爬虫学习笔记（十）数据存储——xml、json、csv 2020.5.9

前言

本节学习数据存储的xml、json、csv

1、json书写格式

如上图所说
例：

{
  "name":"张三",
  "age":10
}

2、json操作

import json

# 1.字符串和 dic list转换
# 字符串(json)----dict list
data = '[{"name":"张三","age":20},{"name":"李四","age":18}]'
list_data = json.loads(data)
print(type(data))
print(type(list_data))

# dict list ---字符串
list2 = [{"name": "张三", "age": 20}, {"name": "李四", "age": 18}]
data_json = json.dumps(list2)
print(type(list2))
print(type(data_json))

# 2.文件对象  和 dict list转换
# dict list  写入文件
list2 = [{"name": "张三", "age": 20}, {"name": "李四", "age": 18}]
# fp 是 file path
fp = open('02new.json', 'w')
json.dump(list2, fp)
fp.close()

# 读取文件json -----list dict
results = json.load(open('02new.json', 'r'))
print(results)

获得的json文件02new.json如下

[{"name": "\u5f20\u4e09", "age": 20}, {"name": "\u674e\u56db", "age": 18}]

3、csv

将json转换成csv

import json
import csv
# 需求：json 中的数据转换成 csv 文件
# 1.读json , 创建csv文件
json_fp = open('02new.json', 'r')
csv_fp = open('03csv.csv', 'w')
# 2.提出表头 , 表内容
data_list = json.load(json_fp)
sheet_title = data_list[0].keys() #表头
print(sheet_title)
sheet_data = []
for data in data_list:
    sheet_data.append(data.values()) #表内容
# 3. csv 写入器
writer = csv.writer(csv_fp)
# 4. 写入表头
writer.writerow(sheet_title)
# 5. 写入内容
writer.writerows(sheet_data)
# 6. 关闭两个文件
json_fp.close()
csv_fp.close()

得到的csv文件

4、例子

import requests
from lxml import etree
from bs4 import BeautifulSoup
import json

class BookSpider(object):
    def __init__(self):
        self.base_url = 'http://www.allitebooks.com/page/{}' #留下页数替换的位置
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36'}
        self.data_list = []
   
    # 1.构建所有url
    def get_url_list(self):
        url_list = []
        for i in range(1, 10):
            url = self.base_url.format(i)
            url_list.append(url)
        return url_list
    
    # 2.发请求
    def send_request(self, url):
        data = requests.get(url, headers=self.headers).content.decode()
        print(url)
        return data
    
    # 3.解析数据 xpath 或 bs4 选一个
    def parse_xpath_data(self, data):
        parse_data = etree.HTML(data)
        # 取出所有的书
        book_list = parse_data.xpath('//div[@class="main-content-inner clearfix"]/article')
        # 解析出每本书的信息，这要一层层找
        for book in book_list:
            book_dict = {}
            # 书名字
            book_dict['book_name'] = book.xpath('.//h2[@class="entry-title"]//text()')[0]
            # 书的图片url
            book_dict['book_img_url'] = book.xpath('div[@class="entry-thumbnail hover-thumb"]/a/img/@src')[0]
            # 书的作者
            book_dict['book_author'] = book.xpath('.//h5[@class="entry-author"]//text()')[0]
            # 书的简介
            book_dict['book_info'] = book.xpath('.//div[@class="entry-summary"]/p/text()')[0]
            self.data_list.append(book_dict)
    
    def parse_bs4_data(self, data):
        bs4_data = BeautifulSoup(data, 'lxml')
        # 取出所有的书
        book_list = bs4_data.select('article')
        # 解析出 每本书的 信息
        for book in book_list:
            book_dict = {}
            # 书名字
            book_dict['book_name'] = book.select_one('.entry-title').get_text()
            # 书的图片url
            book_dict['book_img_url'] = book.select_one('.attachment-post-thumbnail').get('src')
            # 书的作者
            book_dict['book_author'] = book.select_one('.entry-author').get_text()[3:]
            # 书的简介
            book_dict['book_info'] = book.select_one('.entry-summary p').get_text()
            self.data_list.append(book_dict)
   
