Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.


Im I wrong or the website??

The code looks right however its giving me an error of "Couldn't import Letter". Which to me feels like the code Challenge has messed up. Is there any way to fix? Or am I wrong?

class Letter:
    def __init__(self, pattern=None):
        self.pattern = pattern

    def __iter__(self):
        yield from self.pattern

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

    def from_string(cls, string):
        split_str = string.split("-")
        output = []
        for text in split_str:
            if text == "dash":

        return cls(output)

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

1 Answer

You have some typos:

1) @classmothod instead of @classmethod

2) Inside from_string you have (twice) output.appedn instead of output.append