PYTHON. Computes a face-to-face dictionary indicating when the polygons share at least one vertex. For example f2f = {0:{0,2}, 1:{0}, 2:{0}}

1 0 3 2 S To represent this data, the author provides a file polygons.dat containing the lines f2v = {0:{0, 5, 1}, 1:{1, 5, 3, 4}, 2:{0, 2, 5}} [(6.4,0), (20.6,12), (12.7,-15), (37,7), (37,15), (22.5, -5.2)] = 1 0 3 2 S To represent this data, the author provides a file polygons.dat containing the lines f2v = {0:{0, 5, 1}, 1:{1, 5, 3, 4}, 2:{0, 2, 5}} [(6.4,0), (20.6,12), (12.7,-15), (37,7), (37,15), (22.5, -5.2)] =