[Matplotlib-users] bisecting triangulation

Hi,

I have set of points in a plane and make triplot:

    subplot(121)
    plot(points[:,0], points[:,1], 'o')
    title('Set of points')
    subplot(122)
    triplot(points[:,0], points[:,1])
    title('Triangulation')

result: http://i.imgur.com/1LG4fxC.png

Does anyone know how to extract just the lines describing each circumscribed circle in this example?
Perhaps by using Delaunay from scipy.spatial?

Just to inform you, I want to do this through triangulation and above example is trivial that can be solved differently, while real problem doesn't contain circles...


Thanks