列表

s = "xieyulin"
列表 -- list -- 容器
有序、可变、支持索引
列表：存储数据，支持的数据类型很多：字符串、数字、布尔值、列表、集合、元组、字典

定义一个列表：

lst = ["yulin", 123, True, "yilin"]  # 用逗号分割的是一个元素
print(lst[0])
print(id(lst[0]))
id获取对象的内存地址

列表是可变数据：

lst[0] = "50"
print(lst)  # ['50', 123, True, 'yilin']

字符串是不可变数据：

s = "yulin"
s[0] = "x"
print(s)

增加：

lst = ["yulin", 123, True, "yilin"]
lst.append("谢宇霖")  # 追加（在列表的最后位置添加一个内容）
print(lst)  # ['yulin', 123, True, 'yilin', '谢宇霖']

lst = ["yulin", 123, True, "yilin"]
lst.insert(2,"梁10")  # 插入 以后尽量不要使用（当数据量比较大的时候会影响效率）
print(lst)  # ['yulin', 123, '梁10', True, 'yilin']

lst = ["yulin", 123, True, "yilin"]
lst.extend("可迭代的内容")  # 迭代添加
print(lst)  # ['yulin', 123, True, 'yilin', '今', '天', '好']

删除：

lst = ["yulin", 123, True, "yilin"]
lst.pop()  # 弹 默认删除最后一个
print(lst)

lst = ["yulin", 123, True, "yilin"]
lst.pop(2)  # 通过指定索引进行删除
print(lst)

lst = ["yulin", 123, True, "yilin", 123]
lst.remove(123)  # 移除  通过元素名字进行删除（只删除一个）
print(lst)

lst = ["yulin", 123, True, "yilin"]
del lst[2]  # 通过索引删除
print(lst)  # ['yulin', 123, 'yilin']

del lst[0:3]  # 通过切片删除
print(lst)  # []

del lst[0:3:2]  # 通过步长删除
print(lst)  # [123, 'yilin']

lst = ["yulin", 123, True, "yilin"]
lst.clear()  # 清空
print(lst)  # []

改：

lst = ["yulin", 123, True, "yilin"]
lst[1]="50"
print(lst)  # ['yulin', '50', True, 'yilin']

lst = ["yulin", 123, "50", True, "yilin"]
lst[1:2] = "12345"
print(lst)  # ['yulin', '1', '2', '3', '4', '5', '50', True, 'yilin']

lst = ["yulin", 123, "50", True, "yilin"]
lst[1:4] = 1,2,3,4
print(lst)  # ['yulin', 1, 2, 3, 4, 'yilin']

lst = ["yulin", 123, "50", True, "yilin"]
lst[1:4:2] = "12"  # 步长不为1的必须用一一对应，多一个不行，少一个不行
print(lst)  # ['yulin', '1', '50', '2', 'yilin']

查：for循环

lst = ["yulin", 123, "50", True, "yilin"]
for i in lst:
    print(i)

列表的嵌套：

lst = [1, "yulin", "宇霖", "50", "10", ["伊琳", ["pipi", "bubu"], "汕尾", "深圳", ["10", "广州", "可爱", ["北京"]]]]
a = lst[-1][-1][-2]
print(a)

不管什么类型进行切片的时候获取都是原数据类型