2D Lists & Nested Loops

number_grid = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9],
    [0],
]

for row in number_grid:
    for col in row:
        print(col)

//Output : 1
//         2
//         3
//         4
//         5
//         6
//         7
//         8
//         9
//         0