old_contents: from __future__ import absolute_import
  from .summarize_opsim import *
  from . import summarize_opsim
  from . import simlib
  from .version import __VERSION__
  from .trig import *
  from .healpix import *
  from .tessellations import *
  from .opsim_out import *
  from .healpixTiles import *
  from .visualization import *
  
new_contents: from __future__ import absolute_import
  from .summarize_opsim import *
  from . import summarize_opsim
  from . import simlib
  from .version import __VERSION__
  from .trig import *
  from .healpix import *
  from .tessellations import *
  from .opsim_out import *
  from .healpixTiles import *
  try:
      from .visualization import *
  except:
      print('Visulization functions based on maps will not work')
      pass
  
subject: Put try except block around visualization import involving basemap modified: opsimsummary/__init__.py