列表的魔法（一）

list   #   类，列表

li = [1,12,9,"age",["石振文", ["19",1], "庞麦郎"], "alex"] 通过list类创建的对象，li

#1、列表格式（中括号括起来，分割每个元素）

#2、列表中可以嵌套作任何东西（列表中的元素可是 数字，字符串，列表，布尔值..所有的都能放进去）

#3、索引取值

#4、切片，切片结果也是列表

#5、for循环

#while循环

   li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]

   print(li[3])

   print(li[3:5])

for item in li:
    print(item)

#6、索引

li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
#修改
li[1] = 120
print(li)

li[1] = [11,22,33,44]
print(li)

li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
#删除，第一种方式
del li[1]
print(li)

#7、切片
li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
#修改
li[1:3] = [120,90]
print(li)

li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
#删除
del li [2:6]
print(li)

#8、in 操作
li = [1,12,9,"age",["石振文",["19",10],"庞麦郎"],"alex",True]
v = 12 in li
print(v)
v = 120 in li
print(v)