    # 4.保存数据
    def save_data(self):
        json.dump(self.data_list, open("04book.json", 'w'))
        with open('book.html','w') as f:
            f.write(data)
    
    # 5.统筹调用
    def start(self):
        url_list = self.get_url_list()
        # 循环遍历发送请求
        for url in url_list:
            data = self.send_request(url)
            # self.parse_xpath_data(data)
            self.parse_bs4_data(data)
        self.save_data()

BookSpider().start()

获取的json

[{"book_name": "Microsoft Dynamics 365 For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Microsoft-Dynamics-365-For-Dummies.jpg", "book_author": " Renato Bellu", "book_info": "Accelerate your digital transformation and break down silos with Microsoft Dynamics 365 It\u2019s no secret that running a business involves several complex parts like managing staff, financials, marketing, and operations\u2014just to name a few. That\u2019s where Microsoft Dynamics 365, the most profitable business management tool, comes in. In\u00a0Microsoft\u2026"}, {"book_name": "Android Phones & Tablets For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Android-Phones-Tablets-For-Dummies.jpg", "book_author": " Dan Gookin", "book_info": "Outsmart your new Android Getting a smartphone or tablet can be intimidating for anyone, but this user-friendly guide is here to help you to get the most out of all your new gadget has to offer! Whether you\u2019re upgrading from an older model or totally new to the\u2026"}, {"book_name": "CCNA Security 640-554 Official Cert Guide", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/CCNA-Security-640-554-Official-Cert-Guide.jpg", "book_author": " Keith Barker, Scott Morris", "book_info": "Trust the best selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for exam success. They are built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam. CCNA Security 640-554 Official\u2026"}, {"book_name": "Applied WPF 4 in Context", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Applied-WPF-4-in-Context.jpg", "book_author": " Raffaele Garofalo", "book_info": "Applied WPF 4 in Context\u00a0sets the standard for leveraging the latest Windows user interface technology in your business applications. Using this book, you\u2019ll learn how to implement world-class Windows Professional Foundation (WPF)\u00a0solutions in a real-world line of business applications, developing the code from the ground up, and understand\u2026"}, {"book_name": "Ajax Patterns and Best Practices", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Ajax-Patterns-and-Best-Practices.jpg", "book_author": " Christian Gross", "book_info": "Takes a unique angle on Ajax, providing patterns for application development and best practices for integrating Ajax and REST into rich applications Designed to suit all groups of developers across many platforms, who are interested in the hot new topic of Ajax High demand for Ajax knowledge. Leading\u2026"}, {"book_name": "Testing and Tuning Market Trading Systems", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Testing-and-Tuning-Market-Trading-Systems-Algorithms-in-C.jpg", "book_author": " Timothy Masters", "book_info": "Build, test, and tune financial, insurance or other market trading systems using C++ algorithms and statistics. You\u2019ve had an idea and have done some preliminary experiments, and it looks promising. Where do you go from here?\u00a0 Well, this book discusses and dissects this case study approach. Seemingly good\u2026"}, {"book_name": "Final Cut Pro X Cookbook", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Final-Cut-Pro-X-Cookbook-400x493.jpg", "book_author": " Cox Jason", "book_info": "As technology becomes more and more accessible and easier to use, we are expected to do more in less time than ever before. Video editors are now expected to be able not only to edit, but create motion graphics, fix sound issues, enhance image quality and color and\u2026"}, {"book_name": "Windows Server 2012", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Windows-Server-2012.jpg", "book_author": " Samara Lynn", "book_info": "If your organization plans to move to a cloud infrastructure from a LAN or WAN, this book shows you how to do it efficiently with Windows Server 2012. Experienced Windows administrators will learn how to deploy, configure, and manage the server\u2019s expanded capabilities and features step-by-step, using clear\u2026"}, {"book_name": "Mastering 