Python编程 从入门到实践 第六章习题_请参考例4-9，用嵌套的列表存储运动员

6-2 喜欢的数字：

favorite_number = {
    'alex' : 29,
    'leo' : 23,
    'mike' : 45,
    'John' : 100,
    'Phil' : 34,
}
 
'
运行
运行

输出：

Alex's favorite number is 29.
Leo's favorite number is 23.
Mike's favorite number is 45.
John's favorite number is 100.
Phil's favorite number is 34.

6-5 河流

rivers = {
    'China': 'Changjiang',
    'egypt': 'nile',
    'brazil' : 'amazon'
}
 
print("Messages:")
for river in rivers:
    print("The " + river.title() + " runs through " + rivers[river].title() + '.')
 
print("\nThe following rivers have been mentioned:")
for river in rivers.keys():
    print(river.title())
 
print("\nThe following countries have been mentioned: ")
for country in rivers.values():
    print(country.title())
'
运行
运行

输出：

Messages:
The China runs through Changjiang.
The Egypt runs through Nile.
The Brazil runs through Amazon.
 
The following rivers have been mentioned:
China
Egypt
Brazil
 
The following countries have been mentioned: 
Changjiang
Nile
Amazon

6-6 调查

favorite_language = {
    'jen': 'python',
    'sarah': 'c',
    'edward': 'ruby',
    'phil': 'python',
}
 
visited_friends = ['jen', 'sarah']
for name in favorite_language.keys():
    if name in visited_friends:
        print(name.title() + ",you participated in the survey,thank you!")
    else:
        print(name.title() + ",would you like to join us?")
'
运行
运行

输出：

Jen,you participated in the survey,thank you!
Sarah,you participated in the survey,thank you!
Edward,would you like to join us?
Phil,would you like to join us?

6-8 宠物：

pets = {
    'lili':{
        'type' : 'cat',
        'people' : 'alex',
    },
    'jordon':{
        'type': 'dog',
        'people': 'mike',
    },
    'jucy':{
        'type': 'bird',
        'people': 'leo',
    }
}
 
for name, infos in pets.items():
    print("\nName: " + name.title())
    print("\tType: " + infos['type'].title())
    print("\tHost: " + infos['people'].title())
'
运行
运行

输出：

Name: Lili
	Type: Cat
	Host: Alex
 
Name: Jordon
	Type: Dog
	Host: Mike
 
Name: Jucy
	Type: Bird
	Host: Leo

6-10 喜欢的数字：

favorite_number = {
    'jen': [23,45,34],
    'sarah': [45,78],
    'phil':[35,100,556,789],
}
for name, numbers in favorite_number.items():
    print("\n" + name.title() + "'s favorite numbers are: ")
    for number in numbers:
        print("\t" + str(number))
'
运行
运行

输出：

Jen's favorite numbers are: 
	23
	45
	34
Sarah's favorite numbers are: 
	45
	78
 
Phil's favorite numbers are: 
	35
	100
	556
	789

6-12 扩展

删去键和值：

favorite_number = {
    'jen': [23,45,34],
    'sarah': [45,78],
    'phil':[35,100,556,789],
}
 
del favorite_number['jen']
 
for name, numbers in favorite_number.items():
    print("\n" + name.title() + "'s favorite numbers are: ")
    for number in numbers:
        print("\t" + str(number))
'
运行
运行

输出：

Sarah's favorite numbers are: 
	45
	78
Phil's favorite numbers are: 
	35
	100
	556
	789