func_code: def swap_unique_keys_values(d):
      keys = []
      values = []
      dict_keys = []
      dict_values = []
      dump = []
      for k, v in list(d.items()):
          keys.append(k)
          values.append(v)
      for num in values:
          test = num
          values = values[1:]
          if test in values:
              dump.append(test)
          elif test not in values and test not in dump:
              dict_keys.append(test)
              dict_values.append(keys[0])
          keys = keys[1:]
      print(dict_keys)
      print(dict_values)
      d = {}
      i = 0
      while i < len(dict_keys):
          d[dict_keys[i]] = dict_values[i]
          i = i + 1
      return d