我有一个包含列表列表的文件,
亦即 [[39, 40, 1], [-39, -40, 1], [-39, 40, -1], [1, 41, 2], [-1, -41, 2], [-1, 41, -2], [2, 42, 3], [-2, -42, 3], [-2, 42, -3], [3, 43, 4], [-3, -43, 4], [-3, 43, -4], [4, 44, 5], [-4, -44, 5], [-4, 44, -5], [5, 45, 6], [-5, -45, 6], [-5, 45, -6], [6, 46, 7], [-6, -46, 7], [6, -46, -7], [7, 47, 8], [-7, -47, 8], [7, -47, -8], [-7, 47, -8], [8, 48, 9], …