python中单层while循环实现九九乘法表（全网首发）双层for循环和双层while循环实现九九乘法表

1.访问[(1, 10), (2, 20), (3, 30)]列表中元组的每个元素(使用for循环和while循环)

for循环

list_data = [(1, 10), (2, 20), (3, 30)]
for i in list_data:
    print(i)
    for x in i:
        print(x)
结果：
(1, 10)
1
10
(2, 20)
2
20
(3, 30)
3
30

while循环

list_data = [(1, 10), (2, 20), (3, 30)]
index = 0
while index < len(list_data):
    print(list_data[index])
    index = index + 1
    index1 = 0
    while index1 < len(list_data[index - 1]):
        print(list_data[index - 1][index1])
        index1 = index1 + 1
结果
(1, 10)
1
10
(2, 20)
2
20
(3, 30)
3
30

2.打印9 * 9乘法表 
   a.使用双层for循环实现

   b.使用双层while循环来实现

   c.使用单层while循环来实现(可选)

i = 1
j = 1
while j < 10:
    print(i, "*", j, "=", i*j, end="t")
    if i == j:
        i = 0
        j += 1
        print("n")
    i += 1
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