Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Python Introducing Lists Build an Application Add Items

Luis Castillo
Luis Castillo
1,842 Points

My code is not working and I can't figure out why when I call my function add_to_list is not showing the 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("The item was added to the list,There currently are" 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_list)

4 Answers

Josh Keenan
Josh Keenan
20,315 Points

You haven't concatenated the string, re read the line and I am sure you can get this!

print("The item was added to the list,There currently are" len(shopping_list))
Luis Castillo
Luis Castillo
1,842 Points

My code is not working and I can't figure out why when I call my function add_to_list is not showing the 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("The item was added to the list,There currently are" 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_list)
Kevin Verbeek
Kevin Verbeek
5,499 Points

Try using this line at the print in your function.

print("The item was added to the list,There currently are".format(len(shopping_list)))

Also, the indent of your continue after the elif needs to be 4 spaces to the right, or it won't work

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,454 Points

for the function add_to_list, there is a missing comma before len in

print("The item was added to the list,There currently are" len(shopping_list))
Nicholas Suraci
Nicholas Suraci
7,543 Points

looks like your continue isn't indented properly, I ran into a similar problem. I hope this helps!