英语网站开发的背景,网站开发原理,宁波网站建设信任蓉胜网络好,学校网站集群建设#x1f349;CSDN小墨晓末:https://blog.csdn.net/jd1813346972 个人介绍: 研一#xff5c;统计学#xff5c;干货分享 擅长Python、Matlab、R等主流编程软件 累计十余项国家级比赛奖项#xff0c;参与研究经费10w、40w级横向 文… CSDN小墨晓末:https://blog.csdn.net/jd1813346972 个人介绍: 研一统计学干货分享 擅长Python、Matlab、R等主流编程软件 累计十余项国家级比赛奖项参与研究经费10w、40w级横向 文章目录 1 支持索引2 支持切片3 支持迭代4 支持拆包5 支持*运算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
myString123456789
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
222 支持切片 运行程序
myString123456789
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
myString123456789
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
myString123456789
a1,a2,a3,a4,a5,a6,a7,a8,a9myString
a1,a2,a3,a4,a5,a6,a7,a8,a9myList[11,12,13,14,15,16,17,18,19]
a1,a2,a3,a4,a5,a6,a7,a8,a9myList
a1,a2,a3,a4,a5,a6,a7,a8,a9myTuple(21,22,23,24,25,26,27,28,29)
a1,a2,a3,a4,a5,a6,a7,a8,a9myTuple
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
myString123456789
myString * 3 #重复运算符myList[11,12,13,14,15,16,17,18,19]
myList * 3myTuple(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
myString123456789
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)]
