code: def valid_ident(s):
      m = IDENTIFIER.match(s)
      if not m:
          raise ValueError("Not a valid Python identifier: %r" % s)
      return True
  
imports: import errno
  import functools
  import io
  import logging
  import logging.handlers
  import os
  import queue
  import re
  import struct
  import threading
  import traceback
  from socketserver import ThreadingTCPServer, StreamRequestHandler
label_desc: Use image node_id 9 for calling a global function with example usage: valid_ident(s) and returns: True