3D Printing in the Classroom, Library, and Lab", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Mastering-3D-Printing-in-the-Classroom-Library-and-Lab.jpg", "book_author": " Joan Horvath, Rich Cameron", "book_info": "Learn how to manage and integrate the technology of 3D printers in the classroom, library, and lab. With this book, the authors give practical, lessons-learned advice about the nuts and bolts of what happens when you mix 3D printers, teachers, students, and the general public in environments ranging\u2026"}, {"book_name": "Mastering Jenkins", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Mastering-Jenkins-400x493.jpg", "book_author": " Jonathan McAllister", "book_info": "With the software industry becoming more and more competitive, organizations are now integrating delivery automation and automated quality assurance practices into their business model. Jenkins represents a complete automation orchestration system, and can help converge once segregated groups into a cohesive product development and delivery team. By mastering\u2026"}, {"book_name": "Access 2019 For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Access-2019-For-Dummies.jpg", "book_author": " Ken Cook, Laurie A. Ulrich", "book_info": "Easy steps to practical databases People who really know how to build, populate, and simplify databases are few and far between.\u00a0Access 2019 For Dummies\u00a0is here to help you join the ranks of office heroes who possess these precious skills. This book offers clear and simple advice on how\u2026"}, {"book_name": "Learning Perl 6", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Learning-Perl-6.jpg", "book_author": " brian d foy", "book_info": "If you\u2019re ready to get started with Perl 6, this is the book you want, whether you\u2019re a programmer, system administrator, or web hacker. Perl 6 is a new language\u2014a modern reinvention of Perl suitable for almost any task, from short fixes to complete web applications. This hands-on\u2026"}, {"book_name": "Electron in Action", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Electron-in-Action.jpg", "book_author": " Steve Kinney", "book_info": "Electron in Action\u00a0guides you, step-by-step, as you learn to build cross-platform desktop applications that run on Windows, OSX, and Linux. By the end of the book, you\u2019ll be ready to build simple, snappy applications using JavaScript, Node, and the Electron framework."}, {"book_name": "Microservices in Action", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Morgan-Bruce.jpg", "book_author": " Morgan Bruce, Paulo A. Pereira", "book_info": "Microservices in Action\u00a0is a practical book about building and deploying microservice-based applications. Written for developers and architects with a solid grasp of service-oriented development, it tackles the challenge of putting microservices into production."}, {"book_name": "Spring in Action, 5th Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Spring-in-Action-5th-Edition.jpg", "book_author": " Craig Walls", "book_info": "Spring in Action, 5th Edition\u00a0is the fully updated revision of Manning\u2019s bestselling Spring in Action. This new edition includes all Spring 5.0 updates, along with new examples on reactive programming, Spring WebFlux, and microservices. You\u2019ll also find the latest Spring best practices, including Spring Boot for application setup\u2026"}, {"book_name": "YouTube Channels For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/YouTube-Channels-For-Dummies-400x493.jpg", "book_author": " Adam Wescott, John Carucci, Rob Ciampa, Stan Muller, Theresa Moore", "book_info": "Create content and build a YouTube channel like a pro Written by a successful YouTube channel producer,\u00a0YouTubeChannels For Dummies\u00a0shows you how to create content, establisha channel, build an audience, and successfully monetize videocontent online. Beginning with the basics, it shows you how toestablish a channel, join a partner\u2026"}, {"book_name": "Photoshop Elements 2018 For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Photoshop-Elements-2018-For-Dummies-400x498.jpg", "book_author": " Barbara Obermeier, Ted Padova", "book_info": "The top-selling book on Photoshop Elements\u2014updated in a new edition Photoshop Elements offers photo editors of all skill levels the power to turn run-of-the-mill images into beautiful works of