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Python

Why am I getting the try again error?

Not sure how @classmethod works but it should be straight forward. I split the str by the hyphen. Iterate through the str and append '.', or '_' to the pattern list and return it. But I am getting the try again error.

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, str):
        pattern = []
        new_str = str.split('-')
        for word in new_str:
            if word.lower() == 'dash':
                pattern.append('_')
            elif word.lower() == 'dot':
                pattern.append('.')
        return pattern


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

1 Answer

Alex Koumparos
seal-mask
.a{fill-rule:evenodd;}techdegree
Alex Koumparos
Python Development Techdegree Student 36,887 Points

Hi Odane,

The challenge is asking you to return an instance of the class, initialised from the values that your method gets given. Instead you are returning a list.

Cheers

Alex