func_code: def swap_unique_keys_values(my_dict):
      seen = []
      unseen = []
      for key in list(my_dict.keys()):
          value = my_dict[key]
          if value in unseen:
              seen.append(value)
          else:
              unseen.append(value)
      new_dict = {v: k for k, v in list(my_dict.items()) if v not in seen}
      return new_dict