如何遍历列表中的列？

my_list = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

for row in my_list:
    for column in row:
        print(column)

int[][] myArray = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};

for (int i = 0; i < myArray.length; i++) {
    for (int j = 0; j < myArray[i].length; j++) {
        System.out.println(myArray[i][j]);
    }
}

let myArray = [[1, 2, 3], [4, 5, 6], [7, 8, 9]];

for (let i = 0; i < myArray.length; i++) {
    for (let j = 0; j < myArray[i].length; j++) {
        console.log(myArray[i][j]);
    }
}