type(obj) = <class 'sage.homology.examples.SimplicialSurface'>
version = 4.0.alpha0
obj =
'Simplicial complex with vertex set (0, 1, 2, 3) and facets {(0, 2, 3), (0, 1, 2), (1, 2, 3), (0, 1, 3)}'
