#3-1姓名
#将一些朋友的姓名存储在一个列表中，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 = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
print(names[0])
print(names[1])
print(names[2])#3-2问候语
#使用练习3-1中的列表，但不打印每个朋友的姓名，而为每人打印一条消息
#每条消息都包含相同的问候语，但抬头为相应朋友的姓名。
names = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
message0 = "Hello," + names[0] + "!"
message1 = "Hello," + names[1] + "!"
message2 = "Hello," + names[2] + "!"
print(message0)
print(message1)
print(message2)#3-3自己的列表
#想想你喜欢的通勤方式，如骑摩托车或开汽车，并创建一个包含多种通勤方式的列表
#根据该列表打印一系列有关这些通勤方式的宣言，如“I would like to own a Hondamotorcycle”
Tongqins = ['bus', 'subway', 'car', 'bike']
message = "I would like to go to school by " + Tongqins[1]
print(message)#3-4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），你会邀请哪些人？
#请创建一个列表，其中包含至少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。
people = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
message0 = people[0] + ",would you like to go to dinner with me?"
message1 = people[1] + ",would you like to go to dinner with me?"
message2 = people[2] + ",would you like to go to dinner with me?"
print(message0)
print(message1)
print(message2)#3-5修改嘉宾名单
#你刚得知有位嘉宾无法赴约，因此需要另外邀请一位嘉宾。
#以完成练习3-4时编写的程序为基础，在程序末尾添加一条print语句，指出哪位嘉宾无法赴约。
#修改嘉宾名单，将无法赴约的嘉宾的姓名替换为新邀请的嘉宾的姓名。
#再次打印一系列消息，向名单中的每位嘉宾发出邀请。
people = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
message0 = people[0] + ",would you like to go to dinner with me?"
message1 = people[1] + ",would you like to go to dinner with me?"
message2 = people[2] + ",would you like to go to dinner with me?"
print(message0)
print(message1)
print(message2)
print(people[2] + " can't attend to the dinner.")
people[2] = "Changgui"
message3 = people[2] + ",would you like to go to dinner with me?"
print(message3)#3-6添加嘉宾
#你刚找到了一个更大的餐桌，可容纳更多的嘉宾。请想想你还想邀请哪三位嘉宾。
#以完成练习3-4或练习3-5时编写的程序为基础
#在程序末尾添加一条print语句，指出你找到了一个更大的餐桌。
#使用insert()将一位新嘉宾添加到名单开头。
#使用insert()将另一位新嘉宾添加到名单中间。
#使用append()将最后一位新嘉宾添加到名单末尾。
#打印一系列消息，向名单中的每位嘉宾发出邀请。
people = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
message0 = people[0] + ",would you like to go to dinner with me?"
message1 = people[1] + ",would you like to go to dinner with me?"
message2 = people[2] + ",would you like to go to dinner with me?"
print(message0)
print(message1)
print(message2)
print("Oh, I have found a bigger desk.")
people.insert(0,"Dajiao")
people.insert(2,"Yutian")
people.append("Xiaomeng")
print(people)
for i in range(6):message = people[i] + ",would you like to go to dinner with me?"print(message)#3-7缩减名单
#你刚得知新购买的餐桌无法及时送达，因此只能邀请两位嘉宾。
#以完成练习3-6时编写的程序为基础
#在程序末尾添加一行代码，打印一条你只能邀请两位嘉宾共进晚餐的消息。
#使用pop()不断地删除名单中的嘉宾，直到只有两位嘉宾为止。
#每次从名单中弹出一位嘉宾时，都打印一条消息，让该嘉宾知悉你很抱歉，无法邀请他来共进晚餐。
#对于余下的两位嘉宾中的每一位，都打印一条消息，指出他依然在受邀人之列。
#使用del将最后两位嘉宾从名单中删除，让名单变成空的。
#打印该名单，核实程序结束时名单确实是空的。
people = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
message0 = people[0] + ",would you like to go to dinner with me?"
message1 = people[1] + ",would you like to go to dinner with me?"
message2 = people[2] + ",would you like to go to dinner with me?"
print(message0)
print(message1)
print(message2)
print("Oh, I have found a bigger desk.")
people.insert(0,"Dajiao")
people.insert(2,"Yutian")
people.append("Xiaomeng")
print(people)
for i in range(6):message = people[i] + ",would you like to go to dinner with me?"print(message)
print("I'sorrry. There is something wrong, I can only invite two person to dinner with me.")
for i in range(4):people.pop(0)print(people)
for i in range(2):message = "Hi "+people[i] + ",you are invited to dinner with me."print(message)
del people[0]
print(people)
del people[0]
print(people)#3-8放眼世界
#想出至少5个你渴望去旅游的地方,将这些地方存储在一个列表中，并确保其中的元素不是按字母顺序排列的,按原始排列顺序打印该列表
#使用sorted()按字母顺序打印这个列表，同时不要修改它。再次打印该列表，核实排列顺序未变。
#使用sorted()按与字母顺序相反的顺序打印这个列表，同时不要修改它。再次打印该列表，核实排列顺序未变。
#使用reverse()修改列表元素的排列顺序,打印该列表，核实排列顺序确实变了。
#使用reverse()再次修改列表元素的排列顺序。打印该列表，核实已恢复到原来的排列顺序。
#使用sort()修改该列表，使其元素按字母顺序排列,打印该列表，核实排列顺序确实变了。
#使用sort()修改该列表，使其元素按与字母顺序相反的顺序排列。打印该列表，核实排列顺序确实变了。
places = ["hangzhou", "yunnan", "chengdu", "dali", "xizang"]
print(places)
print(sorted(places))
print(places)
print(sorted(places,reverse=True))
print(places)
places.reverse()
print(places)
places.reverse()
print(places)
places.sort()
print(places)
places.sort(reverse=True)
print(places)#3-9晚餐嘉宾
#在完成练习3-4～练习3-7时编写的程序之一中，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。
people = ['Guangkun Xie', 'Si Zhao', 'Neng Liu']
message0 = people[0] + ",would you like to go to dinner with me?"
message1 = people[1] + ",would you like to go to dinner with me?"
message2 = people[2] + ",would you like to go to dinner with me?"
print(message0)
print(message1)
print(message2)
print("Oh, I have found a bigger desk.")
people.insert(0,"Dajiao")
people.insert(2,"Yutian")
people.append("Xiaomeng")
print(people)
for i in range(6):message = people[i] + ",would you like to go to dinner with me?"print(message)
print(len(people))