code: def unescape_parsable(s):
      return bytes(s.replace("\\`", "`"), "utf-8").decode(
          "unicode_escape"
      )
  
imports: from typing import Optional, Union
  import sys
  import re
  from hailtop.config import ConfigVariable, configuration_of
label_desc: Use image node_id 8 for calling a global function with example usage: unescape_parsable(s) and returns: bytes