Python：for循环和while循环及打印9 * 9乘法表

目录

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)

1）for循环

2）while循环

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)

要求:

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)
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)

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)

1）for循环

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

结果：
(1, 10)
1
10
(2, 20)
2
20
(3, 30)
3
30

2）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
    index2 = 0
    while index2 < len(list_data[index-1]):
        print(list_data[index-1][index2])
        index2 = index2 + 1

结果:
(1, 10)
1
10
(2, 20)
2
20
(3, 30)
3
30

2.打印9 * 9乘法表 
   1）使用双层for循环实现

for a in range(1, 10):
    print()
    for b in range(1, a + 1):
        print(a, '*', b, '=', a * b, end='t')


结果：
1 * 1 = 1	
2 * 1 = 2	2 * 2 = 4	
3 * 1 = 3	3 * 2 = 6	3 * 3 = 9	
4 * 1 = 4	4 * 2 = 8	4 * 3 = 12	4 * 4 = 16	
5 * 1 = 5	5 * 2 = 10	5 * 3 = 15	5 * 4 = 20	5 * 5 = 25	
6 * 1 = 6	6 * 2 = 12	6 * 3 = 18	6 * 4 = 24	6 * 5 = 30	6 * 6 = 36	
7 * 1 = 7	7 * 2 = 14	7 * 3 = 21	7 * 4 = 28	7 * 5 = 35	7 * 6 = 42	7 * 7 = 49	
8 * 1 = 8	8 * 2 = 16	8 * 3 = 24	8 * 4 = 32	8 * 5 = 40	8 * 6 = 48	8 * 7 = 56	8 * 8 = 64	
9 * 1 = 9	9 * 2 = 18	9 * 3 = 27	9 * 4 = 36	9 * 5 = 45	9 * 6 = 54	9 * 7 = 63	9 * 8 = 72	9 * 9 = 81	
Process finished with exit code 0

   2）使用双层while循环来实现

a = 0
while a < 9:
    print()
    a = a + 1
    b = 1
    while b < a + 1:
        print(a, '*', b, '=', a * b, end='t')
        b = b + 1

结果：
1 * 1 = 1	
2 * 1 = 2	2 * 2 = 4	
3 * 1 = 3	3 * 2 = 6	3 * 3 = 9	
4 * 1 = 4	4 * 2 = 8	4 * 3 = 12	4 * 4 = 16	
5 * 1 = 5	5 * 2 = 10	5 * 3 = 15	5 * 4 = 20	5 * 5 = 25	
6 * 1 = 6	6 * 2 = 12	6 * 3 = 18	6 * 4 = 24	6 * 5 = 30	6 * 6 = 36	
7 * 1 = 7	7 * 2 = 14	7 * 3 = 21	7 * 4 = 28	7 * 5 = 35	7 * 6 = 42	7 * 7 = 49	
8 * 1 = 8	8 * 2 = 16	8 * 3 = 24	8 * 4 = 32	8 * 5 = 40	8 * 6 = 48	8 * 7 = 56	8 * 8 = 64	
9 * 1 = 9	9 * 2 = 18	9 * 3 = 27	9 * 4 = 36	9 * 5 = 45	9 * 6 = 54	9 * 7 = 63	9 * 8 = 72	9 * 9 = 81	
Process finished with exit code 0

   3）使用单层while循环来实现(可选)

a = 1
b = 1
while b < 10:
    print(a, '*', b, '=', a * b, end='t')
    if a == b:
        a = 0
        b = b + 1
        print()
    a = a + 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