99乘法表

for i in range(1,10):
    for j in range(1,i+1):
        print("%d * %d =%2d" % (j,i,i*j),end='   ')
    print(" ")

　　

运行结果：

1 * 1 = 1    
1 * 2 = 2   2 * 2 = 4    
1 * 3 = 3   2 * 3 = 6   3 * 3 = 9    
1 * 4 = 4   2 * 4 = 8   3 * 4 =12   4 * 4 =16    
1 * 5 = 5   2 * 5 =10   3 * 5 =15   4 * 5 =20   5 * 5 =25    
1 * 6 = 6   2 * 6 =12   3 * 6 =18   4 * 6 =24   5 * 6 =30   6 * 6 =36    
1 * 7 = 7   2 * 7 =14   3 * 7 =21   4 * 7 =28   5 * 7 =35   6 * 7 =42   7 * 7 =49    
1 * 8 = 8   2 * 8 =16   3 * 8 =24   4 * 8 =32   5 * 8 =40   6 * 8 =48   7 * 8 =56   8 * 8 =64    
1 * 9 = 9   2 * 9 =18   3 * 9 =27   4 * 9 =36   5 * 9 =45   6 * 9 =54   7 * 9 =63   8 * 9 =72   9 * 9 =81