如何像打印网格一样打印数组？

def print_grid(arr):
    for i in range(len(arr)):
        for j in range(len(arr[i])):
            print(arr[i][j], end=' ')
        print()

# 示例数组
grid = [[1, 2, 3],
        [4, 5, 6],
        [7, 8, 9]]

print_grid(grid)

1 2 3 
4 5 6 
7 8 9