I need your help

Question

How to do that I have tried to do def main(): and than it doesn t work

shopping_list.py

This challenge is a little different. You shouldn't have to write very much code.
You probably recognize this code. It's pretty much our shopping_list_2.py from before. I want you to help me with a little refactor, though. Refactoring is when we change code to make it better, often by creating new functions.
Create a new function named main that doesn't take any arguments.
Move everything from line 22 (show_help()) and below into your new function. You shouldn't have any code that isn't inside of a function.
CAN ANYONE HELP!!!

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():
        shopping_list = []  
        def main()

        show_help()

# make a list to hold onto our items

       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()

Answer 1 · 2016-11-08T07:19:30Z

November 8, 2016 7:19am

I would like you to find what is the difference between mine and yours. Actually there is not much difference but THERE IS!!! (for Python).

Here is my code:

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)

Python syntax are so annoying if you've got some others programming language background already. Bare in mind every tabs or spaces are very important in Python (especially when you applying function() OR if OR else OR etc).

In this case, when you wrap those code from show_help() ... to function main() you have to give them all a "tab", in order to let python understand.

Let's use if statement to show some of the Syntax Style in Python.

The following three if statements are all valid style:

if 1 + 1 == 2:
     print("hello")
     print("world")

if 1 + 1 == 2:
     print("hello"); print("world")

if 1 + 1 == 2: print("hello"); print("world")

**Little Tips: You cannot mixed space or tab together in Python

Answer 2 · 2016-11-19T19:25:32Z

November 19, 2016 7:25pm

def main():

everything that goes under a function or if i should better re-phrase it, everything that goes under colon (:) should be intended. Have fun coding..

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Suleiman Abdurozikov

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I need your help

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Jackson Lai

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kachrimanidisprodromos

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