Ron Tovbin
Python Web Development Techdegree Student 6,268 PointsThat helped a lot. so thank you. getting there but still stuck.
class Hand(list):
def __init__(self):
super().__init__()
@property
def total(self):
return sum(self)
@classmethod
def roll(cls, numrolls=2):
hand = cls()
for _ in numrolls:
hand.append(D20())
return hand
@property
def length(self):
return len(self)
Chris Freeman
Treehouse Moderator 68,441 PointsThe range was dropped from the for loop. Also the length property seems to mess up the checker. Removing it pass the challenge.