input: from typing import List
  
  def print_unique(my_list: List[str]) -> None:
      """Print unique elements from the given list.
      >>> print_unique(['apple', 'banana', 'apple', 'cherry'])
      apple
      banana
      cherry
      """
      seen = set()
      for x in my_list:
          if x not in seen:
              print(x)
              seen.add(x)
output:     seen = set()
      for x in my_list:
          if x not in seen:
              print(x)
              seen.add(x)