art\u2014and\u00a0Photoshop Elements 2018 For Dummies\u00a0shows you how. Those new to photo editing who are looking for advice on making\u2026"}, {"book_name": "Yammer: Collaborate, Connect, and Share", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Yammer-Collaborate-Connect-and-Share.jpg", "book_author": " Charles Waghmare", "book_info": "Build a successful Yammer implementation, make your workplace social and collaborative, create a culture of sharing, form expert communities and generate innovative solutions. Besides, this book will help to enhance your collaboration your suppliers, partners, and clients. The author starts by giving an introduction to social collaborations and\u2026"}, {"book_name": "Deploying Chromebooks in the Classroom", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Deploying-Chromebooks-in-the-Classroom.jpg", "book_author": " Guy Hart-Davis", "book_info": "Learn how to deploy Chromebook computers in a classroom or lab situation and how to navigate the hardware and software choices you face. This book\u00a0equips you with the skills and knowledge to plan and execute a deployment of Chromebook computers in the classroom.\u00a0 Teachers and IT administrators at\u2026"}, {"book_name": "Getting to Know Vue.js", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Getting-to-Know-Vuejs.jpg", "book_author": " Brett Nelson", "book_info": "Learn how to render lists of items without repeating your code structure and how to work with conditional rendering items and event handling. Containing all you need to know to get started with Vue.js, this book will take you through using build tools (transpile to ES5), creating custom\u2026"}, {"book_name": "Dart in Action", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Dart-in-Action.jpg", "book_author": " Chris Buckett", "book_info": "Dart in Action\u00a0introduces Google\u2019s Dart language and provides techniques and examples showing how to use it as a viable replacement for Java and JavaScript in browser-based desktop and mobile applications. It begins with a rapid overview of Dart language and tools, including features like interacting with the browser,\u2026"}, {"book_name": "Mastering Azure Analytics", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Mastering-Azure-Analytics.jpg", "book_author": " Zoiner Tejada", "book_info": "Microsoft Azure has over 20 platform-as-a-service (PaaS) offerings that can act in support of a big data analytics solution. So which one is right for your project? This practical book helps you understand the breadth of Azure services by organizing them into a reference framework you can use\u2026"}, {"book_name": "Vue.js: Up and Running", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Vue.js-Up-and-Running.jpg", "book_author": " Callum Macrae", "book_info": "Get a brisk introduction to building fast, interactive single-page web applications with Vue.js, the popular JavaScript framework that organizes and simplifies web development. With this practical guide, you\u2019ll quickly move from basics to custom components and advanced features\u2014including JSX, the JavaScript syntax extension. Author Callum Macrae shows you\u2026"}, {"book_name": "Excel 2019 For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Excel-2019-For-Dummies.jpg", "book_author": " Greg Harvey", "book_info": "The bestselling Excel book on the market \u2014 now in a new edition covering the latest version of Excel! Excel is the spreadsheet and data analysis tool of choice for people across the globe who utilize the Microsoft Office suite to make their work and personal lives easier\u2026."}, {"book_name": "Practical SharePoint 2013 Governance", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Practical-SharePoint-2013-Governance-400x494.jpg", "book_author": " Steve Goodyear", "book_info": "Practical SharePoint 2013 Governance\u00a0is the first book to offer practical and action-focused SharePoint governance guidance based on consulting experiences with real organizations in the field. It provides the quintessential governance reference guide for SharePoint consultants, administrators, architects, and anyone else looking for actual hands-on governance guidance. This book\u2026"}, {"book_name": "CWTS, 2nd Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/CWTS-2nd-Edition.jpg", "book_author": " Robert J. Bartz", "book_info": "Pass the CWTS exam with the help of this fully