input: def swap_variables(x: int, y: int) -> tuple:
      """ Swap the values of two given variables and return the swapped values as a tuple.
      >>> swap_variables(5, 10)
      (10, 5)
      >>> swap_variables(0, 0)
      (0, 0)
      """
  
output:     temp = x
      x = y
      y = temp
      return (x, y)