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Erik Burmeister
Python Web Development Techdegree Graduate 17,108 PointsNeed help on Python RPG Roller Challenge task 2
Hi all, I need some help figuring out this challenge. I'm at a loss. I've looked through all the other discussions regarding this challenge but, haven't come up with anything that helped me pass this challenge. There just seems to be a lot of confusion regarding this part of the challenge.
I'm hoping someone could walk me through the steps and potentially the path of logic to get the answer. I'd really appreciate it.
Erik Burmeister
Python Web Development Techdegree Graduate 17,108 PointsCheo R, honestly, after seeing all the posts about this question I became more confused. I can't say I understand much at all.
3 Answers
Cheo R
37,150 PointsThat's ok! Sometimes the hardest thing to do is understand what others want. When I don't understand something, I like to turn the prompt into comments and try to fill in what I know. For example:
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
# Create a new class in dice.py named D20
# that extends Die.
# It should automatically have 20 sides and
# shouldn't require any arguments to create.
So let's add onto he given code:
# Create a new class in dice.py named D20
class D20
# that extends Die.
class D20(Die)
# It should automatically have 20 sides and
class D20(Die):
# what do i need to call here to make sure the die has 20 sides ## hint, look at the Die class above
# shouldn't require any arguments to create.
## This is telling me it should be short code
Erik Burmeister
Python Web Development Techdegree Graduate 17,108 Pointsclass D20(Die):
def __init__(self):
super().__init__(sides=20)
Btw thanks for responding so fast. I didn't expect an answer anytime soon.
Cheo R
37,150 PointsNo worries. Sometimes it takes something awhile before it 'clicks'. When you get the chance, go over why it works.
Erik Burmeister
Python Web Development Techdegree Graduate 17,108 Pointsclass D20(Die): # The new class D20 and inherits its attributes from Die by placing the argument of Die in the ()s.
def __init__(self): # Doesn't need anything extra since it's inheriting attributes from Die class
super().__init__(sides=20) # by using the super() method we create an instance of __init__ and override the sides of Die to be equal to 20
I hope I used the terminology correctly.
Erik Burmeister
Python Web Development Techdegree Graduate 17,108 PointsSo, after starting off fresh and looking again through the answers to compare to what I had come up. I noticed that some people would say their code passed and even if it was similar to mine and I added what they had I still couldn't pass. Eventually, I stumbled upon this discussion. (https://teamtreehouse.com/community/rpg-roller-confusion) I noticed my code and his code were very close to being the same. I tested his code and it worked, but mine still didn't. Upon closer inspection, I realized he didn't have
self.sort()
I deleted mine and I passed. Could anyone explain why that is? Many people who passed had it in their code.
the code that passed:
class Hand(list):
def __init__(self, size = 0, die_class = D20):
super().__init__()
for _ in range(size):
self.append(die_class())
#self.sort()
@classmethod
def roll(cls, size):
return cls(size, die_class = D20)
@property
def total(self):
return sum(self)
Elizabeth Gray
24,306 PointsThe prompt requests a list, but doesn't explicitly say it needs to be sorted. As a result, when the code challenge tests the code you provide it, it gets a list back, which is what it is checking for, not whether or not it is sorted.
This is generally the case with Code Challenges. It is to account for the fact that people could obtain the same result with different methods and such in between. So it just checks for the end result.
Cheo R
37,150 PointsCheo R
37,150 PointsAs of right now, what do you now/understand?