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文章目录
- [1 支持索引](#1 支持索引)
- [2 支持切片](#2 支持切片)
- [3 支持迭代](#3 支持迭代)
- [4 支持拆包](#4 支持拆包)
- [5 支持*运算](#5 支持*运算)
- [6 通用函数](#6 通用函数)
【Python操作基础】系列------序列操作，建议收藏！
该篇文章首先利用Python展示了使用序列类型数据的相关操作，包括索引、切片、迭代、拆包、*运算、通用函数操作实例演示等。
1 支持索引
运行程序：
myString="123456789"
myString[1]
myList=[11,12,13,14,15,16,17,18,19]
myList[1]
myTuple=(21,22,23,24,25,26,27,28,29)
myTuple[1]
运行结果：
'2'
12
22
2 支持切片
运行程序：
myString="123456789"
myString[1:9:2] #步长为2切片
myList=[11,12,13,14,15,16,17,18,19]
myList[1:9:2]
myTuple=(21,22,23,24,25,26,27,28,29)
myTuple[1:9:2]
运行结果：
'2468'
[12, 14, 16, 18]
(22, 24, 26, 28)
3 支持迭代
运行程序：
from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = "all" ##执行多输出
myString="123456789"
for i in myString:
print(i,end=" ")
myList=[11,12,13,14,15,16,17,18,19]
for i in myList:
print(i,end=" ")
myTuple=(21,22,23,24,25,26,27,28,29)
for i in myTuple:
print(i,end=" ")
运行结果：
1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29
4 支持拆包
运行程序：
myString="123456789"
a1,a2,a3,a4,a5,a6,a7,a8,a9=myString
a1,a2,a3,a4,a5,a6,a7,a8,a9
myList=[11,12,13,14,15,16,17,18,19]
a1,a2,a3,a4,a5,a6,a7,a8,a9=myList
a1,a2,a3,a4,a5,a6,a7,a8,a9
myTuple=(21,22,23,24,25,26,27,28,29)
a1,a2,a3,a4,a5,a6,a7,a8,a9=myTuple
a1,a2,a3,a4,a5,a6,a7,a8,a9
运行结果：
('1', '2', '3', '4', '5', '6', '7', '8', '9')
(11, 12, 13, 14, 15, 16, 17, 18, 19)
(21, 22, 23, 24, 25, 26, 27, 28, 29)1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 21 22 23 24 25 26 27 28 29
5 支持*运算
运行程序：
myString="123456789"
myString * 3 #重复运算符
myList=[11,12,13,14,15,16,17,18,19]
myList * 3
myTuple=(21,22,23,24,25,26,27,28,29)
myTuple * 3
运行结果：
'123456789123456789123456789'
[11,
12,
13,
14,
15,
16,
17,
18,
19,
11,
12,
13,
14,
15,
16,
17,
18,
19,
11,
12,
13,
14,
15,
16,
17,
18,
19]
(21,
22,
23,
24,
25,
26,
27,
28,
29,
21,
22,
23,
24,
25,
26,
27,
28,
29,
21,
22,
23,
24,
25,
26,
27,
28,
29)
6 通用函数
运行程序：
myString="123456789"
myList=[11,12,13,14,15,16,17,18,19]
myTuple=(21,22,23,24,25,26,27,28,29)
len(myString),len(myList),len(myTuple)
sorted(myString),sorted(myList),sorted(myTuple)
(['1', '2', '3', '4', '5', '6', '7', '8', '9'],
[11, 12, 13, 14, 15, 16, 17, 18, 19],
[21, 22, 23, 24, 25, 26, 27, 28, 29])
reversed(myString),reversed(myList),reversed(myTuple)#生成迭代器
list(reversed(myString)) #强制转换值
enumerate(myString),enumerate(myList),enumerate(myTuple)
list(enumerate(myString))
[(0, '1'),
(1, '2'),
(2, '3'),
(3, '4'),
(4, '5'),
(5, '6'),
(6, '7'),
(7, '8'),
(8, '9')]
zip(myList,myTuple)
list(zip(myList,myTuple))
运行结果：
(9, 9, 9)
(['1', '2', '3', '4', '5', '6', '7', '8', '9'],
[11, 12, 13, 14, 15, 16, 17, 18, 19],
[21, 22, 23, 24, 25, 26, 27, 28, 29])
(['1', '2', '3', '4', '5', '6', '7', '8', '9'],
[11, 12, 13, 14, 15, 16, 17, 18, 19],
[21, 22, 23, 24, 25, 26, 27, 28, 29])
(<reversed at 0x2cd42810208>,
<list_reverseiterator at 0x2cd428102b0>,
<reversed at 0x2cd42810128>)
['9', '8', '7', '6', '5', '4', '3', '2', '1']
(<enumerate at 0x2cd449af048>,
<enumerate at 0x2cd449af090>,
<enumerate at 0x2cd449af288>)
[(0, '1'),
(1, '2'),
(2, '3'),
(3, '4'),
(4, '5'),
(5, '6'),
(6, '7'),
(7, '8'),
(8, '9')]
[(0, '1'),
(1, '2'),
(2, '3'),
(3, '4'),
(4, '5'),
(5, '6'),
(6, '7'),
(7, '8'),
(8, '9')]
<zip at 0x2cd44b38548>
[(11, 21),
(12, 22),
(13, 23),
(14, 24),
(15, 25),
(16, 26),
(17, 27),
(18, 28),
(19, 29)]