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Python Object-Oriented Python Inheritance Super!

Jordan Paul
Jordan Paul
2,744 Points
Posted by Jordan Paul
Jordan Paul
2,744 Points

Python OOP: super() challenge tasks

Hi,

I've watched the videos over and over to try to understand how super() works, but I still can't really grasp what it does or what it means to override a method with it. I feel pretty stuck. Help!

Jordan

inventory.py 
class Inventory:
    def __init__(self):
        self.slots = []

    def add_item(self, item):
        self.slots.append(item)

class SortedInventory(Inventory):

    def __init__(self, **kwargs):
        pass
Jordan Paul
Jordan Paul
2,744 Points
Jordan Paul
Jordan Paul
2,744 Points

This is the task: "I've made you a super-simple Inventory class that would let someone store items in it. Not the most useful class, but we'll build something better in a few videos.

For now, though, I need you to create a new class, SortedInventory that should be a subclass of Inventory.

You can just put pass in the body of your class for this step."

2 Answers

Jordan Paul
Jordan Paul
2,744 Points
Jordan Paul
Jordan Paul
2,744 Points

Thanks for your quick reply.

I think I still don't understand the interaction of classes and subclasses, overriding methods, or using super() and I'll have to look for more resources elsewhere to finish this course.

I'd be surprised if I'm the only one who feels this way, but I think this unit leaves a lot to be desired in terms of beginner-level explanation, pacing and practice. I've watched each of these videos multiple times and I don't understand the concepts any better. Too bad because previous units (especially the intro) have mostly been very well-taught and provided good opportunities for practice.

nakalkucing
nakalkucing
12,964 Points
nakalkucing
nakalkucing
12,964 Points

Np! :) Happy coding!

nakalkucing
nakalkucing
12,964 Points
nakalkucing
nakalkucing
12,964 Points

Hey Jordan Paul! I tried your code in the challenge and it passes the first task. But the second task asks you to:

override the add_item method. Use super() in it to make sure the item still gets added to the list.

You appear to be trying to override the init method.

Let me know if this does/doesn't help. OK? Thanks :)

Have you read the Teacher's Notes for the previous video Super-Duper? These may help you understand how super() works. Kenneth also links to a Blog about super() in the notes for this video. Hope this helps! :)