code: def get(self, f, pos, i):
      f.seek(pos + i * self.size)
      return self._decode(f.read(self.size))
  
imports: from array import array
  from whoosh.compat import xrange
  from whoosh.system import emptybytes
  from whoosh.system import pack_byte, unpack_byte
  from whoosh.system import pack_ushort_le, unpack_ushort_le
  from whoosh.system import pack_uint_le, unpack_uint_le
label_desc: Use image node_id 3 for calling the FixedEncoding obj's underlying member method code with example usage: obj.get(f, pos, i) and returns: self