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Python Object-Oriented Python Inheritance Super!

Hans Fricke
Hans Fricke
8,974 Points

inventory: the items do not seem to be sorted.

Hi I am working on the inventory challenge.

It asks you to sort a list in an inherited class, and I keep get the answer "the items in the list appear not to be sorted"

What am I doing wrong?

Thank you! Hans

here is my code:

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)
    self.slots.append(item)
    self.slots.sort()
inventory.py
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)
        self.slots.append(item)
        self.slots.sort()

1 Answer

Rich Zimmerman
Rich Zimmerman
24,063 Points

Looks like you're adding the items twice, calling the add_item() method, which appends the item to slots, and then also appending the item to slots again in the next line.

The error message could just be because you have the items appended twice each time in the test cases and the error message just isn't intuitive enough.

Hans Fricke
Hans Fricke
8,974 Points

Great. Now, I got it.