Python Object-Oriented Python Advanced Objects Iterable

Alexandru Vlasnita
Alexandru Vlasnita
4,180 Points

I have no idea how to properly use this __iter__

What am i doing wrong it here?
class Letter:
    def __init__(self, pattern=None):
        self.pattern = pattern

    def __iter__(self):
        for item in self.pattern:
            yield from self.pattern

    def __str__(self):
        output = []
        for blip in self.pattern:
            if blip == '.':
        return '-'.join(output)

class S(Letter):
    def __init__(self):
         pattern = ['.', '.', '.']

2 Answers

Steven Parker
Steven Parker
182,288 Points

You're close, but since your loop is already iterating each element of the pattern as "item", you just need to "yield item" in the body of the loop.

If you want to use "yield from", it would replace the loop (and make the method even more compact).

Alexandru Vlasnita
Alexandru Vlasnita
4,180 Points

Oh now i see the problem, thanks for the help!