i am having an impossible time trying to figure out this traceback error:

line 81 in <module> add_to_list(new_item) line 31, in add_to_list position = abs(int(position))

UnboundLocalError: local variable 'position' referenced before assignment.

import os

shopping_list = []

Clear screen between states

def clear_screen(): os.system("cls" if os.name == "nt" else "clear")

def show_help(): clear_screen() 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. Enter 'REMOVE' to delete an item from your list. """)

def add_to_list(item): show_list() if len(shopping_list): postion = input("Where should i add {} on the list?\n" "Press ENTER to add to the end of the list\n" "> ".format(item)) else: position = 0

try:
    position = abs(int(position))
except ValueError:
    position = None
if position is not None:
    shopping_list.insert(position-1, item)
else:
    shopping_list.append(new_item)    

show_list()

def show_list(): clear_screen()

print("Here's your list:")

index=1
for item in shopping_list:
    print("{}, {}".format(index, item))
    index +=1

print("-"*10)

def remove_from_list(): show_list() what_to_remove = input("What would you like to remove?\n") try: shopping_list.remove(what_to_remove) except ValueError: pass show_list()

show_help()

while True: new_item = input("> ")

if new_item.upper() == 'DONE':
    break
elif new_item.upper() == 'HELP':
    show_help()
    continue
elif new_item.upper() == 'SHOW':
    show_list()
    continue
elif new_item.upper() == 'REMOVE':
    remove_from_list()
    continue
else:
    add_to_list(new_item)

show_list()