Level 08: files and exceptions 0 van 9 activiteiten opgelost
  1. 1. Saving data
  2. 2. School club
  3. 3. Shopping list
  4. 4. Attributes
  5. 5. Cookies
  6. 6. Morse code
  7. 7. ini file
  8. 8. Amino acids
  9. 9. Gamertag
Volgende reeks Level 09: two-dimension arrays and lists
Level 08: files and exceptions

3. Shopping list

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# Shopping list program # ------------------------- # Subprograms # ------------------------- def add_item(): new_item = input("Enter the item to add to the list: ") file = open("shopping.txt", "a") new_item = new_item + "\n" file.write(new_item) file.close() def output_items(): try: file = open("shopping.txt", "r") except FileNotFoundError: file = open("shopping.txt", "w") file.close() else: print("-----------------------------") for item in file: item = item.strip() print(item) file.close() print("-----------------------------") def sort_items(): try: file = open("shopping.txt", "r") except FileNotFoundError: file = open("shopping.txt", "w") file.close() else: item_list = [] for item in file: item = item.strip() item_list.append(item) file.close() item_list.sort() file = open("shopping.txt", "w") for item in item_list: item = item + "\n" file.write(item) file.close() def menu(): choice = "" while choice != "4": print("1. Add item") print("2. Output shopping list") print("3. Sort list") print("4. Quit") while choice not in ["1", "2", "3", "4"]: choice = input("Enter choice: ") match choice: case "1": add_item() choice = "" case "2": output_items() choice = "" case "3": sort_items() choice = "" # ------------------------- # Main program # ------------------------- menu()