input: def print_unique_elements(my_list: List[Any]):
      """
      Print unique elements of a given list.
  
      >>> print_unique_elements([1, 2, 2, 3, 4, 4])
      1
      2
      3
      4
      >>> print_unique_elements(['a', 'b', 'b', 'c', 'd', 'd'])
      a
      b
      c
      d
      """
output:     unique_elements = set(my_list)
      for element in unique_elements:
          print(element)