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Python

Posted by Sean Banko
Sean Banko
6,558 Points

Code passed morse code challenge, but the output of print(S.__str__) in workspaces is not correct

My code passed the morse code challenge, but when I run this in workspaces and print(S.str) (that is, S dunder str) the output is "<function Letter.__str__ at 0x7f7bad1e5268>", not "dot-dot-dot". Does anyone know why this happens?

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

    def __str__(self):
        my_list = []
        for symbol in self.pattern:
            if symbol == ".":
                my_list.append("dot")
            if symbol == "_":
                my_list.append("dash")
        return "-".join(my_list)

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

1 Answer

Steven Parker
Steven Parker
243,656 Points
Steven Parker
Steven Parker
243,656 Points

You're printing the reference to the method itself instead of running it and printing the results.

To test the conversion process, you should create an instance of the "S" class, and then print the string representation of it:

print(str(S()))  # converting the "S" object to a string runs the __str__ method
print(S())       # this does the same due to implicit type coercion
Sean Banko
Sean Banko
6,558 Points

Oh, I think I get it now. Changing the str method for the Letter class changes what happens when an instance of a Letter is coerced into a string, and I hadn't actually created an instance of the letter S to be coerced at all. Thank you!