# remove some volumes to have volumes with bare borders
mesh.RemoveElements( mesh.GetElementsByType(VOLUME)[0:5] )
# get all volumes with bare borders
# remove some volumes to have volumes with bare borders
mesh.RemoveElements( mesh.GetElementsByType(VOLUME)[0:5] )
# get all volumes with bare borders
ids = mesh.GetIdsFromFilter(filter)
print "Volumes with bare borders:", ids
ids = mesh.GetIdsFromFilter(filter)
print "Volumes with bare borders:", ids