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Python Object-Oriented Python (retired) Objects Create a Class with a Method

Ahmed Elsawey
PLUS
Ahmed Elsawey
Courses Plus Student 3,527 Points
Posted by Ahmed Elsawey
Ahmed Elsawey
Courses Plus Student 3,527 Points

What is wrong with the last line or formatting the string?

Why s my formatting wrong? chris freeman

method.py 
class Store:
  open = 9
  close = 10
  def hours(self):
    return ("We're open from {} to {}.".format(open, close))

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

I suspect the error message is 'close' is not defined. The question is then, for your "close", where is it defined?

"close" is looked for in the following places:

  • a local variable to hours(): Nope!
  • a parameter to `hours()': Nope!
  • a instance attribute: Nope! (you'll learn more about these later)
  • a class attribute: BINGO! open and close are class attributes that can be reference using self.open and self.close.

Add self. to your format parameters: ...format(self.open, self.close)

BTW, the reason that open wasn't flagged as "not defined" is because open() is a built-in function which I suspect is not what you want to pass to your format() string. It's a HORRIBLE name to use as a coding example. IMHO