Inventory Manager

Create a program that a store manager could use to keep track of their product inventory

$($i$.$e$.$ Store the type of item $($key$)$ and the amount of items $($value$)$ in the inventory$)$

The user should be able to:

Add $(/$edit$)$ products

Find a product by name

Remove a product by name

Constraints:

When adding a product, the quantity in stock must be a positive integer or zero. Invalid numbers should not throw an exception.

See the examples in the Replit $/$ extra help.

When finding or deleting a product, if the specified product is not found, then the program should not raise a KeyError.

BONUS $(+3)$

Add an additional option that allows a user to predict the amount in revenue for a given product if they enter a price. Negative prices must not be allowed.

Note that the dictionary does NOT store the price$-$ It stores the quantity.

You'll need to ask the user for the price of the item to determine the amount in revenue the company would make off that product.

For example, if we sell $5$ fridges for $$100$ each, the total revenue is $$500.$

Example:

Choose a selection:

Add$/$edit a product in the inventory

Find the amount of items in stock for a product

Delete a product by name

Display all products and amount in stock

Predict revenue based on unit price

Exit

$>5$

Enter the name of the product: fridge

Enter the price of the product: $100$

Predicted revenue: $$500\mathrm{.}00$