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Python

Posted by Ethan Pyles
Ethan Pyles
2,710 Points

Bummer: Try Again. How can I debug the code in my workspace?

How can I feed the string into str and see the results?

Thinking, pls verify, print(S.str(['.', '.', '.']))

Thank you in advance...

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

    def __str__(self, pattern):
        for item in pattern:

            if item is '.':
                code.append = 'dot'

            elif item is '_':
                code.append = 'dash'

        return ('-'.join(code))



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

4 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Yea, those challenge messages can be pretty terse. You can copy the challenge to the workspace for debugging, but be careful because the workspace has no idea what the objective is!

And here's a few hints:

  • this method shouldn't take an argument (just the "self" parameter)
  • when you refer to "pattern", be sure to use the "self." prefix
  • instead of the identity operator ("is"), you probably want to use the equality comparison ("==")
  • append is a method, so the argument should go in parentheses after the method name
Ethan Pyles
Ethan Pyles
2,710 Points
Ethan Pyles
Ethan Pyles
2,710 Points

I will check it out. Thank you.

Ethan Pyles
Ethan Pyles
2,710 Points

I'm getting a SyntaxError: Can't assign the function call pointing to code.append(item) = 'dash' when I run in my Workspace

class Letter: code = [] def init(self, pattern=None): self.pattern = pattern

def __str__(self):
    for item in self:

        if item == '.':
            code.append(item) = 'dot'

        elif item == '_':
            code.append(item) = 'dash'

        print(code)

    return ('-'.join(code))

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

Ethan Pyles
Ethan Pyles
2,710 Points
Ethan Pyles
Ethan Pyles
2,710 Points

class Letter: code = [] def init(self, pattern=None): self.pattern = pattern

def __str__(self):
    for item in self:

        if item == '.':
          code.append(item) = 'dot'

        elif item == '_':
          code.append(item) = 'dash'

    return ('-'.join(code))

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

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Method calling syntax doesn't use an assignment operator:

          code.append(item) = 'dot'   # instead of this
          code.append('dot')          # try this

And remember, "self" is the object, the pattern is "self.pattern".

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

When I run my code in PyCharm I get the output, "dot-dot-dot," which I thought is what we're looking for. Why when I run it in the code challenge it says the output is, "dash-dash-dash-dot-dash-dash-dot-dot-dot-dot?"

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

The challenge performs a more thorough test than just one letter.