Having issues adding more than one item to the list and having problems exiting application by typing DONE.

# Create a list 
shopping_list = []

# Create a function that adds an item to the list.
def add_list(item):
    shopping_list.append(item)
#Let user know the item has been added and state the number of items in the list.
    print("Added: Item has just been added {}".format(len(shopping_list)))

def show_help():
    print("What should we pickup at the store??")
    print("""
        Enter 'DONE' when you are finished.
        Enter 'HELP' when you need help
        """)
show_help()

while True:
  new_item = input("> ")
    
    
  if new_item == 'DONE':
      break
  elif new_item == 'HELP':
      show_help()
  continue
    
#Call function that adds item to the list
add_list(new_item)