def find_distance(i_): path_to_covers = '/home/anosov/data/hard_base/covers/case_%i.dump' % (i_, ) base, ext = os.path.splitext(path_to_covers) path_to_data = base + '__computing' + ext h = DataHandler(path_to_covers, path_to_data) tmp = h.distance_to_dead_ends h.dump()