python笔记4_字典exercises

#用字典存储一个人的信息
personal_informations={
    'first_name':'li',
    'last_name':'hua',
    'age':'20',
    'city':'shanghai',
    'constellation':'pisces',
    }
print(personal_informations)
#存储多个人喜欢的数字,并单独打印键和值
favorite_number={
    'curry':3,
    'mr.chen':8,
    'flower':3,
    'lihua':5,
    'abc':7,
    }
for value in favorite_number:
    print(value+"'s favorite number is "+str(favorite_number[value]))
print(favorite_number['mr.chen'])
#遍历键
for name in favorite_number.keys():
print(name)
#遍历值
for value in favorite_number.values():
print(value)
#对已参与的人员表示感谢，邀请没参与调查的人员
personnel_list=['A','B','C','D','E','F','G']
favorite_languages={
    'A':"python",
    'D':'python',
    'B':'c',
    'C':'perl',
}
for name in favorite_languages.keys():
if name in personnel_list:
print(name.title()+", thanks you very much for your participation")
a=list(favorite_languages.keys())     #当字典中的键比较少时 可以将字典转化为列表
for value in personnel_list:
if value not in a:
    print(value.title() +',it is my pleasure if you can participation in our investigate')
#将三个人的信息字典存储在列表中，并遍历这个列表 打印
user_1={
    'first_name':'li',
    'last_name':'hua',
    'age':'20',
    'city':'shanghai',
    }
user_2={
    'firstname':'li',
'lastname':"curry",
'hometown':'San Francisco',
    }
user_3={
    'firstname':'li',
'lastname':"curry",
'hometown':'San Francisco',
}
users=[user_1,user_2,user_3]
for user in users:
print(user)