#!/usr/bin/env python# -*- encoding:UTF-8 -*-li = [1, 12, 4, "age", ["fa", ["10", 13], "jfdksl"], "alex", True]# 中括号括起来# 分割每个元素# 列表中的元素可以是 任何元素# “集合”，内部放置任何东西# 索引取值print(li[3])# 切片，切片结果也是列表print(li[3:-1])# for循环# while循环for item in li: print(item)# 列表元素，可以被修改li[1] = 120print(li)li[1] = [11, 22, 33, 44]print(li)li[1:3] = [120, 90]print(li)# 删除--1del li[1]print(li)del li[2:6]print(li)# in 操作li = [1, 12, 9, "age", ["王佳", ["19", 10], "王杰"], "alex", True]v = "王佳" in liprint(v)v = "age" in liprint(v)# 操作，拿出“19”li = [1, 12, 9, "age", ["王佳", ["19", 10], "王杰"], "alex", True]v = li[4][1][0]print(v)li = [1, 12, 9, "age", ["王佳", ["19", 10], "王杰"], "alex", True]# 字符串转换列表 li = list("fjdsajkfl") ,内部使用for循环s = "jdlskajflkdsajfkl"new_li = list(s)print(new_li)# 列表转字符串li = [11, 22, 33, "123", "alex"]#不可行r = str(li)print(r)# 需要自己写for循环一个一个处理：既有数字又有字符串s = ""for i in li: s = str(i) + sprint(s)# 直接使用字符串join的方法：列表中的元素只有字符串li = ["123", "alex"]v = "".join(li)print(v)li = [11, 22, 22, 22, 22, 33, 44]# 参数# 原来值最后追加v = li.append(5)print(v) # 输出None# append加到li里li.append(6)li.append("alex")li.append([1234,2323])print(li)# 清空列表li.clear()print(li)# 复制,浅拷贝v = li.copy()print(v)# 计算元素出现的次数v = li.count(22)print(v)# 扩展原列表li = [11, 22, 22, 22, 22, 33, 44]li.extend([9898, "不得了了"])print(li)li.extend("机房的拉看数据")print(li)# 根据值获取当前值索引位置（左边优先）li = [11, 22, 22, 22, 22, 33, 44]v = li.index(22)print(v)v = li.index(22,2,5)print(v)# 在指定索引位置插入li = [11, 22, 22, 22, 22, 33, 44]li.insert(0, 99)print(li)# 删除某个值，并获取删除的值，默认删除最后一个li = [11, 22, 22, 22, 22, 33, 44]v = li.pop()print(li)print(v)# 指定索引删除li = [11, 22, 22, 22, 22, 33, 44]v = li.pop(1)print(li)print(v)# 删除列表中指定的值，左边优先li = [11, 22, 22, 22, 22, 33, 44]li.remove(22)print(li)PS：pop remove del li[0] del li[7:9] clear# 将当前列表进行反转li = [11, 22, 22, 22, 22, 33, 44]print(li)li.reverse()print(li)# 排序，默认从小到大，传参：reverse=True为从大到小li = [11, 33, 22, 44]li.sort()print(li)li.sort(reverse=True)print(li) 
