Snippet

    def add_item(inventory, item, quantity) -> None:
        item_found = False
        for key in inventory:
            if key == item:
                inventory[key] += quantity
                item_found = True

        if not item_found:
            inventory[item] = quantity

    def remove_item(inventory, item, quantity) -> None:
        item_found = False
        for key in inventory:
            if key == item:
                inventory[key] -= quantity
                if inventory[key] < 0:
                    inventory[key] = 0
                item_found = True

    def main():
        inventory = {
            'Apples': 30,
            'Oranges': 15,
            'Bananas': 20
        }

        add_item(inventory, 'Apples', 10)
        remove_item(inventory, 'Bananas', 25)

        print("Current inventory:", inventory)

    if __name__ == "__main__":
        main()

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