python输出三角形式的九九乘法表

以下是Python程序输出的三角形式九九乘法表：

for i in range(1, 10):
    for j in range(1, i+1):
        print(j, 'x', i, '=', i*j, '\t', end='')
    print()

输出结果如下：

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

可以看到，每一行都比上一行多一个乘法式，最后形成一个三角形状的乘法表。