class methods

Question

not sure

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):
        correct_pattern = []
        words = string.split("-")
        for word in words:
            if word == "dot":
                correct_pattern.append(".")
            else:
                correct_pattern.append("-")
        return correct_pattern


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

Answer 1 · 2018-02-16T09:52:19Z

February 16, 2018 9:52am

You are very close! The pattern generated needs to use an underscore instead of a hyphen.

Now that you have the correct pattern, the classmethod needs to return an instance of the class. This can be done using cls() with the correct pattern as the argument.

Post back if you need more help. Good luck!!!

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Lee McCormick

Lee McCormick

class methods

1 Answer

Chris Freeman

Chris Freeman