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# 作者 : liuxing
# 日期 : 2017-12-25
# list用法 增删改查
names=["liuxing","wangnian","sunkang","xiaohang","zhujian","xuxian"]
#----------- 查-------------
print("names->",names)
print("names[1]->",names[1])
print("names[1:]->",names[1:])
print("names[:-1]->",names[:-1])
print("names[1:-1]->",names[1:-1])
print("names[1:-1:2]->",names[1:-1:2])
print("names[1::2]->",names[1::2])
print("names[::2]->",names[::2])
print("names[1::-1]->",names[1::-1])
#------------增---------------
names.append("ligang") #添加到列表尾部
print("append->",names)
names.insert(1,"wangqiang") #添加到任意位置
print("insert->",names)
#------------改---------------
names[0]="xiongda"
names[1:3]=["baoqiang","jiangwen"]
#------------删---------------
names.remove("sunkang")
print("remove->",names)
name=names.pop(1) #pop可以有返回值
print("pop->",names)
del names[2]
print("del->",names)
结果:
names-> [‘liuxing‘, ‘wangnian‘, ‘sunkang‘, ‘xiaohang‘, ‘zhujian‘, ‘xuxian‘]
names[1]-> wangnian
names[1:]-> [‘wangnian‘, ‘sunkang‘, ‘xiaohang‘, ‘zhujian‘, ‘xuxian‘]
names[:-1]-> [‘liuxing‘, ‘wangnian‘, ‘sunkang‘, ‘xiaohang‘, ‘zhujian‘]
names[1:-1]-> [‘wangnian‘, ‘sunkang‘, ‘xiaohang‘, ‘zhujian‘]
names[1:-1:2]-> [‘wangnian‘, ‘xiaohang‘]
names[1::2]-> [‘wangnian‘, ‘xiaohang‘, ‘xuxian‘]
names[::2]-> [‘liuxing‘, ‘sunkang‘, ‘zhujian‘]
names[1::-1]-> [‘wangnian‘, ‘liuxing‘]
append-> [‘liuxing‘, ‘wangnian‘, ‘sunkang‘, ‘xiaohang‘, ‘zhujian‘, ‘xuxian‘, ‘ligang‘]
insert-> [‘liuxing‘, ‘wangqiang‘, ‘wangnian‘, ‘sunkang‘, ‘xiaohang‘, ‘zhujian‘, ‘xuxian‘, ‘ligang‘]
remove-> [‘xiongda‘, ‘baoqiang‘, ‘jiangwen‘, ‘xiaohang‘, ‘zhujian‘, ‘xuxian‘, ‘ligang‘]
pop-> [‘xiongda‘, ‘jiangwen‘, ‘xiaohang‘, ‘zhujian‘, ‘xuxian‘, ‘ligang‘]
del-> [‘xiongda‘, ‘jiangwen‘, ‘zhujian‘, ‘xuxian‘, ‘ligang‘]