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Python

Posted by Bob Prestridge
Bob Prestridge
8,400 Points

Attaching code this time: object-oriented Python

This is the challenge:

Let's practice using @classmethod!

Create a class method in Letter named from_string that takes a string like "dash-dot" and creates an instance with the correct pattern (['_', '.']).

Following is my code; I don't understand what I'm doing wrong.

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 = string.split('-')
        dot_dash = []
        for blip in new_list:
            if blip == 'dash':
                dot_dash.append('_')
            else:
                dot_dash.append('.')
        return cls(dot_dash)    

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

2 Answers

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

The code looks great. :+1: You just need to indent the "@classmethod" line.

Bob Prestridge
Bob Prestridge
8,400 Points
Bob Prestridge
Bob Prestridge
8,400 Points

It worked! Thank you, Mr. Parker!