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Python Python Basics (2015) Shopping List App Refactor

varun ganglani
varun ganglani
4,665 Points

WHY CANT I GET THE FULL CODE IN THE FUNCTION!a

very confused... is it the indentatio

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()

    # 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)

main()    

1 Answer

Hi there,

You've pretty much got it - just take out the last line where you call main(). You'd want to do that in a real program, but the challenge is going to do that for you in the background, so you generally don't want to do that in a challenge unless it asks you to. In this case, the code that checks your challenge answer is checking to make sure all of the code is inside a function, and the main() line is messing that up. I tried with your code and just removed that line, and it worked fine!