code: def _encoded(s):
      return s if isinstance(s, str) else s.encode("utf-8")
  
imports: import cStringIO
  import errno
  import io
  import logging
  import logging.handlers
  import os
  import re
  import socket
  import struct
  import sys
  import traceback
  import types
  from SocketServer import ThreadingTCPServer, StreamRequestHandler
label_desc: Use image node_id 4 for calling a global function with example usage: _encoded(s) and returns: unknown