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Python

Topher Knoll
Topher Knoll
3,572 Points
Posted by Topher Knoll
Topher Knoll
3,572 Points

Loop or if statement?

I'm not sure if I should be doing a list or if statement here. Neither work anyway. Can someone give me some direction? The challenge is pretty unclear.

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):
        output = []
        if string == 'dash':
            output.append('_')
        elif string == 'dot':
            output.append('.')
        return cls(output)



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

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You've got the right idea about using a loop to convert each part of the string one at a time. You may need to break the string up into pieces first, the "split" operation might be useful for that.

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Yes, the test you have is good for part of the string but not the whole thing. But if you break it up and use a loop to go through each bit one at a time, then that test would go inside the loop.

Topher Knoll
Topher Knoll
3,572 Points
Topher Knoll
Topher Knoll
3,572 Points

I still don't get it. So do I loop through and THEN made an if statement? These code challenge would be better if they gave more specific reasons for why it's wrong and if they showed what was being passed in.