python学习笔记——嵌套

列表里面嵌字典 （存储一个种类的不同信息）

alien_0={'color':'green','point':5}
alien_1={'color':'yellow','point':10}
alien_2={'color':'red','point':15}

aliens=[alien_0,alien_1,alien_2]

for alien in aliens:
    print(alien)
#创建一个空列表
print("...")
for alien_number in range(30):
    new_alien={'color':'green','points':5,'speed':'slow'}
    aliens.append(new_alien)
  
for alien in aliens[0:3]:
    if alien['color']=='green':
        alien['color']='yellow'
        alien['speed']='medium'
        alien['points']=10
    elif alien['color']=='yellow':
        alien['color']='red'
        alien['speed']='fast'
        alien['points']=15
        
for alien in aliens[:5]:
    print(alien)
print("...")

print("Tatal number of aliens:"+str(len(aliens)))#查看创建了多少个外星人

字典嵌列表（用于字典的里键对应多个值（1对n））

favorite_languages={
        'jen':['python','ruby'],
        'sarah':['C'],
        'edward':['ruby','go'],
        'phil':['python','haskell'],
        }

for name,languages in favorite_languages.items():
    print("\n"+name.title()+"'s favorite languages are:")
    for language in languages:
        print('\t'+language.title())

 字典嵌字典

for username,user_info in users.items():
    print("\nUsername:"+username)
    full_name=user_info['first']+" "+user_info['last']
    location=user_info['location']
    
    print("\tFull name:"+full_name.title())
    print("\tLocation:"+location.title())