old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  """
  .. function:: pbxplore.chains_from_files(path_list)
  
     See :func:`pbxplore.structure.chains_from_files`
  
  .. function:: pbxplore.chains_from_trajectory(trajectory, topology)
  
     See :func:`pbxplore.structure.chains_from_trajectory` 
  
  .. function:: pbxplore.assign(dihedrals)
  
     See :func:`pbxplore.assignment.assign`
  """
  
  from .structure.loader import *
  from .assignment import assign
  from . import PB
  from . import io
  from . import structure
  from . import analysis
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  """
  .. function:: pbxplore.chains_from_files(path_list)
  
     See :func:`pbxplore.structure.chains_from_files`
  
  .. function:: pbxplore.chains_from_trajectory(trajectory, topology)
  
     See :func:`pbxplore.structure.chains_from_trajectory` 
  
  .. function:: pbxplore.assign(dihedrals)
  
     See :func:`pbxplore.assignment.assign`
  """
  
  __version__ = "1.1"
  
  from .structure.loader import *
  from .assignment import assign
  from . import PB
  from . import io
  from . import structure
  from . import analysis
  
subject: Add a version number