I'm reviewing; this code doesn't work on my mac, I can't figure out the problem.

sodas = ["Pepsi", "Diet coke", "Orange Soda"]
candy = ["Twizzlers", "Snickers Bar", "Candy Crush"]
chips = ["Potatos", "Barbeque Chips", "Pringles"]

while True:
    try:
        choice = input("Do you want a CANDY, CHIPS or SODA? ")
        if choice == 'chips':
            snack = chips.pop()
        elif choice == 'soda':
            snack = sodas.pop()
        elif choice == 'candy':
            snack = candy.pop()
        else:
            print("Sorry, I don't understand that")
            continue
    except IndexError:
        print("Sorry, we are out of {}".format(choice))
    else:
        print("Here's your {}: {}".format(choice, snack))