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Python

Posted by Kiran K
Kiran K
1,029 Points

Magic method str, I'm getting expected output string on my machine. Output is "class 'str'"

Not sure why the output is not matching.

morse.py 
class Letter:
    def __init__(self, pattern=None):
        self.pattern = pattern

    def __str__(self):
        dotlist = []
        dashlist = []
        for xpattern in self.pattern:
            if "." == xpattern:
                dotlist.append("dot")
            else:
                dashlist.append("dash")

        return "-".join(dotlist) + "-" + "-".join(dashlist)


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

xpattern = S()
xpattern.__str__()

2 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

Rather than a dot list followed by a dash list there should be a single list containing a possible mix of dots and dashes. So for example a pattern of ['.', '_', '.', '_'] would return:

dot-dash-dot-dash

instead of

dot-dot-dash-dash

Kiran K
Kiran K
1,029 Points

Thank you for the response. Instruction is not clear "I've included an S class as an example (I'll generate the others when I test your code) and it's str output should be "dot-dot-dot"."

Update the code as follow: class Letter: def init(self, pattern=None): self.pattern = pattern

def __str__(self):
    mixlist = []
    for xpattern in self.pattern:
        if "." in xpattern:
            mixlist.append("dot")
        else:
            mixlist.append("dash")

    dotstr = "-".join(mixlist)
    return dotstr

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

def hello(self):
    return "Hello String"

pattern = S() p = pattern.str() print(p) This is returning "dot-dash-dot-dash-dot"

I'm getting the same error: Bummer: Didn't get the right string output. Got: dot-dash-dot-dash-dot for S()

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

The S class is an example and shouldn't be edited. Other tests will be done as indicated by the instructions: (I'll generate the others when I test your code). The only code you need to provide is the __str__ method in class Letter. If you add just your updated code for this method you should pass the challenge.