[(0, 0), (0, 2), (0, 4), (-1, -1), (0, -2), (1, -1), (-1, -3), (-1, 1), (-1,
    3), (1, 1), (1, 3), (1, 5), (2, 0), (2, 2), (3, 3), (2, 4), (3, 5), (4,
    4), (5, 3), (6, 4), (5, 5), (7, 5)]
Reading comma separated tuples from a file in python