updated officialguide Completely updated to cover the latest Certified WirelessTechnology Specialist exam, this best-selling guide is the onlyOfficial Study Guide for the popular wireless certification. Thisfoundation-level certification is in high demand for wirelessnetworking professionals, and you can master\u2026"}, {"book_name": "Windows Store App Development", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Windows-Store-App-Development.jpg", "book_author": " Pete Brown", "book_info": "Windows Store App Development\u00a0introduces C# developers to working with Windows Store apps. It provides full coverage of XAML, and addresses both app design and development. Following numerous carefully crafted examples, you\u2019ll learn about new Windows 8 features, the WinRT API, and .NET 4.5. Along the way, you\u2019ll pick\u2026"}, {"book_name": "Building Your Online Store With WordPress and WooCommerce", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Building-Your-Online-Store-With-WordPress-and-WooCommerce1.jpg", "book_author": " Lisa Sims", "book_info": "Teaches you all about e-commerce and how to create your own online shop using WordPress and WooCommerce. Regardless of a business\u2019s size, e-commerce helps level the playing field, increases a business\u2019s exposure, allows companies to reach customers globally, and streamlines the fulfillment process. In the past, e-commerce websites\u2026"}, {"book_name": "WordPress All-in-One For Dummies, 3rd Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/WordPress-All-in-One-For-Dummies-3rd-Edition.jpg", "book_author": " Lisa Sabin-Wilson", "book_info": "Everything you need to know about WordPress If you strive to have a blog that suits your needs, delights your readers, and keeps visitors coming back for more, this book is your ace in the hole! Offering you cream-of-the-crop guidance from eight bestselling books,\u00a0WordPress All-in-One For Dummies\u00a0is the\u2026"}, {"book_name": "Software Development From A to Z", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Software-Development-From-A-to-Z.jpg", "book_author": " Olga Filipova, Rui Vil\u00e3o", "book_info": "Understand the big picture of the software development process. We use software every day \u2013 operating systems, applications, document editing programs, home banking \u2013 but have you ever wondered who creates software and how it\u2019s created? This book guides you through the entire process, from conception to the\u2026"}, {"book_name": "Practical TLA+", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Practical-TLA-.jpg", "book_author": " Hillel Wayne", "book_info": "Learn how to design complex, correct programs and fix problems before writing a single line of code. This book is a practical, comprehensive resource on TLA+ programming with rich, complex examples.\u00a0Practical TLA+\u00a0shows you how to use TLA+ to specify a complex system and test the design itself for\u2026"}, {"book_name": "3D Printing For Dummies, 2nd Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/3D-Printing-For-Dummies-2nd-Edition.jpg", "book_author": " Kalani Kirk Hausman, Richard Horne", "book_info": "The bestselling book on 3D printing 3D printing is one of the coolest inventions we\u2019ve seen in our lifetime, and now you can join the ranks of businesspeople, entrepreneurs, and hobbyists who use it to do everything from printing foods and candles to replacement parts for older technologies\u2014and\u2026"}, {"book_name": "Pro Netbeans IDE 6 Rich Client Platform Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Pro-Netbeans-IDE-6-Rich-Client-Platform-Edition.jpg", "book_author": " Adam Myatt", "book_info": "This book will enable you to rapidly develop Java front ends of applications using API buttons, functions, and features mostly based in the Java SE 6 platform. It covers working with rich client platform features available in NetBeans for building web-based application front ends. The book also shows\u2026"}, {"book_name": "PHP, MySQL, JavaScript & HTML5 All-in-One For Dummies", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/PHP-MySQL-JavaScript-HTML5-All-in-One-For-Dummies.jpg", "book_author": " Janet Valade, Steve Suehring", "book_info": "Get the basics on four key web programming tools in one great book! PHP, JavaScript, and HTML5 are essential programming languages for creating dynamic websites that work with the MySQL database. PHP and MySQL provide a robust, easy-to-learn, open-source solution for creating superb e-commerce sites and content management\u2026."