func_code: def swap_unique_keys_values(d):
      new_d = {}
      vv = []
      for k in d:
          vv.append(d[k])
      for num in vv:
          for k in d:
              if not vv.count(num) > 1:
                  if d[k] == num:
                      new_d[num] = k
      return new_d