old_contents: from __future__ import absolute_import
  
  __version__ = '2.3.0'
  __commit__ = 'e2a2977660ade83ca32db644a4a28872befffd10'
  
  from sbol.sbol import *
  import sbol.unit_tests
  
new_contents: from __future__ import absolute_import
  
  __version__ = '2.3.0'
  __commit__ = 'ed3518f7e3a71933ab2ec051814a1fed34c7a704'
  
  from sbol.sbol import *
  import sbol.unit_tests
  
subject: Prepare pySBOL post19