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 Python Basics (2015) Shopping List App Refactor

Posted by Alexander Estefanous
Alexander Estefanous
Courses Plus Student 3,579 Points

Struggling with the last task. could someone help and let me know where im going wrong? (sorry if the answer is obvious)

From what I can see I have refactored the code, however, i am aware that my indentations might not be perfect.

I have tried several times to re-jig but to no avail.

Thanks in advance!

shopping_list.py 
def show_help():
    # print out instructions on how to use the app
    print("What should we pick up at the store?")
    print("""
Enter 'DONE' to stop adding items.
Enter 'HELP' for this help.
Enter 'SHOW' to see your current list.
""")

def show_list(shopping_list):
    # print out the list
    print("Here's your list:")

    for item in shopping_list:
        print(item)

def add_to_list(shopping_list, new_item):
    # add new items to our list
    shopping_list.append(new_item)
    print("Added {}. List now has {} items.".format(new_item, len(shopping_list)))
    return shopping_list


def main ():
    show_help()
        shopping_list = []
    while True:
        new_item = input("> ")
    if new_item == 'DONE':
            break
    elif new_item == 'HELP':
        show_help()
        continue
    elif new_item == 'SHOW':
        show_list(shopping_list)
        continue
    add_to_list(shopping_list, new_item)

    show_list(shopping_list)

main()

1 Answer

Benjamin Verspeak
Benjamin Verspeak
10,940 Points
Benjamin Verspeak
Benjamin Verspeak
10,940 Points

all the challenge is asking is for you to create a function named main and put everything show_help() and below within it. When you do that, simply indent everything over 1 tab. there is no reason to call the function at the end.

Hope the below helps

def main():    
    show_help()

    # make a list to hold onto our items
    shopping_list = []

    while True:
        # ask for new items
        new_item = input("> ")

        # be able to quit the app
        if new_item == 'DONE':
            break
        elif new_item == 'HELP':
            show_help()
            continue
        elif new_item == 'SHOW':
            show_list(shopping_list)
            continue
        add_to_list(shopping_list, new_item)

    show_list(shopping_list)
Alexander Estefanous
Alexander Estefanous
Courses Plus Student 3,579 Points

Thank you, Benjamin.

Have a great day!