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Python

Posted by Brian Hudson
Brian Hudson
14,785 Points

@classmethod error

My code from the "Construction Zone" challenge:

```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):
    convert_string = string.split('-')
    output = []
    for i in convert_string = string.split('-')
        if i == 'dash':
            output.append('_')
        elif i == 'dot':
            output.append('.')
    return cls(output)

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

The code passed, but after copy/pasting all of this into my console, and then trying to test the from_string method, I got the following:

ns = from_string(Letter, 'dash-dot-dash-dash-dot') Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'classmethod' object is not callable

So, the classmethod is defined and so is the Letter parent class. Am I not calling it correctly?
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)


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

2 Answers

Andrew Shannon
Andrew Shannon
9,115 Points
Andrew Shannon
Andrew Shannon
9,115 Points

Take a look at your for loop. There is an error that I corrected :)

EDIT: I also dont understand the markdown on this page. Not sure why my code block is in white 

    def from_string(cls, string):
        convert_string = string.split('-')
        output = []
        for i in convert_string:
            if i == 'dash':
                output.append('_')
            elif i == 'dot':
                output.append('.')
        return cls(output)
Brian Hudson
Brian Hudson
14,785 Points
Brian Hudson
Brian Hudson
14,785 Points

Ok I completely messed up the markdown in that last one. Gonna try again in a new window.