python从入门到实践习题_Python编程：从入门到实践（3.2章练习题）

3-4 嘉宾名单

guests = ['jack','john','ocean']

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

3-5 修改嘉宾名单

guests = ['jack','john','ocean']

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print(guests[2]+" , I'm very sorry you can't come to my dinner !")

guests[2] = 'sunny'

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

3-6 添加嘉宾

guests = ['jack','john','ocean']

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print(guests[2]+" , I'm very sorry you can't come to my dinner !")

guests[2] = 'sunny'

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print("Dear friends , I found a bigger table! So , I would like to invite friends to our dinner party !")

guests.insert() = (0,'lee')

guests.insert() = (2,'evil')

guests.append() = 'ben'

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[3]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[4]+" ! Can you have dinner with me this evening ?")

3-7 缩减名单

guests = ['jack','john','ocean']

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print(guests[2]+" , I'm very sorry you can't come to my dinner !")

guests[2] = 'sunny'

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print("Dear friends , I found a bigger table! So , I would like to invite friends to our dinner party !")

guests.insert() = (0,'lee')

guests.insert() = (2,'evil')

guests.append() = 'ben'

print("Hello , "+guests[0]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[1]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[2]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[3]+" ! Can you have dinner with me this evening ?")

print("Hello , "+guests[4]+" ! Can you have dinner with me this evening ?")

print("Dear friends, I just received the bad news that the new table I bought could not be delivered in time,so I can only

invite two friends to my dinner party! ")

guest = guests.pop()

print("I am very sorry,"+guest+"!")

guest = guests.pop()

print("I am very sorry,"+guest+"!")

guest = guests.pop()

print("I am very sorry,"+guest+"!")

print(guests[0]+", you are still the guest of my dinner party. I hope we can have a good evening together!")

print(guests[1]+", you are still the guest of my dinner party. I hope we can have a good evening together!")

del guests[0]

del guests[0]

print(guests)