code: def test_bytescale_low_greaterthan_high(self):
      with assert_raises(ValueError):
          with suppress_warnings() as sup:
              sup.filter(DeprecationWarning)
              misc.bytescale(np.arange(3), low=10, high=5)
  
imports: from __future__ import division, print_function, absolute_import
  import os.path
  import tempfile
  import shutil
  import numpy
  import glob
  import pytest
  from pytest import raises
  from numpy.testing import assert_equal, assert_allclose, assert_array_equal, assert_
  from scipy._lib._numpy_compat import suppress_warnings
  from scipy import misc
  from numpy.ma.testutils import assert_mask_equal
label_desc: Use image node_id 11 for calling the TestPILUtil obj's underlying member method code with example usage: obj.test_bytescale_low_greaterthan_high() without return types