code: def to_unicode(x):
      if isinstance(x, text_type):
          return x
      else:
          return x.decode(a_good_encoding())
  
imports: from __future__ import absolute_import, division, print_function
  import array
  import codecs
  import importlib
  import inspect
  import math
  import platform
  import re
  import sys
  import time
  from base64 import b64encode
  from collections import namedtuple
label_desc: Use image node_id 4 for calling a global function with example usage: to_unicode(x) and returns: x, x