python编程:从入门到实践----第六章:字典>练习
friends = {'first name':'Zou','last name':'Li Peng','age':27,'city':'Shenzhen'}
print('first name:' + friends[ 'first name'])
print('last name:' + friends[ 'last name'])
print('age:' + str(friends['age']))
print('city:' + friends['city'])
#输出结果:
first name:Zou
last name:Li Peng
age:27
city:Shenzhen
favorite_numbers ={ 'Mary':2, 'Jim':15, 'Lucy':20, 'Crystal':28, 'Panda':68}
print('Mary:' + str(favorite_numbers['Mary']))
print('Jim:' + str(favorite_numbers['Jim']))
print('Lucy:' + str(favorite_numbers['Lucy']))
print('Crystal:' + str(favorite_numbers['Crystal']))
print('Panda:' + str(favorite_numbers['Panda']))
#输出结果:
Mary:2
Jim:15
Lucy:20
Crystal:28
Panda:68
words={
'hello':'a greeting',
'word':'used to express agreement',
'meet':'suitable; fit; proper',
'fruit':'a male homosexual',
'bird':'a person of a specified kind or character'
}
print('hello:' + words['hello'])
print('word:' + words['word'])
print('meet:' + words['meet'])
print('fruit:' + words['fruit'])
print('bird:' + words['bird'])
#输出结果:
hello:a greeting
word:used to express agreement
meet:suitable; fit; proper
fruit:a male homosexual
bird:a person of a specified kind or character
words={
'hello':'a greeting',
'word':'used to express agreement',
'meet':'suitable; fit; proper',
'fruit':'a male homosexual',
'bird':'a person of a specified kind or character',
}
for key, value in words.items(): #items方法:返回一个键-值列表
print("\nkey:" +key)
print("Value:" +value)
#输出结果:
key:hello
Value:a greeting
key:word
Value:used to express agreement
key:meet
Value:suitable; fit; proper
key:fruit
Value:a male homosexual
key:bird
Value:a person of a specified kind or character
rivers ={
'yangtze':'china',
'danube':'germany',
'nile':'egypt'
}
for key ,value in rivers.items():
print("The "+key.title() +" runs through " + value.title())
for river in rivers.keys():
print(river.title())
for river in rivers.values():
print(river.title())
#输出结果:
The Yangtze runs through China
The Danube runs through Germany
The Nile runs through Egypt
Yangtze
Danube
Nile
China
Germany
Egypt
favorite_language = {
'jen':'python',
'sarah':'c',
'edward':'ruby',
'phil':'python',
}
Investigated_person = {
'jen':'python',
'sarah':'c',
}
for persons in favorite_language.keys():
if persons in Investigated_person:
print(persons + ",thank you to attend investigation.")
else:
print(persons + ",please attend in the investigation.")
friends1 = {'first name':'Crystal','last name':'Wang','age':29,'city':'Shenzhen'}
friends2 = {'first name':'Zou','last name':'Li','age':27,'city':'Hongkong'}
friends3 = {'first name':'James','last name':'Wu','age':28,'city':'Beijing'}
friends = [friends1,friends2,friends3]
for friend in friends:
print(friend)
#输出结果:
{'first name': 'Crystal', 'last name': 'Wang', 'age': 29, 'city': 'Shenzhen'}
{'first name': 'Zou', 'last name': 'Li', 'age': 27, 'city': 'Hongkong'}
{'first name': 'James', 'last name': 'Wu', 'age': 28, 'city': 'Beijing'}
Black ={ 'kind':'dog','host':'Crystal'}
Mini ={ 'kind':'cat','host':'Zou'}
White ={ 'kind':'bird','host':'James'}
pets = [Black,Mini,White]
for pet in pets:
print(pet)
#输出结果:
{'kind': 'dog', 'host': 'Crystal'}
{'kind': 'cat', 'host': 'Zou'}
{'kind': 'bird', 'host': 'James'}
favorite_places = {
'crystal':['hainan','xinjiang','xizang'],
'james':['beijing','taiwan','hongkong'],
'zou':['jiangshu','shanghai','yunnan'],
}
for name,favorite_place in favorite_places.items():
print("\n"+name.title() + "'s favorite places are:")
for place in favorite_place:
print("\t"+ place.title())
#输出结果:
Crystal's favorite places are:
Hainan
Xinjiang
Xizang
James's favorite places are:
Beijing
Taiwan
Hongkong
Zou's favorite places are:
Jiangshu
Shanghai
Yunnan
favorite_numbers ={
'mary':[2,10,15],
'jim':[3,4,18],
'lucy':[6,8,12],
'crystal':[9,16,25],
'panda':[21,28,68]
}
for name,favorite_number in favorite_numbers.items():
print("\n" + name.title() + "'s favorite numbers are:")
for numbers in favorite_number:
print(str(numbers))
#输出结果:
Mary's favorite numbers are:
2
10
15
Jim's favorite numbers are:
3
4
18
Lucy's favorite numbers are:
6
8
12
Crystal's favorite numbers are:
9
16
25
Panda's favorite numbers are:
21
28
68
cities ={
'haikou':{
'country':'China',
'population':'25万',
'fact':'At the southernmost tip of China',
},
'beijing':{
'country':'China',
'population':'60万',
'fact':'Capital of China',
},
'shanghai':{
'country':'China',
'population':'65万',
'fact':'Financial city',
}
}
for city,city_info in cities.items():
print("\nCity:"+ city)
Country = city_info['country']
Population = city_info['population']
Fact = city_info['fact']
print('Country:'+Country.title())
print('Population:'+Population.title())
print('Fact:'+Fact.title())
#输出结果:
City:haikou
Country:China
Population:25万
Fact:At The Southernmost Tip Of China
City:beijing
Country:China
Population:60万
Fact:Capital Of China
City:shanghai
Country:China
Population:65万
Fact:Financial City
python编程:从入门到实践----第六章:字典>练习的更多相关文章
- #Python编程从入门到实践#第四章笔记
#Python编程从入门到实践#第四章笔记 操作列表 1.遍历列表 使用for循环,遍历values列表 for value in values: print(value) 2.数字列表 使 ...
