Help me plz

def show_help():
    # print out instructions on how to use the app
    print("What should we pick up at the store?")
    print("""
Enter 'DONE' to stop adding items.
Enter 'HELP' for this help.
Enter 'SHOW' to see your current list.
""")

def show_list(shopping_list):
    # print out the list
    print("Here's your list:")

    for item in shopping_list:
        print(item)

def add_to_list(shopping_list, new_item):
    # add new items to our list
    shopping_list.append(new_item)
    print("Added {}. List now has {} items.".format(new_item, len(shopping_list)))
    return shopping_list
def main():
    show_help()
    shopping_list = []
    while True:
        new_item = input("> ")
        if new_item == 'DONE':
            break
        elif new_item == 'HELP':
              show_help()
                 continue

    # ask for new items


    # be able to quit the app





        elif new_item == 'SHOW':
             show_list(shopping_list)
                continue
             add_to_list(shopping_list, new_item)


# make a list to hold onto our items




show_list(shopping_list)