docs: def uniq(items):
      """Remove duplicates in given list with its order kept.
  
      >>> uniq([])
      []
      >>> uniq([1, 4, 5, 1, 2, 3, 5, 10])
      [1, 4, 5, 2, 3, 10]
      """
      acc = items[:1]
      for item in items[1:]:
          if item not in acc:
              acc += [item]
  
      return acc