old_contents: # coding: utf-8
  # Copyright (c) Pymatgen Development Team.
  # Distributed under the terms of the MIT License.
  
  try:
    import linear_assignment
  except ImportError:
    from . import linear_assignment_python as linear_assignment  # use pure-python fallback
  
new_contents: # coding: utf-8
  # Copyright (c) Pymatgen Development Team.
  # Distributed under the terms of the MIT License.
  
  try:
    from . import linear_assignment
  except ImportError:
    from . import linear_assignment_python as linear_assignment  # use pure-python fallback
  
subject: Fix linear assignment import.