code: def get_only_unique_item(items):
      item_set = set(items)
      if len(item_set) != 1:
          raise RuntimeError(
              f"expected there to be only one unique element in {items}"
          )
      (unique_item,) = item_set
  
      return unique_item
  
imports: from collections.abc import Iterable
  from deepspeed.moe.utils import is_moe_param
  import os
  import psutil
  import gc
  from math import sqrt
  from math import floor
  from bisect import bisect_left
  import torch
  from torch import inf
  from deepspeed import comm
  from deepspeed.utils import groups, logger
  from deepspeed.runtime.constants import PIPE_REPLICATED
  from numpy import prod
label_desc: Use image node_id 23 for calling a global function with example usage: get_only_unique_item(items) and returns: unique_item