func_code: def swap_unique_keys_values(d):
      store = {}
      val = []
      va = list(d.values())
      for i in va:
          val.append(i)
      print(val)
      for k, v in list(d.items()):
          if va.count(v) == 1:
              store[k] = v
      return {v: k for k, v in list(store.items())}