Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Object-Oriented Python Instant Objects Method Interactivity

Exception: feedback() takes 1 positional argument but 2 were given Restart

I am not sure where I am going wrong with the feedback method.

first_class.py
class Student:
    name = "Your Name"

    def praise(self):
        return "You inspire me, {}".format(self.name)

    def reassurance(self):
        return "Chin up, {}. You'll get it next time!".format(self.name)

    def feedback(grade):
        if grade>50: 
            return praise(self)
        else: 
            return reassurance(self)

1 Answer

Steven Parker
Steven Parker
228,991 Points

A few hints:

  • every instance method takes "self" as a first argument (plus any others it needs).
  • when calling a method in the same class, preface the name with "self."
  • you don't normally pass "self" explicitly as an argument (the class handles that)

Thank you! I don't exactly understand why self has to be used like in self.praise, but I am seeing that I have to.

Steven Parker
Steven Parker
228,991 Points

I believe it's necessary to reference the instance to call the instance method on it. Apparently Python doesn't have an implied context inside the class as some other languages do.