code: def _re_unescape_replacement(match: Match[str]) -> str:
      group = match.group(1)
      if group[0] in _alphanum:
          raise ValueError("cannot unescape '\\\\%s'" % group[0])
      return group
  
imports: import array
  import asyncio
  import atexit
  from inspect import getfullargspec
  import os
  import re
  import typing
  import zlib
  from typing import Any, Optional, Dict, Mapping, List, Tuple, Match, Callable, Type, Sequence
label_desc: Use image node_id 5 for calling a global function with example usage: _re_unescape_replacement(match) and returns: group