Python 九九乘法表：使用 while 和 for 循环

使用 while 循环和 for 循环都可以输出九九乘法口诀表。以下是使用 while 循环和 for 循环分别输出九九乘法口诀表的示例代码：

使用 while 循环：

i = 1

while i <= 9:
    j = 1
    while j <= i:
        print(f'{j} * {i} = {i*j}', end='\t')
        j += 1
    print()
    i += 1

使用 for 循环：

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

输出结果如下：

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	

以上是输出九九乘法口诀表的示例代码和结果。你可以根据需要进行相应的调整。