1.在列表中嵌套字典

字典列表：将字典存储在列表中

alien_0={
    'color':'green',
    'points':5
    }
alien_1={
    'color':'yellow',
    'points':15
    }
alien_2={
    'color':'black',
    'points':10
    }
aliens=[alien_0,alien_1,alien_2]
for alien in aliens:
    print(alien)

2.在字典中嵌套列表

将列表存储在字典中
每当需要在字典中讲一个键关联到多个值时，都可以在字典中嵌套一个列表

favorite_languages={
    'jen':['python','ruby'],
    #或者'sarah':'c';
    'sarah':['c'],
    'edward':['ruby','go'],
    'phil':['python','haskell'],
    }
for name,languages in favorite_languages.items():
    if len(languages)>1:
        print("\n"+name.title()+"'s favorite language are:")
        for language in languages:
            print("\t"+language.title())
    else:
        print("\n"+name.title()+"'s favorite language is:")
        for language in languages:
            print("\t"+language.title())

3.字典中嵌套字典

在字典中存储列表

一般字典中的结构最好相同，处理比较容易，如果键不同，可能处理更复杂

users={
    'aeinstein':{
        'first':'albert',
        'last':'einstein',
        'location':'princeton'
        },
    'mcurie':{
         'first':'marie',
        'last':'curie',
        'location':'paris'
        }
    }
for username,user_info in users.items():
    print("\nusername:"+username)
    full_name=user_info['first']+" "+user_info['last']
    location=user_info['location']
    print("\tfullname:"+full_name.title())
    print("\tlocation:"+location.title())