code: def max_value(bitcount):
      """Returns the maximum (unsigned) integer representable in the given number
      of bits.
      """
  
      return ~(~0 << bitcount)
  
imports: import math, struct
  from array import array
  from bisect import bisect_left
  from struct import pack, unpack
  from whoosh.compat import b, long_type
  from whoosh.system import pack_byte, unpack_byte, pack_ushort, unpack_ushort
  from whoosh.system import pack_int, unpack_int, pack_uint, unpack_uint
  from whoosh.system import pack_long, unpack_long, pack_ulong, unpack_ulong
  from whoosh.system import pack_float, unpack_float, pack_double, unpack_double
label_desc: Use image node_id 3 for calling a global function with example usage: max_value(bitcount) and returns: unknown