old_contents: from __future__ import absolute_import
  
  from .filterbank import Filterbank, read_header, fix_header
  from .guppi import GuppiRaw
  from . import utils
  from . import fil2hdf
  from . import fil2h5
  from . import h52fil
  from . import gup2hdf
  from . import waterfall
  from . import file_wrapper
  from . import match_fils
  
  try:
      from .waterfall import Waterfall
  except ImportError:
      pass
  
new_contents: from __future__ import absolute_import
  
  from .filterbank import Filterbank, read_header, fix_header
  from .guppi import GuppiRaw
  from . import utils
  
  try:
      from . import fil2hdf
      from . import fil2h5
      from . import h52fil
      from . import gup2hdf
  except:
      print("Warning: Cannot import HDF5 utilities")
      
  from . import waterfall
  from . import file_wrapper
  from . import match_fils
  
  try:
      from .waterfall import Waterfall
  except ImportError:
      pass
  
subject: Change __init__.py for h5py ImportError catch