alien_0 = {'color':'blue','points':'5'}
alien_1 = {'color':'blue','points':'5'}
alien_2 = {'color':'blue','points':'5'}

aliens = []
for number in range(5):
 new_alient = {'color':'blue','points':'5','speed':'slow'}
 aliens.append(new_alient)
for i in aliens:
 print(i)
print(str(len(aliens)))

aliens = []
for number in range(5):
 new_alient = {'color':'blue','points':'5','speed':'slow'}
 aliens.append(new_alient)
for alien in aliens[:3]:
 if alien['color'] == 'blue':
  alien['color'] = 'yellow'
  alien['speen'] = 'medium'
  alien['points'] = 10
for alien in aliens:
 print(alien)

jbgz = {'origin':'天津','toppings':['鸡蛋','香肠']}
print('煎饼果子产地是：' + jbgz['origin'] + '。你可以选择添加：')
for topping in jbgz['toppings']:
 print(topping)

languages = {
 'jens':['python','java'],
 'sarah':['c','ruby'],
 'hack':['go']
}
for name,language in languages.items():
 print(name.title() + "'s favorite languages are:")
 for i in language:
  print('\t' + i.title())

users = {
 '岳云鹏':{
  '姓':'岳',
  '名':'龙刚',
  '住址':'北京'
 },
 '孟鹤堂':{
  '姓':'孟',
  '名':'祥辉',
  '住址':'北京'
 }
}
for username,user_info in users.items():
 print('\n艺名:'+ username)
 full_name = user_info['姓'] + '' + user_info['名']
 location = user_info['住址']
 print('\t姓名：' + full_name)
 print('\t住址：' + location)