day02_02 列表切割

# Author:Adminone

import copy

#names = "ZhangYang Guyun Xiangpeng XuLiangChen"
names = ["ZhangYang", "Guyun","XiangPeng","XuLiangchen"]
#names = ["4ZhangYang", "Guyun","XiangPeng",["alex","jack"],"ChenRonghua","XuLiangchen"]

'''
print("list-1",names)
print("list-2",names[0],names[2])
print("list-3",names[1:3])   #<==左闭右开，切片
print("list-4",names[-3:-1]) #<==左闭右开，切片
print("list-5",names[-2:])
'''

'''
#循环，步长
#print(names[0:-1:2])
#print(names[::2])
#print(names[:])
#range(1,10,2)

for i in names:
    print(i)

name2 = copy.deepcopy(names)
print(names)
print(name2)
names[2] = "向鹏"
names[3][0] ="ALEXANDER"

print(names)
print(name2)
names.append("LeiHaidong")
names.insert(1,"ChenRonghua")
names.insert(3,"Xinzhiyu")
#names[2] ="XieDi"

#print(names[0],names[2])
#print(names[1:3]) #切片
#print(names[3]) #切片
#print(names[-2:]) #切片
#print(names[0:3]) #切片
#print(names[:3]) #切片

#delete
#names.remove("ChenRonghua")
#del names[1] =names.pop(1)
#names.pop(1)
print(names)
#根据下标取值
#print(names.index("XieDi"))    #<==下标查询
#print(   names[names.index("XieDi")]   )

#成员计数
print(names.count("ChenRonghua"))
#names.clear()
#反转
names.reverse()
#按ASCII排序
names.sort()

print(names)
names2 = [1,2,3,4]
#names 扩展
names.extend(names2)

#del names2
print(names,names2)
'''
''' 
a  =[1,2,3]
b = a
a[1] =555
b = [1,555,3]