It seems that my code contains an infinite loop which I have failed to recognize for a whole afternoon.
I have already went through other discussion about this task, so I am not looking for a solution to get to the next session. If anyone has an idea about where I failed please don't hesitate to share your insight. Thank you.
def digit_sum(n): digitsum = 0 p = 1 while n % (10**p) > 0: digitsum += (n % (10**p) - n % (10**(p-1))) / 10**(p-1) p += 1 return digitsum