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Python Object-Oriented Python Instant Objects Your first class

Posted by Keegan Swanson
Keegan Swanson
1,339 Points

I am so so very much confused... Can someone please help me.

I've tried so many things for the top half but nothings working. I was told the bottom half was right, is it?

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

    def praise(self.name):
        return

keegan = Student()
keegan.name = "Keegan"
print(keegan.praise())

3 Answers

Josh Klink
Josh Klink
2,330 Points

Yo Keegan, you are way overthinking it.

class Student:
     name = "Joshua Klink"
me = Student()
print(me.name)

As you can see, I used my name as an example you should use yours!!!

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

Your structure isn't quite right.

  • a method should have self as the first parameter. This becomes a reference to the instance executing the method.
  • using self.name is the correct way to reference the instance variable. Great job!
  • The return statement has no argument and will return None.
  • The return statement argument should be a string that references self.name

Post back if you need more help. Good luck!!

Keegan Swanson
Keegan Swanson
1,339 Points

What do you mean when you say "the first parameter"?

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

When defining a method, the first item listed in the parameter list is the reference for the instance:

>>> class ClassName:
...     def method_name(self, param_a, param_b):
...         return f"result: param_a is {param_a}, param_b is {param_b}"
... 
>>> class_instance = ClassName()
>>> method_result = class_instance.method_name("arg1", "arg2")
>>> method_result
'result: param_a is arg1, param_b is arg2'

The parameter self is used during the instantiation of the instance and is not provided by the calling statement

Keegan Swanson
Keegan Swanson
1,339 Points
Keegan Swanson
Keegan Swanson
1,339 Points

So what would I do?

Howard Hufford
Howard Hufford
1,450 Points
Howard Hufford
Howard Hufford
1,450 Points

Here are the directions for anyone reading:

I need you to add a method name praise. The method should return a positive message about the student which includes the name attribute. As an example, it could say "You're doing a great job, Jacinta!" or "I really like your hair today, Michael!".

In your example, Keegan, you started out correctly by adding the method praise. In this case we need to add (self) only afterwards.

class Student:
    name = "Your Name"
    def praise(self):
    # (self) is the parameter used in methods and it will need to be referenced later in the code somewhere.
    # So now that we have the method (def praise(self)) created, it needs to return a message and the name attribute.
        return "Great job, {}!".format(self.name)
    # Above, the parameter self was used to reference the name attribute.  The printed message uses the format of self.name to access "Your Name"

What you have at the bottom is not necessary. If you wanted to add your name, you would replace "Your Name" with "Keegan"