3-1 姓名:将一些朋友的姓名储存在一个列表里,并将其命名为names。依次访问该列表中的每个元素,从而将每个朋友的姓名都打印出来。
names = ["Eric","Li Hua","Han Meimei"] print(names[0]) print(names[1]) print(names[2])
3-2 嘉宾名单:如果你可以邀请任何人一起共进晚餐(无论是在世的还是故去的),你会邀请那些人?请创建一个列表,其中至少包含3个你想邀请的人;然后,使用这个列表打印消息,邀请这些人来与你共进晚餐。
names = ["Eric","Li Hua","Han Meimei"] for i in range(0,3): print("Hello "+names[i]+",May I have the pleasure of inviting you to dinner?")
3-6 添加嘉宾
names = ["Eric","Li Hua","Han Meimei"] names.insert(1,"Sam") names.append("Bill") print(names)
3-7 缩减名单
names = ["Eric","Li Hua","Han Meimei"] names.insert(1,"Sam") names.append("Bill") del names[0] names.remove("Li Hua") print(names)
3-9 晚餐嘉宾:使用len()打印一条消息,指出你邀请了多少位嘉宾来与你共进晚餐。
names = ["Eric","Li Hua","Han Meimei"] names.insert(1,"Sam") names.append("Bill") del names[0] names.remove("Li Hua") names.sort() print(names) print(len(names))