Problem $2$

In this problem, you will reuse the InventoryItem class you created in Problem $1$ to create an inventory collecting program.

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You have been given a starter file which needs to be updated. With your updates, you will have a program that can collect inventory information and save it to a binary file. That file is loaded when the program starts if the file is present.

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The program has TODO comments which indicate where you need to make changes:

$$ In the main$()$ function, there is a while loop in which the program asks for inventory item data from the user and stores those items in a list. Implement the part which creates the InventoryItem object, asks the user for input, and then appends the object to the inventory list.

$$ In the load$\_$inventory$()$ function, attempt to open a binary file named "inventory.dat".

o$$ If the file exists, load it into the inventory list and return that list to the calling routine.

o$$ If the file doesn't exist, just return an empty list ot the calling routine.

$$ In the save$\_$inventory$()$function$,$ open a binary file named inventory.dat and dump the inventory list that was passed as a parameter to the function.

$$ In the display$\_$category$()$function$,$ display each InventoryItem object that is in that category, or display $"$No items." if there are no items in that category.

$$ In the display$\_$inventory$()$function$,$ display each InventoryItem object that is in the list, or display "Inventory is empty." if the list is empty.

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Once all the TODO sections are completed, the program should be able to maintain the list of inventory items between executions of the program.

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Sample Output $$ First run