Python 嘉宾列表问题，,某书上的练习题，当作

Python 嘉宾列表问题，,某书上的练习题，当作

某书上的练习题，当作复习8

#3-5 修改嘉宾名单def alter(someone, other):    if someone in din_list:        din_list.remove(someone)        print("嘉宾 ", someone," 由于某些原因无法赴约.")        din_list.append(other)        print("新的嘉宾 ", other," 取而代之加入嘉宾名单.")    else:        print(someone," , 不在嘉宾名单中请重新确认.")#3-6 添加嘉宾def add(someone):    if someone in din_list:        print(someone,"已经存在名单中,无法重复添加.")    elif len(din_list) > 5:        print("嘉宾已满,添加失败.")        print("这是您目前的的名单:",din_list)    else:        head = int(input("将该嘉宾加入开头/中间/末尾?(1/2/0):"))        if head == 1:            din_list.insert(0, someone)            print("新的嘉宾 ",someone, " 加入名单开头.")        elif head == 2:            half = round(len(din_list) / 2)            din_list.insert(half, someone)            print("新的嘉宾 ",someone, " 加入名单中间.")        elif head == 0:            din_list.append(someone)            print("新的嘉宾 ",someone, " 加入了名单末尾.")        else:            print("请输入正确的信息.")#3-7 削减名单,只能有两个嘉宾def cut_list():    while len(din_list) > 2 :        din_list.pop()    print("削减完毕,名单最终为:",din_list)        def main():    print("这是您目前的的名单:",din_list)#3-4 晚餐初始嘉宾名单din_list = ["张三","李四","宁五"]

Python 嘉宾列表问题