code: def get_unique_key(str_len: int) -> str:
      """Returns a random string of length str_len.
  
      Args:
          str_len (int): Length of string.
  
      Returns:
          str: Random string
      """
      return "".join(
          [
              random.choice(string.ascii_lowercase)
              for _ in range(str_len)
          ]
      )
  
file_path: anomalib/tools/benchmarking/utils/metrics.py
imports: from __future__ import annotations
  import random
  import string
  from glob import glob
  from pathlib import Path
  import pandas
  import wandb
  from comet_ml import Experiment
  from torch.utils.tensorboard.writer import SummaryWriter
label_desc: Use image node_id 3 for calling a global function with example usage: get_unique_key(str_len) and returns: str