大蛇02 列表操作练习

标签：int   append   拆分   ros   默认   字符串   clean   key   asd   

# 1.append
# 功能：在列表结尾追加元素(追加一个)
    # Ex.
        # Marvel_Heros = [‘Mad Man‘,‘Mad Man‘,‘Super Man‘]
        # Marvel_Heros.append(‘X-Man‘)
        # print(Marvel_Heros)
        # 回车：[‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘]

# 2.clean
# 功能：清空列表
    # Ex.
        # Marvel_Heros = [‘Mad Man‘,‘Mad Man‘,‘Super Man‘]
        # Marvel_Heros.clear()
        # print(Marvel_Heros)
        # 回车：[]

# 3.copy
# 功能：列表拷贝
    # Ex.
        # Name = [‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘]
        # Marvel_Heros = [‘Max‘,‘Ace‘]
        # Marvel_Heros = Name.copy()
        # print(Marvel_Heros)
        # 回车：[‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘]

# 4.count
# 功能：统计列表中指定元素
    # Ex1.
        # Name = [‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘]
        # Marvel_Heros = Name.append(‘X-Man‘)
        # Count_X_Man = Name.count(‘X-Man‘)
        # print(Count_X_Man)
        # 回车：2

    # Ex2.只统计最外层元素个数
        # Name = [‘Mad Man‘, [‘X-Man‘],‘Mad Man‘, ‘Super Man‘, [‘X-Man‘]]
        # Marvel_Heros = Name.append(‘X-Man‘)
        # Count_X_Man = Name.count(‘X-Man‘)
        # print(Count_X_Man)
        # 回车：1

# 5.extend
# 功能：追加字符元素或者列表元素
    # Ex：
        # Name = [‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘]
        # Marvel_Heros = [‘Marvel‘,‘Spider Man‘]
        # Str_1 = ‘123‘
        # Str_2 = ‘A‘
        # Name.extend(Str_1) 字符串 拆分 添加
        # print(Name)
        # 回车：[‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘, ‘1‘, ‘2‘, ‘3‘]
        # Name.extend(Str_2)
        # print(Name)
        # 回车：[‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘, ‘1‘, ‘2‘, ‘3‘, ‘A‘]
        # Name.extend(Marvel_Heros)
        # print(Name)
        # 回车：[‘Mad Man‘, ‘Mad Man‘, ‘Super Man‘, ‘X-Man‘, ‘1‘, ‘2‘, ‘3‘, ‘A‘, ‘Marvel‘, ‘Spider Man‘]

# 6.index
# 功能：定位列表中某元素,返回索引，如果找到会直接报错
    # Ex.
        # name = [‘sd‘, ‘dfdf‘, ‘drer‘, [‘sddss‘, ‘sdsdsd‘]]
        # A = name.index(‘sd‘)
        # print(A)
        # 回车：0


# 7.insert
# 功能：在指定索引位置的元素前面插入新的元素
    # Ex.
        # name = [‘sd‘, ‘dfdf‘, ‘drer‘, [‘sddss‘, ‘sdsdsd‘]]
        # name.insert(1,‘asd‘)
        # print(name)
        # 回车：[‘sd‘, ‘asd‘, ‘dfdf‘, ‘drer‘, [‘sddss‘, ‘sdsdsd‘]]

# 8.pop
# 功能：删除指定索引值的元素,返回值为当前删除的元素的值。不指定索引值，默认删除最后一个元素
    # Ex.
        # name = [‘sd‘, ‘dfdf‘, ‘drer‘, [‘sddss‘, ‘sdsdsd‘]]
        # name.pop(2)
        # print(name)
        # 回车：[‘sd‘, ‘dfdf‘, [‘sddss‘, ‘sdsdsd‘]]

# 9.remove
# 功能：删除指定元素
    # Ex.
        # name = [‘sd‘, ‘dfdf‘, ‘drer‘, [‘sddss‘, ‘sdsdsd‘]]
        # name.remove(‘drer‘)
        # print(name)
        # 回车：[‘sd‘, ‘dfdf‘, [‘sddss‘, ‘sdsdsd‘]]

# 10.reverse
# 功能：用于反向列表中元素
    # Ex.
        # name = [‘sd‘, ‘dfdf‘, ‘drer‘, [‘sddss‘, ‘sdsdsd‘]]
        # name.reverse()
        # print(name)
        # 回车：[[‘sddss‘, ‘sdsdsd‘], ‘drer‘, ‘dfdf‘, ‘sd‘]

# 11.sort
# 功能：同级同类排序，对单层列表进行元素的排序
    # Ex.
        # name = [‘sd‘, ‘dfdf‘, ‘drerasd‘]
        # name.sort(key=len, reverse=False)
        # print(name)
        # 回车：[‘sd‘, ‘dfdf‘, ‘drerasd‘]

        # name = [‘sd‘, ‘dfdf‘, ‘drerasd‘]
        # name.sort(key=len, reverse=True)
        # print(name)
        # 回车：[‘drerasd‘, ‘dfdf‘, ‘sd‘]

大蛇02 列表操作练习

标签：int   append   拆分   ros   默认   字符串   clean   key   asd   

原文地址：https://www.cnblogs.com/max404/p/10586606.html