code: def nativestr(x):
      """Return the decoded binary string, or a string, depending on type."""
      r = x.decode("utf-8", "replace") if isinstance(x, bytes) else x
      if r == "null":
          return
      return r
  
file_path: catboost/contrib/python/redis/py3/redis/commands/helpers.py
imports: import copy
  import random
  import string
  from typing import List, Tuple
  import redis
  from redis.typing import KeysT, KeyT
label_desc: Use image node_id 2 for calling a global function with example usage: nativestr(x) and returns: r