# remove some faces
faces = init_mesh.GetElementsByType( SMESH.FACE )
nb_faces = len( faces )
-rm_face = faces[ : nb_faces/2]
+rm_face = faces[ : nb_faces // 2]
init_mesh.RemoveElements( rm_face )
# restore boundary in this mesh
# remove some edges
edges = init_mesh.GetElementsByType( SMESH.EDGE )
nb_edges = len( edges )
-rm_edge = edges[ : nb_edges/2]
+rm_edge = edges[ : nb_edges // 2]
init_mesh.RemoveElements( rm_edge )