input: 
  def optimize_print_list(numbers: List[int]) -> None:
      """ Given a list of integers, optimize the printing mechanism to minimize repetition
      and improve readability.
      >>> optimize_print_list([1, 2, 3, 4, 5, 6])
      1
      2
      3
      4
      5
      6
      """
  
output:     if not numbers:
          return
      
      prev = numbers[0]
      print(prev)
      
      for num in numbers[1:]:
          if num != prev:
              print(num)
              prev = num