列表的增删改查以及嵌套

# li = ['alex',[1,2,3],'wusir','egon','女神','taibai']
# l1 = li[0]
# print(l1)
# l2 = li[1]
# print(l2)
# l3 = li[0:3]
# print(l3)

li = ['alex', 'wusir', 'egon', '女神', 'taibai']

# 增加 append insert
# li.append('日天')
# li.append(1)
# print(li)
# while 1:
#     username = input('>>>')
#     if username.strip().upper() == 'Q':
#         break
#     else:
#         li.append(username)
# print(li)
# li.insert(4,'春哥')
# print(li)
# li.extend('二哥')
# li.extend([1,2,3])
# print(li)

# 删
li = ['taibai', 'alex', 'wusir', 'egon', '女神', ]
# name = li.pop(1)  # 返回值
# name = li.pop()  # 默认删除最后一个
# print(name,li)

# li.remove('taibai')  # 按元素去删除
# print(li)

# li.clear()  # 清空
# print(li)

# del li
# del li[0:2]  # 切片去删除
# print(li)

# 改
# li[0] = '男兽'
# li[0] = [1,2,3]
# 切片
# li[0:3] = '云姐plfdslkmgdfjglk'
# li[0:3] = [1,2,3,'春哥','咸鱼哥']
# print(li)

# 查
# for i in li:
#     print(i)
# print(li[0:2])

# 公共方法：
# l = len(li)
# print(l)
# num = li.count('taibai')
# print(num)
# print(li.index('wusir'))
# li = [1,5,4,7,6,2,3]
# #正向排序
# # li.sort()
# # print(li)
# #反向排序
# # li.sort(reverse=True)
# # print(li)
# #反转
# li.reverse()
# print(li)


# 列表的嵌套
li = ['taibai', '武藤兰', '苑昊', ['alex', 'egon', 89], 23]

# print(li[1][1])
# name = li[0].capitalize()
# # print(name)
# li[0] = name
# li[0] = li[0].capitalize()
# li[2] = '苑日天'
# print(li[2].replace('昊','ritian'))
# li[2] = li[2].replace('昊','ritian')
# li[3][0] = li[3][0].upper()
# print(li)