Library for shape or scene management?

[Buck Golemon]

I've posted the question more thoroughly on stackoverflow[1], but is there any library that's commonly used with pyglet to provide programming abstractions of Shapes and Scenes? I can certainly do it myself, but I imagine that making optimal use of the pyglet batch system under the covers could get fiddly.

[1] http://stackoverflow.com/questions/14007509/shape-or-scene-management-for-pyglet