- python编程:从入门到实践----第六章>字典
一.一个简单的字典:alien_0存储外星人的颜色和点数,使用print打印出来 alien_0 = {'color': 'green','points': 5} print(alien_0['col ...
- Python:从入门到实践--第六章--字典--练习
#1.人:使用一个字典来存储一个熟人的信息;包括姓,名,年龄和居住的城市.将字典中的每项信息都打印出来 friend = { 'last_name':'马', 'first_name':'脑壳', ' ...
- 《Python编程从入门到实践》第二章_变量和简单数据类型
什么是变量呢? 举例: >>> message = "Hello,Python!" >>> print (message) Hello,Pyth ...
- #Python编程从入门到实践#第三章笔记
列表简介 1.什么是列表 列表:由一系列按也顶顺序排列的元素组成.元素之间可以没有任何关系. 列表:用方括号[]表示,并用逗号分隔其中元素.名称一般为复数 2.访问元素 (1)列表是有序集合 ...
- Python编程从入门到实践笔记——异常和存储数据
Python编程从入门到实践笔记——异常和存储数据 #coding=gbk #Python编程从入门到实践笔记——异常和存储数据 #10.3异常 #Python使用被称为异常的特殊对象来管理程序执行期 ...
- Python编程从入门到实践笔记——文件
Python编程从入门到实践笔记——文件 #coding=gbk #Python编程从入门到实践笔记——文件 #10.1从文件中读取数据 #1.读取整个文件 file_name = 'pi_digit ...
- Python编程从入门到实践笔记——类
Python编程从入门到实践笔记——类 #coding=gbk #Python编程从入门到实践笔记——类 #9.1创建和使用类 #1.创建Dog类 class Dog():#类名首字母大写 " ...
- Python编程从入门到实践笔记——函数
Python编程从入门到实践笔记——函数 #coding=gbk #Python编程从入门到实践笔记——函数 #8.1定义函数 def 函数名(形参): # [缩进]注释+函数体 #1.向函数传递信息 ...
- Python编程从入门到实践笔记——用户输入和while循环
Python编程从入门到实践笔记——用户输入和while循环 #coding=utf-8 #函数input()让程序暂停运行,等待用户输入一些文本.得到用户的输入以后将其存储在一个变量中,方便后续使用 ...
随机推荐
- spring源码 ListableBeanFactory接口
ListableBeanFactory接口表示这些Bean是可列表的 /* * Copyright 2002-2016 the original author or authors. * * Lice ...
- springboot - 映射 /error 到自定义且实现了ErrorController的Controller
1.总览 2.代码 1).pom.xml <dependencies> <dependency> <groupId>org.springframework.boot ...
- 初步了解URL
URl的定义: 在webs上每种可用的资源(比如:HTML文档,图像,视频片段,程序等)都可以由一个通用的资源标志符(Universal Resource Identifier)进行定位.URl的组成 ...
- 基础语法-for循环的嵌套
基础语法-for循环的嵌套 作者:尹正杰 版权声明:原创作品,谢绝转载!否则将追究法律责任. 一.for循环嵌套概述 说白了就是在for循环中再嵌套一层for循环. 二.for循环嵌套案例 1> ...
- SqlServer 集合运算符
1.集合运算符概述 (1)集合运算符运用与集合之间的运算. (2)多元集合: 指的是来自两个输入查询的集合,可能包含重复项 (3)T-SQL 支持三种集合运算符 union .intersect .e ...
- 18 react react-redux 的编写 TodoList
1. 安装 react-redux yarn add react-redux 2. react-redux 编写 TodoList 使所有子组件 都能使用 store #index.js import ...
- hibernate.hbm.xml必须必须配置主键
hibernate.hbm.xml必须必须配置主键 <id name="XXid" type="java.lang.long" column=" ...
- 【5分钟+】计算机系统结构:CPU性能公式
计算机系统结构:CPU性能公式 基础知识 CPU 时间:一个程序在 CPU 上运行的时间.(不包括I/O时间) 主频.时钟频率:CPU 内部主时钟的频率,表示1秒可以完成多少个周期. 例如,主频为 4 ...
- Hour of Code|京东云邀您一起,“码”上行动
"如果我并不希望成为一名程序员,那么为什么需要学习编程呢?" 相信很多人对于现在鼓励从小就学习编程的趋势都在心里问过这样的一个问题.在回答这个问题前,先和大家分享一个小故事吧. 1 ...
- centos系统 通过命名查找需要安装哪个安装包 command not found
场景: 服务器未安装命令,但是我们需要使用,不知道该安装什么包,以sz命令为例 [root@localhost linshi]# sz tes.sh -bash: /usr/bin/sz: 没有那个文 ...