Why do we need to put the show_list() function at the end?

One thing to remember is that in Python, white-space characters (tabs, newlines, etc), can actually change how your program runs. Depending on how you moved it, accidentally pasting in extra white-space character, pasting in a way that the program thinks your code is now in a method (def), are all things that could have made it fail. Another thing to consider is if the code depends on some other code having run, changing the order can make it fail. I tried moving the call away from the bottom and received no error. Hopefully that helps!

Hi Caleb!

I'm not sure what you mean? I think I might've been confusing with my wording. I defined the function show_list() in the file and the code worked just fine. I was just wondering why in the video, Craig put the show_list() function again at the end, after the add_to_list(new_item)? I apologize if I'm misinterpreting; here's what I did:

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.
Enter 'SHOW' to display the list.
""")


def add_to_list(item):
    shopping_list.append(item)
    print("Your item was added to the shopping list. The list currently has {} item(s).".format(len(shopping_list)))   


def show_list():
    print("Here's your list:")
    for item in shopping_list:
        print(item)


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

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

    add_to_list(new_item)

Oh, that makes total sense! Thank you!

Happy I was able to help