Python列表基本操作

记住一句话，叫做顾首不顾尾

首先我们来定义一个列表

name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]

接下来，我们就对这个列表来进行一系列的操作

 

1、切片

取值，取第一个和第二个

print(name[0],name[1])打印结果jixuege dajiba

说明：

上面的0和1指的是小标，从左到右顺序就是从0开始一直到4

 

打印一个区间

name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]print(name[:2])打印结果['jixuege', 'dajiba'] 打印最后一个 name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]print(name[-1])打印结果youtianai 2、追加 比如说我想追加一个人进去 name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name.append("xiha")print(name)打印结果['jixuege', 'xitong', 'dajiba', 'youhua', 'boduoye', 'cangjinkong', 'youtianai', 'xiha']

这个会追加到末尾

还有一种就是插入insert

name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name.insert(2,"youhua")print(name)打印结果['jixuege', 'dajiba', 'youhua', 'boduoye', 'cangjinkong', 'youtianai']  

3、修改

直接修改即可

name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name[2]="wuming"print(name)打印结果['jixuege', 'dajiba', 'wuming', 'cangjinkong', 'youtianai']

 

4、删除

直接清空

name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name.clear()print(name)打印结果[]   删除指定元素 name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name.remove("jixuege")print(name)打印结果['dajiba', 'boduoye', 'cangjinkong', 'youtianai']

 

删除指定下标

name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]del name[2]print(name)打印结果['jixuege', 'dajiba', 'cangjinkong', 'youtianai'] 不指定下标删除最后一个 name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name.pop()print(name)打印结果['jixuege', 'dajiba', 'boduoye', 'cangjinkong'] 指定下标 name = ["jixuege","dajiba","boduoye","cangjinkong","youtianai"]name.pop(1)print(name)打印结果['jixuege', 'boduoye', 'cangjinkong', 'youtianai']

转载于:https://www.cnblogs.com/chenqizhou/p/7049178.html