二维数组（N*N），沿对角线方向，从右上角打印到左下角

i = 0

def getNum():
    global i
    i = i + 1
    return i




def genMatrix(rows, cols):
    matrix = [[getNum() for col in range(cols)] for row in range(rows)]
    #for i in range(rows):
    #    for j in range(cols):
    #        print matrix[i][j],
    #    print '\n'
    return matrix




def printMatrix(matrix):
    size = len(matrix)
    length = 2 * size - 1
    for k in range(0, length):
        for i in range(0, size):
            for j in range(0, size):
                if j-i == size - 1 - k:
                    print matrix[i][j],
        print ''




if __name__ == '__main__':
    matrix = genMatrix(4, 4)
    printMatrix(matrix)