input: def sum_ints(*args):
      """ Generate a Python script that takes any number of integer arguments and returns their sum.
      >>> sum_ints(3, 5, 7)
      15
      >>> sum_ints(1, 2, 3, 4)
      10
      """
output:     total = 0
      for num in args:
          if isinstance(num, int):
              total += num
      return total