Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Object-Oriented Python Dice Roller Boards

making class Board iterable

Hi,

Can someone please help with this?

Looks like Board is already iterable with the cells list. I am not sure what to do for this challenge.

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):
        self.list1 = []
        super().__init__(width=3, height=3)

    def add(self, item):
        self.list1.append(item)

1 Answer

Steven Parker
Steven Parker
231,275 Points

For a class to be iterable, it must implement the __iter__ method. This will generally involve the use of the yield keyword.

The challenge itself makes this suggestion: "If you need help, refer back to the Emulating Builtins video.".