status = Mesh_1.AddHypothesis( Sphere_1, NETGEN_3D_Parameters_1 )
NETGEN_1D_2D_3D = Mesh_1.Tetrahedron(algo=smeshBuilder.NETGEN_1D2D3D)
isDone = Mesh_1.Compute()
-dual_Mesh_1 = smesh.CreateDualMesh( Mesh_1, 'dual_Mesh_1')
+dual_Mesh_1 = smesh.CreateDualMesh( Mesh_1, 'dual_Mesh_1', True)
assert(dual_Mesh_1.NbPolyhedrons() > 0)