python第三章课后题_《Python编程》第三章部分课后练习题

3-4 嘉宾名单：

代码：

#3-4 嘉宾名单

members = ['Kobe Bryant', 'Anthony Davis', 'Michael Jordan']

members.append('LeBron James')

for member in members:

message = member + ', are you willing to have dinner with me ?'

print(message)

输出：

Kobe Bryant, are you willing to have dinner with me ?

Anthony Davis, are you willing to have dinner with me ?

Michael Jordan, are you willing to have dinner with me ?

LeBron James, are you willing to have dinner with me ?

3-5 修改嘉宾名单：

代码：

#3-5 修改嘉宾名单

members = ['Kobe Bryant', 'Anthony Davis', 'Michael Jordan']

members.append('LeBron James')

for member in members:

message = member + ', are you willing to have dinner with me?'

print(message)

#缺席

message = 'Michael Jordan says he is very sorry about his absence!'

print(message)

members.remove('Michael Jordan')

members.append('James Harden')

for member in members:

message = member + ', are you willing to have dinner with me?'

print(message)

输出：

Michael Jordan says he is very sorry about his absence!

Kobe Bryant, are you willing to have dinner with me?

Anthony Davis, are you willing to have dinner with me?

LeBron James, are you willing to have dinner with me?

James Harden, are you willing to have dinner with me?

3-6 添加嘉宾：

代码：

#3-6 添加嘉宾

members = ['Kobe Bryant', 'Anthony Davis', 'Michael Jordan']

members.append('LeBron James')

for member in members:

message = member + ', are you willing to have dinner with me? '

print(message)

#缺席

message = '\nMichael Jordan says he is very sorry about his absence! '

print(message)

members.remove('Michael Jordan')

members.append('James Harden')

for member in members:

message = member + ', are you willing to have dinner with me? '

print(message)

#大餐桌

message = '\nThere is a good news. I find a bigger table! '

print(message)

members.insert(0, 'Kyrie Irving')

mid = int(len(members)/2)

members.insert(mid, 'Stephen Curry')

members.append('Kevin Durant')

for member in members:

message = member + ', are you willing to have dinner with me? '

print(message)

输出：

There is a good news. I find a bigger table!

Kyrie Irving, are you willing to have dinner with me?

Kobe Bryant, are you willing to have dinner with me?

Stephen Curry, are you willing to have dinner with me?

Anthony Davis, are you willing to have dinner with me?

LeBron James, are you willing to have dinner with me?

James Harden, are you willing to have dinner with me?

Kevin Durant, are you willing to have dinner with me?

3-7 缩减名单：

代码：

#3-7 缩减名单

members = ['Kobe Bryant', 'Anthony Davis', 'Michael Jordan']

members.append('LeBron James')

for member in members:

message = member + ', are you willing to have dinner with me? '

print(message)

#缺席

message = '\nMichael Jordan says he is very sorry about his absence! '

print(message)

members.remove('Michael Jordan')

members.append('James Harden')

for member in members:

message = member + ', are you willing to have dinner with me? '

print(message)

#大餐桌

message = '\nThere is a good news. I find a bigger table! '

print(message)

members.insert(0, 'Kyrie Irving')

mid = int(len(members)/2)

members.insert(mid, 'Stephen Curry')

members.append('Kevin Durant')

for member in members:

message = member + ', are you willing to have dinner with me? '

print(message)

#无法送达

message = '\nHow bad it is, The table can not be delivered in time! '

message += '\nSo only two lucky members can enjoy the dinner! '

print(message)

while len(members) > 2:

member = members.pop()

message = member + ", I am sorry i can't invite you. "

print(message)

for member in members:

message = member + ', you are still in my invitation list.'

print(message)

while members:

del members[0]

print(members)

输出：

How bad it is, The table can not be delivered in time!

So only two lucky members can enjoy the dinner!

Kevin Durant, I am sorry i can't invite you.

James Harden, I am sorry i can't invite you.

LeBron James, I am sorry i can't invite you.

Anthony Davis, I am sorry i can't invite you.

Stephen Curry, I am sorry i can't invite you.

Kyrie Irving, you are still in my invitation list.

Kobe Bryant, you are still in my invitation list.

[]

3-8 放眼世界：

代码：

#3-8 放眼世界

places = ['Croatia', 'Greenville', 'Grenada', 'Mexico']

places.append('Walla Walla Valley')

places.append('Uzbekistan')

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)

输出：

['Croatia', 'Greenville', 'Grenada', 'Mexico', 'Walla Walla Valley', 'Uzbekistan']

['Croatia', 'Greenville', 'Grenada', 'Mexico', 'Uzbekistan', 'Walla Walla Valley']

['Croatia', 'Greenville', 'Grenada', 'Mexico', 'Walla Walla Valley', 'Uzbekistan']

['Walla Walla Valley', 'Uzbekistan', 'Mexico', 'Grenada', 'Greenville', 'Croatia']

['Croatia', 'Greenville', 'Grenada', 'Mexico', 'Walla Walla Valley', 'Uzbekistan']

['Uzbekistan', 'Walla Walla Valley', 'Mexico', 'Grenada', 'Greenville', 'Croatia']

['Croatia', 'Greenville', 'Grenada', 'Mexico', 'Walla Walla Valley', 'Uzbekistan']

['Croatia', 'Greenville', 'Grenada', 'Mexico', 'Uzbekistan', 'Walla Walla Valley']

['Walla Walla Valley', 'Uzbekistan', 'Mexico', 'Grenada', 'Greenville', 'Croatia']