old_contents: #!/usr/local/bin/python
  
  from libVTKCommonPython import *
  from libVTKGraphicsPython import *
  import time
  
  #catch  load vtktcl 
  # Test marching cubes speed
  #
  v16 = vtkVolume16Reader()
  v16.SetDataDimensions(64,64)
  v16.GetOutput().SetOrigin(0.0,0.0,0.0)
  v16.SetDataByteOrderToLittleEndian()
  v16.SetFilePrefix("../../../vtkdata/headsq/quarter")
  v16.SetImageRange(1,93)
  v16.SetDataSpacing(3.2,3.2,1.5)
  v16.Update()
  
  start = time.time()
  iso = vtkContourFilter()
  iso.SetInput(v16.GetOutput())
  iso.SetValue(0,1150)
  iso.Update()
  print time.time() - start
  
  #exit()
  #iren.Start()
  
new_contents: #!/usr/local/bin/python
  
  from libVTKCommonPython import *
  from libVTKGraphicsPython import *
  import time
  
  #catch  load vtktcl 
  # Test marching cubes speed
  #
  v16 = vtkVolume16Reader()
  v16.SetDataDimensions(64,64)
  v16.GetOutput().SetOrigin(0.0,0.0,0.0)
  v16.SetDataByteOrderToLittleEndian()
  v16.SetFilePrefix("../../../vtkdata/headsq/quarter")
  v16.SetImageRange(1,93)
  v16.SetDataSpacing(3.2,3.2,1.5)
  v16.Update()
  
  start = time.time()
  iso = vtkContourFilter()
  iso.SetInput(v16.GetOutput())
  iso.SetValue(0,1150)
  iso.Update()
  print "%6.2f seconds" % (time.time() - start)
  
  #exit()
  #iren.Start()
  
subject: format time a bit more clearly