Lens-Slice.py

# 1. To keep track of the kinds of pizzas you sell, create a list called toppings that holds the following
toppings = ["pepperoni", "pineapple", "cheese", "sausage", "olives", "anchovies", "mushrooms"]

# 2. To keep track of how much each kind of pizza slice costs, create a list called prices that holds the following integer values
prices = ['2', '6', '1', '3', '2', '7', '2']

# 3. Your boss wants you to do some research on $2 slices. Count the number of occurrences of 2 in the prices list, and store the result in a variable called num_two_dollar_slices. Print it out.
num_two_dollar_slices = prices.count("2")
print(num_two_dollar_slices)

# 4. Find the length of the toppings list and store it in a variable called num_pizzas.
num_pizzas = len(toppings)

# 5. Print the string We sell [num_pizzas] different kinds of pizza!, where [num_pizzas] represents the value of our variable num_pizzas.
print("We sell " + str(num_pizzas) + " different kinds of pizza")

# 6. Use the existing data about the pizza toppings and prices to create a new two-dimensional list called pizza_and_prices. For this new list make sure the prices come before the topping name like so: [price, topping_name]
pizza_and_prices = [['2', 'pepperoni'], ['6', 'pineapple'], ['1', 'cheese'], ['3', 'sausage'], ['2', 'olives'], ['7', 'anchovies'], ['2', 'mushrooms']]
# 7. Print pizza_and_prices. Does it look the way you expect?
print(pizza_and_prices)

# 8. Sort pizza_and_prices so that the pizzas are in the order of increasing price (ascending)
pizza_and_prices.sort()
print(pizza_and_prices)

# 9. Store the first element of pizza_and_prices in a variable called cheapest_pizza.
cheapest_pizza = pizza_and_prices[0]

# 10. A man walks into the pizza store and shouts “I will have your MOST EXPENSIVE pizza!" Get the last item of the pizza_and_prices list and store it in a variable called priciest_pizza.
priciest_pizza = pizza_and_prices[-1]

# 11. It looks like the most expensive pizza from the previous step was our very last "anchovies" slice. Remove it from our pizza_and_prices list since the man bought the last slice
popped_pizza = pizza_and_prices.pop()

# 12. Since there is no longer an "anchovies" pizza, you want to add a new topping called "peppers" to keep your customers excited about new toppings.
pizza_and_prices.insert(0, ['2.5', 'peppers'])
pizza_and_prices.sort()
print(pizza_and_prices)

# 13. Three mice walk into the store. They don’t have much money (they’re mice), but they do each want different pizzas. Slice the pizza_and_prices list and store the 3 lowest cost pizzas in a list called three_cheapest.
three_cheapest = pizza_and_prices[:3]

# 14. Great job! The mice are very pleased and will be leaving you a 5-star review. Print the three_cheapest list.
print(three_cheapest)