This is my code:
def digit_sum(n) : str_n = str(n) lst_n = list(str_n) for i in lst_n: numbers=  integer = int(lst_n[i]) numbers.append(integer) return sum(numbers)
error message says:
Oops, try again. Does your digit_sum function take exactly one argument (a positive integer)? Your code threw a "list indices must be integers, not str" error.
I thought I have successfully changed string in to list of integers, but the error messages says that I didn't.
I am so stuck. can anybody help me out with this?
Replace this line with your code.