Write a PYTHON program that prompts for grocery list items and prints only unique items. Convert the items to lower case prior to storing in list. Hint: use the in operator to determine it item is already in list. Sample run: Add another item or done to quit: Eggs Add another item or done to quit: milk

Add another item or done to quit: salt Add another item or done to quit: eggs Add another item or done to quit: spam Add another item or done to quit: Salt Add another item or done to quit: done eggs milk salt spam