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Python Object-Oriented Python Inheritance Super!

Tijn-Pieter Koopman
Tijn-Pieter Koopman
4,128 Points
Posted by Tijn-Pieter Koopman
Tijn-Pieter Koopman
4,128 Points

Super! task 2 of 3

I don't really know what I have to do here.

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

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

class SortedInventory(Inventory):
    super().add_item(item)
    def add_item(item):
        self.slots.append(item)

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

You are very close!

  • You need to include self as the first argument in SortedInventory.add_item() definition
  • The super call should be inside the SortedInventory.add_item() definition
  • You do not need to include the append statement since the append is performed during the super call

Post back if you need more help. Good Luck!

Tijn-Pieter Koopman
Tijn-Pieter Koopman
4,128 Points
Tijn-Pieter Koopman
Tijn-Pieter Koopman
4,128 Points

Thanks it worked! do you also know task 3?

I tried:

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

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

class SortedInventory(Inventory):
    def add_item(self, item):
        super().add_item(item)
    list.sort(slots)

but it said that slots is not defined

Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

When the challenge says "use the list.sort() method", it means that since self.slots is a list, it has a sort() method that can be used to sort itself: self.slots.sort(). Be sure the sort is done within the method.