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Python Object-Oriented Python Dice Roller Boards

Keifer Joedicker
Keifer Joedicker
5,869 Points
Posted by Keifer Joedicker
Keifer Joedicker
5,869 Points

Not sure why this isn't passing?

Did I misread the instruction or set the values wrong?

boards.py 
class Board:
    def __init__(self, width, height):
        self.width = width
        self.height = height
        self.cells = []
        for y in range(self.height):
            for x in range(self.width):
                self.cells.append((x, y))

class TicTacToe(Board):
    def __init__(self, width=3, height=3):
        self.width = width
        self.height = height

1 Answer

Kurt Maurer
Kurt Maurer
16,725 Points

Hey Keifer,

Thanks for the opportunity to review this stuff! I'm still working on developing my intuition with classes and inheritance, so if anyone else can elaborate, it would be much appreciated.

If we wanted a tictactoe board, we could do this:

TicTacToe = Board(3, 3)

However, the challenge wants us to make a subclass out of it, which means we want 3x3 to be the default values for the height and width. This will require overriding the init() of the Board() class. In your code, when you define the init(), you're essentially completely overriding the init() of the parent class. So your new TicTacToe() board would have height = 3, width = 3, but it wouldn't have a self.cells attribute. This is where super() comes in.

def __init__(self, width=3, height=3):
        super().__init__(width, height)

This is saying "I want all of the attributes from the parent class(technically, the next thing on the method resolution order)." But then you can modify them, as we did here.

If you substitute this bit of code for your subclass, it will pass. Hope this helps!

Keifer Joedicker
Keifer Joedicker
5,869 Points
Keifer Joedicker
Keifer Joedicker
5,869 Points

Thank you that makes a lot more sense!

Cristian Romero
Cristian Romero
11,911 Points
Cristian Romero
Cristian Romero
11,911 Points

Wow this is by far the best explanation I have come across! Thank you so much Kurt .