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Python

Posted by David Smith
David Smith
10,577 Points

Just wanted to get peoples opinion on my finished shopping_list_2.py app.

# make a list to hold our items
shopping_list = []
# print out instructions on how to use the app
def show_list():
    index = 1
    print("Here is your list:")
    for item in shopping_list:
        print("#{} | {}".format(index, item))
        index += 1

def show_help():
    # show help
    print("What should be pick up from the shops? ")
    print("""
Enter 'DONE' to stop adding items.
Enter 'SHOW' to view your list.
Enter 'HELP' to view this message again.
Enter 'REMOVE' to view your list before removing an item.
""")

def add_to_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)))

def remove_item():
    # remove an item from our list
    show_list()
    old_item_index = int(input("Please enter a number: "))
    old_item = shopping_list[old_item_index -1]
    del shopping_list[old_item_index - 1]
    print("removed {}. Your list now has {} items".format(old_item, len(shopping_list)))
    show_list()


show_help()

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

        # quit the app
        if new_item == 'DONE':
            show_list()
            break

        elif new_item == 'REMOVE':
            remove_item()
            continue

        elif new_item == 'HELP':
            show_help()
            continue

        elif new_item == 'SHOW':
            show_list()
            continue

        add_to_list(new_item)
# print out the list

main()