code: def bit_length(n):
      return n.bit_length()
  
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 1 for calling a global function with example usage: bit_length(n) and returns: n