old_contents: #! /usr/bin/env python
  # Last Change: Sat Jul 21 02:00 PM 2007 J
  from preprocessing import scale, nanscale, Scaler, NanScaler
  
  from numpy.testing import NumpyTest
  __all__ = ['scale', 'nanscale', 'Scaler', 'NanScaler']
  test = NumpyTest().test
  
  def test_suite(*args):
      # XXX: this is to avoid recursive call to itself. This is an horrible hack,
      # I have no idea why infinite recursion happens otherwise.
      if len(args) > 0:
          import unittest
          return unittest.TestSuite()
      return NumpyTest().test(level = -10)
  
new_contents: #! /usr/bin/env python
  # Last Change: Fri Jan 23 08:00 PM 2009 J
  from preprocessing import scale, nanscale, Scaler, NanScaler
  
  __all__ = ['scale', 'nanscale', 'Scaler', 'NanScaler']
  
  from numpy.testing import Tester
  test = Tester().test
  bench = Tester().bench
  
subject: Fix utils subpackage __init__; used old numpy testing framework.