python第六章课后题答案_python从入门到编程习题第六章

#6-1 人

a = {"first_name":"xiao","last_name":"ming","age":19,"city":"shanghai"}

print(a)

#6-2喜欢的数字

friends_num = {"xiaoming":1,"xiaohong":9,"xiaozhang":8,"xiaoli":3}

for k,v in favorite_nums.items():

print(k ," favorite number is ",v)

#6-3词汇表

tables = {

"del" : "删除元素",

"insert": "指定位置增加元素",

"pop":"删除元素并返回删除的元素",

"append":"插入元素"

}

for k,v in tables.items():

print(k +":"+ v + "\n")

#6-4词汇表2

tables = {

"del" : "删除指定位置的元素",

"insert": "指定位置增加元素",

"pop":"删除元素并返回删除的元素",

"append":"插入元素"

}

tables["expend"] = "增加一个序列的多个元素"

tables["remove"] ="删除第一个遇到的指定值"

tables["sort"] = "排序且改变原数据结构"

tables["sorted"] ="排序且不改变原结构"

tables["reverse"] = "反转且改变原数据结构"

for k,v in tables.items():

print(k +":"+ v + "\n")

#6-5河流

rivers = {"Huanghe":"ShanXi","Changjiang":"QingHai","Songhuajiang":"HeiLongJiang"}

for k,v in rivers.items():

print("The " +k + " runs through " + v )

for k in rivers.keys():

print(k)

for v in rivers.values():

print(v)

#6-6调查

favorite_languages = {

'jen':'python',

'sarah':'c',

'edward':'ruby',

'phil':'python'

}

names = ["xiaofang","xiaoyang","jen","sarah","xiaozhang"]

for name in names:

if name in favorite_languages:

print("Hi, " + name + " Thanks for you participation！")

else:

print("Hi, "+ name + " We are invite you to research!")

#6-7人

a = {"first_name":"xiao",

"last_name":"ming",

"age":19,

"city":"shanghai"}

b = {"first_name":"xiao",

"last_name":"gang",

"age":18,

"city":"beijing"}

c = {"first_name":"xiao",

"last_name":"hong",

"age":21,

"city":"guangzhou"}

peoples = [a,b,c]

for people in peoples:

print(people)

#6-8宠物

pet1 ={"name":"huahua","type":"cat","pet owners":"xiaohong"}

pet2 = {"name":"dagou","type":"dog","pet owners":"xiaozhang"}

pet3 ={"name":"shuashua","type":"cat","pet owners":"xiaowang"}

pet4 = {"name":"lulu","type":"dog","pet owners":"xiaozhao"}

pets = [pet1,pet2,pet3,pet4]

for pet in pets:

print(pet)

#6-9喜欢的地方

favorite_places={"xiaogang":["shanghai","xian","hangzhou"],

"xiaoming":["beijing","shanxi","nanjing"],

"xiaohong":["shenzhen","hainan","shandong"]}

for name,place in favorite_places.items():

print("\n"+name+ " Favorite Places are :\n" +"\n".join(place))

#6-10喜欢的数字

friends_num = {"xiaoming":1,"xiaohong":9,"xiaozhang":8,"xiaoli":3}

for k,v in friends_num.items():

print(k.title(),"'s favorite number is : " ,v)