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Python

donald kaiser
donald kaiser
9,736 Points

Object-Oriented Code Challenge @classmethod.

As the instructions suggested, I created the class method but I'm not sure if my code is not getting me the correct outputs. I checked for misspellings and I can't find any. Please help.

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, string):
        new_list = []
        my_list = string.split("-")
        for item in my_list:
            if item == 'dot':
                new_list.append('.')
            elif item == "dash":
                new_list.append("-")
        return cls(patternList)


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

2 Answers

In the instructions:

creates an instance with the correct pattern (['_', '.']).

that is an underscore not a hyphen. So you would want:

new_list.append("_")

Then you should return cls(new_list). patternList is not defined.

donald kaiser
donald kaiser
9,736 Points

Ok thanks Kris this worked.

@classmethod def from_string(cls, string): new_list = [] my_list = string.split("-") for item in my_list: if item == 'dot': new_list.append('.') elif item == "dash": new_list.append("_") return cls(new_list)

keep on saying no method from_string defined