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modular programming

By importing the
transactions module like this, from transactions import *
you can call the functions
without the module name. import promotion

import starbuzz
You need to use this kind of
import for “promotion.py”
and “starbuzz.py”, because
you are going to qualify the items = [“DONUT", “LATTE", “FILTER", “MUFFIN"]
function names with the
module names. prices = [1.50, 2.20, 1.80, 1.20]

running = True

while running:

option = 1

for choice in items:
print(str(option) + “. " + choice)

option = option + 1

print(str(option) + “. Quit")

choice = int(input(“Choose an option: "))
if choice == option:

running = False

else:

credit_card = input(“Credit card number: ")
If someone has a price = promotion.discount(prices[choice - 1])
Starbuzz Discount
Card, you need to if input(“Starbuzz card? ") == “Y":
apply the second
Starbuzz discount. price = starbuzz.discount(price)

save_transaction(price, credit_card, items[choice - 1])

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