How to check if all the digits of a number are odd in python?

Question

I was told to solve a problem in which I would have to find out the number of 4-digit numbers which are all composed of odd digits. I tried the following python code:

Answer 1

You could try something like this

def isAllOdd(num):
  if num < 10: return num % 2 == 1;
  return isAllOdd(num % 10) and isAllOdd(int(num / 10))