# make the mesh quadratic
mesh.ConvertToQuadratic()
# make some elements bi-quadratic
-for face in SubFaceL[: len(SubFaceL)/2]:
+for face in SubFaceL[: len(SubFaceL) // 2]:
mesh.ConvertToQuadratic( theSubMesh=mesh.Group( face ), theToBiQuad=True )
# get triangles with 7 nodes