如何找到对角线上对称值的索引？

def find_diagonal_symmetric_indices(matrix):
    n = len(matrix)
    indices = []
    for i in range(n):
        for j in range(n):
            if i == j:
                indices.append((i, j))
    return indices

# 示例矩阵
matrix = [[1, 2, 3],
          [4, 5, 6],
          [7, 8, 9]]

# 调用函数查找对称值的索引
symmetric_indices = find_diagonal_symmetric_indices(matrix)

# 打印结果
for index in symmetric_indices:
    print(index)

(0, 0)
(1, 1)
(2, 2)