input: 
  def sum_ints(*args):
      """
      The function takes any number of integer arguments and returns their sum.
  
      Example:
      >>> sum_ints(3, 5, 7)
      15
      >>> sum_ints(10, -5, 2)
      7
      >>> sum_ints()
      0
      """
      total = 0
      for num in args:
          total += num
      
      return total
  
  print(sum_ints(3, 5, 7))
  
output:     total = 0
      for num in args:
          if isinstance(num, int):
              total += num
      
      return total