code: def _discreet(length):
      return byte_to_length(length_to_byte(length))
  
file_path: whoosh/tests/test_quality.py
imports: from __future__ import with_statement
  import random
  from whoosh import fields, matching, scoring
  from whoosh.compat import u, xrange
  from whoosh.filedb.filestore import RamStorage
  from whoosh.util.numeric import length_to_byte, byte_to_length
label_desc: Use image node_id 1 for calling a global function with example usage: _discreet(length) and returns: byte_to_length