}, {"book_name": "Pro Angular 6, 3rd Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Pro-Angular-6-3rd-Edition.jpg", "book_author": " Adam Freeman", "book_info": "Get the most from Angular 6, the leading framework for building dynamic JavaScript applications. Understand the MVC pattern and the benefits it can offer. Best-selling author\u00a0Adam Freeman\u00a0shows you how to use Angular in your projects, starting from the nuts and bolts and building up to the most advanced\u2026"}, {"book_name": "Expert SQL Server Transactions and Locking", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Expert-SQL-Server-Transactions-and-Locking.jpg", "book_author": " Dmitri Korotkevitch", "book_info": "Master SQL Server\u2019s Concurrency Model so you can implement high-throughput systems that deliver transactional consistency to your application customers. This book explains how to troubleshoot and address blocking problems and deadlocks, and write code and design database schemas to minimize concurrency issues in the systems you develop. SQL\u2026"}, {"book_name": "Python Descriptors, 2nd Edition", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Python-Descriptors.jpg", "book_author": " Jacob Zimmerman", "book_info": "Create descriptors and see ideas and examples of how to use descriptors effectively. In this short book, you\u2019ll explore descriptors in general, with a deep explanation of what descriptors are, how they work, and how they\u2019re used. Once you understand the simplicity of the descriptor protocol, the author\u2026"}, {"book_name": "Excel 2019 Bible", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Excel-2019-Bible.jpg", "book_author": " John Walkenbach, Michael Alexander, Richard Kusleika", "book_info": "The complete guide to Excel 2019 Whether you are just starting out or an Excel novice, the\u00a0Excel 2019 Bible\u00a0is your comprehensive, go-to guide for all your Excel 2019 needs. Whether you use Excel at work or at home, you will be guided through the powerful new features and\u2026"}, {"book_name": "Oracle Big Data Handbook", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Oracle-Big-Data-Handbook-400x495.jpg", "book_author": " Brian MacDonald, Bruce Nelson, David Segleau, Debra Harding, Gokula Mishra, Helen Sun, Keith Laker, Khader Mohiuddin, Mark Hornick, Robert Stackowiak, Tom Plunkett", "book_info": "Transform Big Data into Insight \u201cIn this book, some of Oracle\u2019s best engineers and architects explain how you can make use of big data. They\u2019ll tell you how you can integrate your existing Oracle solutions with big data systems, using each where appropriate and moving data between them\u2026"}, {"book_name": "IP Multicast, Volume II", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/IP-Multicast-Volume-II-400x498.jpg", "book_author": " Arvind Durai, Josh Loveless, Ray Blair", "book_info": "Design, operate, and troubleshoot advanced Cisco IP multicast in enterprise, data center, and service provider networks IP Multicast, Volume II thoroughly covers advanced IP multicast designs and protocols specific to Cisco routers and switches. It offers a pragmatic discussion of common features, deployment models, and field practices for\u2026"}, {"book_name": "Adobe Creative Suite 5 Bible", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Adobe-Creative-Suite-5-Bible.jpg", "book_author": " Kelly L. Murdock, Ted Padova", "book_info": "Learn to use CS5 to produce better work and become a more productive designer The newest release of Adobe Creative Suite boasts a world of must-have features and enhancements to each of its applications: Photoshop, Illustrator, InDesign, GoLive, Acrobat, and Version Cue. Written by a duo of Adobe\u2026"}, {"book_name": "Photoshop Lightroom 3", "book_img_url": "http://www.allitebooks.com/wp-content/uploads/2018/10/Photoshop-Lightroom-3.jpg", "book_author": " Nolan Hester", "book_info": "This book uses simple step-by-step instructions, loads of screen shots, and an array of time-saving tips and tricks, serving both as the quickest route to Adobe Photoshop Lightroom 3 mastery for new users, and a handy reference for more experienced digital photographers. 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爬取的网页

结语

学习了json和csv数据储存
回顾了xpath和bs4