demo_mesh_generation.py fails

[Jaroslav Hron]

Hi, should the demo dolfin/demo/undocumented/mesh-generation/python/demo_mesh_generation.py work in fenics 1.2.0?

It seems to fail with following error:

Traceback (most recent call last):
  File "demo_mesh_generation.py", line 62, in <module>
    PolyhedralMeshGenerator.generate(mesh, face_vertices, faces, 0.05)
  File "/usr/local/pkg/fenics/1.2.0/gnu/lib/python2.7/site-packages/dolfin/cpp/mesh.py", line 7717, in generate
    return _mesh.PolyhedralMeshGenerator_generate(*args)
TypeError: in method 'PolyhedralMeshGenerator_generate', argument 3 of type 'std::vector< std::vector< std::size_t > > const &'

[Prof Garth Wells]

This has been fixed in the development version.