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

P Hoyt
P Hoyt
1,555 Points
Posted by P Hoyt
P Hoyt
1,555 Points

Im stuck on this one. Can determine why my classmethod is failing here.

I've googled the question, and my code appears to be similar to code that has passed. I'm sure Im missing something basic. Also not sure why there are red dashes next to the 2nd and 3rd methods under the Letter class.

morse.py 
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 == '.':
                output.append('dot')
            else:
                output.append('dash')
        return '-'.join(output)

    @classmethod
    def from_string(cls, new_string):
        split_str = new_string.split('-')
        new_list = []
        for i in split_str:
            if i == 'dot':
                new_list.append('.')
            else:
                new_list.append('-')
        return cls(new_list)


class S(Letter):
    def __init__(self):
         pattern = ['.', '.', '.']
         super().__init__(pattern)
P Hoyt
P Hoyt
1,555 Points
P Hoyt
P Hoyt
1,555 Points

fyi the red dashes i mentioned dont appear in the pasted code above.

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

In the second "append", the code adds a hyphen ('-') instead of an underscore ('_'). Typo, perhaps?

P Hoyt
P Hoyt
1,555 Points
P Hoyt
P Hoyt
1,555 Points

That did the trick. Thanks Steven