# Create displayList
displayList = []
# Loop through the prices in levelsList.
# During each loop:
# - Create a variable called priceLevelLabel consisting of the text 'Price Level: ' followed
# by the price.
# - Add priceLevelLabel and the price as two separate items to a new list (the sub-List).
# - Append the sub-List to displayList.
for price in self.levelsList:
...
Write a program that enable one to key in any 4 numbers and determine their GCD.
Write a program to key in any four numbers and determine the G.C.D.
# Loop through the prices in levelsList.
# During each loop:
# - Create a variable called priceLevelLabel consisting of the text 'Price Level: ' followed
# by the price.
# - Add priceLevelLabel and the price as two separate items to a new list (the sub-List).
# - Append the sub-List to displayList.
for price in self.levelsList:
...
# Create a variable called previousPriceLabel consisting of the text 'Previous Price: ' followed
# by previousPrice.
# Add previousPriceLabel and previousPrice as two separate items to a new list (the sub-List).
# Append the sub-List to displayList.
...
# Create a variable called currentPriceLabel consisting of the text 'Current Price: ' followed
# by currentPrice.
# Add currentPriceLabel and currentPrice as two separate items to a new list (the sub-List).
# Append the sub-List to displayList.
...Given an array