2.19

 

 

 

 

python_vocabulary = {'import this': 'Zen of python',
                     'insert': '插入',
                     'range': '范围',
                     'popped': '术语弹出'
                     }
print(python_vocabulary)

for vocabulary, means in python_vocabulary.items():  # 第二部分包含字典名和方法items()
    print('\nvocabulary: ' + vocabulary)
    print('means: ' + means)

python_vocabulary['append'] = '向列表中添加元素'
python_vocabulary['set()'] = '剔除重复的值'
python_vocabulary['keys()'] = '字典键'
python_vocabulary['values()'] = '字典值'
python_vocabulary['items()'] = '无法描述（重点）'

for key,values in python_vocabulary.items():
    print('\nVocabulary: ' + key)
    print('\nmeans: ' + values)

rivars = {'China':'changjiang','nile':'egypt','brazil':'amazon'}
for country,rivar in rivars.items():
    print('The '+ rivar.title() + ' runs through ' + country.title() + '.')

# for country in rivars.items(): #.keys()与.value() 位置和输入错误 下文订正
#     print (rivars.key())
# for rivar in rivars.items():
#     print (rivars.value())
for country in rivars.keys():
    print (country.title())
for rivar in rivars.values():
    print (rivar.title()) #.title()少输入括号后 显示异常
# <built-in method title of str object at 0x029E5640>
# <built-in method title of str object at 0x029E57A0>
# <built-in method title of str object at 0x029E4F80>
# <built-in method title of str object at 0x02A79B60>
# <built-in method title of str object at 0x02A57280>
# <built-in method title of str object at 0x025CCFC0>

aliens = []
for alien_number in range(30):
    new_alien = {'color': 'green', 'points': 5, 'speed': 'slow'}
    aliens.append(new_alien)
for alien in aliens[:5]:
    print(alien)
print('...')
print(str(len(aliens)))

for alien in aliens[0:3]:  # 切片语法还未熟练
    if alien['color'] == 'green':
        alien['color'] = 'yellow'
        alien['speed'] == 'medium'
        alien['points'] = 10

for alien in aliens[:5]:
    print(alien)  # 多打s则变为打印列表

favorite_languages = {
    'jen': ['python', 'ruby'],
    'sarah': ['c'],
    'edward': ['ruby', 'go'],
    'phil': ['python', 'haskell'],
}
for name, languages in favorite_languages.items():
    if len(languages) >= 2:
        print("\n" + name.title() + "'s favorite languages are:")
    else:
        print("\n" + name.title() + "'s favorite languages is:")
    for language in languages:#此处for循环不可与上个for循环缩进相同
        print("\t" + language.title())

练习6-1  6-1 人 ：使用一个字典来存储一个熟人的信息，包括名、姓、年龄和居住的城市。该字典应包含键
first_name 、last_name 、age 和city 。将存储在该字典中的每项信息都打印出来。

shiitakeimoto = {'first_name': 'ying', 'last_name': 'ying', 'age': 22, 'city': 'fuzhou'}
ergou = {'first_name': 'lin', 'last_name': 'zhu', 'age': 24, 'city': 'shanghai'}
erzi = {'first_name': 'junqin', 'last_name': 'cai', 'age': 25, 'city': 'kunming'}

people = [shiitakeimoto, ergou, erzi]
for name in people:
    print(name)
#错误例子
# nike = {'zhonglei':'taidi','zhuern':'ergou'}
# doudou = {'zhonglei':'yingduan','zhuren':'momoe'}
# pingtou = {'zhonglei':'shuilan','zhuren':'erzi'}

pets = {'nike': {'zhonglei': 'taidi', 'zhuern': 'ergou'}, 'doudou': {'zhonglei': 'yingduan', 'zhuren': 'momoe'},
        'pingtou': {'zhonglei': 'shuilan', 'zhuren': 'erzi'}, }

# pets = {nike,doudou,pingtou}
print(pets)

users = {'aeinstein': {'first': 'albert', 'last': 'einstein', 'location': 'princeton', },
         'mcurie': {'first': 'marie', 'last': 'curie', 'location': 'paris', }, }
print(users)

favorite_places = {'ergou':['suzhou','shanxi','shenzhen'],'erzi':['osaka','kyoto'],'momoe':['liancang']}
favorite_places['shiitakeimoto'] = ['taiba','suizokukan','jinnjya']
for name,places in favorite_places.items():
    if len(places) >= 2:
        print(name.title() + '\'s favorite places are:' )
    else:
        print(name.title() + '\'s favorite place')
    for place in places:
            print('\t' + place.title())


message = input("Tell me something, and I will repeat it back to you: ")
print(message)