标签：说明 span 技术分享 rem python列表 img 下标 定义 move
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‘]
标签：说明 span 技术分享 rem python列表 img 下标 定义 move
原文地址：http://www.cnblogs.com/chenqizhou/p/7049178.html
