CH05 - If Statements (part 3)

Explain the difference between an if-elif-else chain and a series of independent if statements. When would you use one over the other? Provide an example for each.

The document states that when a list is used in an if statement, an empty list evaluates to False. Why is this a useful feature when dealing with user-provided input?

What is the purpose of checking if a list is not empty before running a for loop? What could happen if you don't perform this check?

Describe how you would use a loop and an if statement together to process each item in a list and handle one or more "special" items differently.

Pizza Topping Order: A pizzeria has a list of toppings they have in stock and a customer places an order with a list of requested toppings. Describe how you would write a program that loops through the customer's request and prints a message for each topping, indicating whether it has been added to the pizza or if it is unavailable.

Shopping Cart Validation: An e-commerce website has a list of items a user has placed in their shopping cart. Before processing the order, you need to verify that none of the items are from a list of banned_items. Describe how you would use an if statement with the not in keyword and a for loop to check each item in the shopping cart and print a message if a banned item is found.