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Python Introducing Lists Build an Application Add Items

Adem Gun
Adem Gun
1,511 Points
Posted by Adem Gun
Adem Gun
1,511 Points

After entering an item such as apples, I do not get the "Added! Last has x items" message.

Create a new empty list named shopping_list

shopping_list = []

Create a function named add_to_list that declares a parameter named item

def add_to_list(item): # Add the item to the list shopping_list.append(item) # Notify user that the item was added, and state the number of items in the list currently print("Added! List has {} items.".format(len(shopping_list)))

def show_help(): print("What should we pick up at the store?") print(""" Enter 'DONE' to stop adding items. Enter 'HELP' for this help. """)

show_help() while True: new_item = input("> ")

if new_item == 'DONE':
    break
elif new_item == 'HELP':
    show_help()
    continue

    # Call add_to_list with new_item as an argument
    add_to_list(new_item)

2 Answers

Brandon White
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Full Stack JavaScript Techdegree Graduate 35,771 Points
Brandon White
.a{fill-rule:evenodd;}techdegree seal-36
Brandon White
Full Stack JavaScript Techdegree Graduate 35,771 Points

Hi Adem Gun,

I think you're wanting to call add_to_list(new_item) within an else block. The way your code is currently written, that calling of the add_to_list(new_item) function is unreachable by the interpreter. If the user types 'DONE' then the while loop is broken, and if they type 'HELP' it shows the help menu, then skips back to the start of the while loop, but if the user types anything else there's no code to account for that, so the loop starts over.

If you place that function call inside of an else block, then your program should work as expected.

Adem Gun
Adem Gun
1,511 Points
Adem Gun
Adem Gun
1,511 Points

Thanks Brandon White!