def show_items(self):
    if (not self.all_items_in_cart):
        print('Your Cart is empty.')
    print('Your Cart:')
    for item in self.all_items_in_cart:
        print(item)
def show_items(self):
    if (not self.all_items_in_cart):
        print('Your Cart is empty.')
    print('Your Cart:')
    for item in self.all_items_in_cart:
        print(item)