code: def set_languages(langs=None):
      """
      Set the language set used by the global identifier.
  
      @param langs a list of language codes
      """
      global identifier
      if identifier is None:
          load_model()
  
      return identifier.set_languages(langs)
  
imports: from __future__ import print_function
  import base64
  import bz2
  import json
  import optparse
  import sys
  import logging
  import numpy
  from wsgiref.simple_server import make_server
  from wsgiref.util import shift_path_info
  from collections import defaultdict
label_desc: Use image node_id 1 for calling a global function with example usage: set_languages(langs) and returns: identifier