列表的常用操作

#列表常用操作

import copy

family = ['xiaochun', 'xiaomei', ['xiaohang', 'xiaofang', 'xiaoyue']]

#增
family.insert(1,'xiaoshan')
print("Add BaiShanshan to index 1:\n", family)
family.append('xiaoqian')
print('Add BaiQianqian to the last:\n', family)

#删
family.remove("xiaochun")
print("Delete xiaochun:\n", family)
del family[0]
print("Delete the first element:\n", family)
family.pop()
print("Delete the last element:\n", family)

#改
family[0] = 'xiaoshan'
print(family)

#查
print(family[0])
print(family[0:2])
print(family[2][-2:-1])

#变量的复制属于深复制,开辟一块新内存
name = 'xiaobai'
name1 = name
name = 'xiaohei'
print(name1)

#列表浅复制的3种方法  只复制一层
family1 = family[:]
family[0] = 'xiaoshan'
family[2][0] = 'xiaobai'
print(family1)
family2 = list(family)
print(family2)
family3 = copy.copy(family)
print(family3)

#深复制 完全复制 完全独立的两个列表，互相改变不影响另外一个
family4 = copy.deepcopy(family)
family[0] = 'xiaoshan'
family[2][0] = 'xiaobai'
family4[1] = 'meijie'
print(family4)
print(family)