text: #!/usr/bin/env python3
  
  from skimage import data, io
  import os
  import sys
  import inspect
  
  current_dir = os.path.dirname(os.path.abspath(inspect.getfile(inspect.currentframe())))
  parent_dir = os.path.dirname(current_dir)
  work_dir = os.path.dirname(parent_dir)
  sys.path.insert(0, work_dir + '/build')
  
  import pylene as pln
  
  
  if __name__ == '__main__':
  
      # GIVEN
      L = [[0, 1, 0], [1, 1, 1], [0, 1, 0]]
  
      # WHEN / THEN
      try:
          se = pln.se.mask(L)
          sys.exit(0)
      except Exception as err:
          # print(err, end='')
          # pybind11 error, we don't want to print it...
          sys.exit(1)
  