1.内容丰富,涵盖Scrapy基础知识 实际应用,深入讲解爬虫专业人员的秘密 2.作者具有15年以上的软件开发经验,能将知识点清晰、有条理地呈现给读者,有效传授爬虫技能 3.在学习完本书后,你将对数据爬取胸有成竹,并将数据应用在自己的应用程序中
¥52.30定价:¥69.80 (7.5折)
精通Python爬虫框架Scrapy 人民邮电出版社【新华正版书籍】 全新正版书籍 正规发票 多仓就近发货
Scrapy是一个开源的Python爬虫框架,可以用来轻松提取从页面数据。Scrapy带有丰富的特性,可通过简单的编码或配置来访问,从而可以节省开发人员数周的开发时间,并高效地提取所需数据。Scrapy有一个高度活跃且迅速增长的社区,而且已经成为黑客、创业者和Web爬取专家的框架。本书讲解了Scrapy的基础知识,讨论了如何从任意源提取数据,如何清理数据,以及如何使用Python和第三方API进行处理,以满足自身需求。本书还讲解了如何将爬取的数据高效地馈入数据库、搜索引擎和流数据处理系统(比如Apache Spark)。在学习完本书后,你将对数据爬取胸有成竹,并将数据应用在自己的应用程序中。本书内容:使用HTML和Xpath提取所需的数据;使用Python编写Scrapy爬虫,并在网络上进行爬取操作;将数据推送到任意数据库、搜搜引擎或分析系统的方法;配置爬虫,使其下载文件
¥39.60定价:¥59.00 (6.72折)
【预订】Minimally Invasive Thyroidectomy [With DVD] 美国库房发货,通常付款后3-5周到货!
¥2079
【预订】Adrenal Glands: Diagnostic Aspects and Surgical 美国库房发货,通常付款后3-5周到货!
¥1502
【预订】Constitutive Modelling of Granular Materials 美国库房发货,通常付款后3-5周到货!
¥2774
海外直订Fiscal State Aid Law and Harmful Tax Competition... 欧盟财政
¥1170
明星店铺 中华商务进口图书旗舰店
海外直订Writing Systems and Their Use 书写系统及其使用:书写语言学综述
¥1573
明星店铺 中华商务进口图书旗舰店
【预订】An Introduction to Molecular Modelling, from Theory 美国库房发货,通常付款后3-5周到货!
¥139.00
【预订】Parameterized and Exact Computation: 7th 美国库房发货,通常付款后3-5周到货!
¥478.00
【预订】Advanced Topics in Scattering and Biomedical Engineering 美国库房发货,通常付款后3-5周到货!
¥2002
按需印刷Computer Based Learning 预订,预计下单后2-3周左右发货!
¥879.00
【预订】Biosensors for Direct Monitoring of Environmental Y97807 美国库房发货,通常付款后3-5周到货!
¥2006
【预售 按需印刷】Ancient Greek Colonies in the Black Sea 2
¥2127.55
海外直订医药图书Geriatric Nephrology: The Medical, Psychosocial, Nur
¥2067
明星店铺 中华商务进口图书旗舰店
按需印刷Security in Computer and Information Sciences 预订,预计下单后2-3周左右发货!
¥662.00
预售 按需印刷Mobilization and Stimulation of Neuromuscul 北京发货,付款后10天内发货
¥531.00
【预订】Security in Computer and Information Sciences 9781013270 国外库房发货,通常付款后3-5周到货!
Product Details 基本信息 ISBN-13 书号 9781013270741 Author 作者 Tzovaras Dimitrios Format 版本 平装-胶订 Pages Number 页数 170页 Publisher 出版社 Saint Philip Street Press Publication Date 出版日期 1800-01-01 Product Dimensions 商品尺寸 11.00 x 8.50 x 0.36 Shipping Weight 商品重量 0.90 Language 语种 其它(含多语)
¥473.00
海外直订Forest Insects and Pathogens in a Changing Environment 环
¥579.00
明星店铺 中华商务进口图书旗舰店
海外直订Machine Learning and Knowledge Discovery in Databases: E
¥553.00
明星店铺 中华商务进口图书旗舰店
【预订】Tourism Futures 2 Book Set 美国库房发货,通常付款后3-5周到货!
¥1154
【预订】A Primer on Theoretical Soil Mechanics 9781009210331 国外库房发货,通常付款后3-5周到货!
Product Details 基本信息 ISBN-13 书号 9781009210331 Author 作者 Dimitrios Kolymbas Format 版本 精装 Pages Number 页数 196页 Publisher 出版社 Cambridge University Press Publication Date 出版日期 2022-08-01 Product Dimensions 商品尺寸 10.00 x 7.20 x 0.60 Shipping Weight 商品重量 1.25 Language 语种 其它(含多语) Book Contents 内容简介 A Primer to Theoretical Soil Mechanics is about adapting continuum mechanics to granular materials. The field of continuum mechanics offers many fruitful concepts and methods, however there is declining interest in the field due to its complex and fragmented nature. This book’s purpose is therefore to facilitate the understanding of the theoretical principles of soil mechanics, as well as introducing the new theory of barodesy. This title argues for barodesy as a simple alternative to the plasticity theory used currently and provides a systematic ins
¥585.00
海外直订Sensors in Agriculture: Volume 1 农业传感器:卷一
¥647.00
明星店铺 中华商务进口图书旗舰店
预售 按需印刷 Positioning the roles, interfaces & proces 北京发货,付款后10天内发货
¥1122
【预售 按需印刷】Biomedical Membranes and (Bio)Artificial
¥1473.9
预订 Nephrology and Urology in the Aged Patient 9789401048040 海外仓库发货,通常付款后4-9周到货!
图书信息 书号: 9789401048040 作者: Dimitrios G Oreopoulos 装帧: 平装-胶订 页数: 620页 出版社: Springer 尺寸: 0.9 x 0.6 x 0.1 cm 出版日期: 2012-10-29 重量: 2g 语种: 其它(含多语) 内容简介 The master tool of logic is the syllogism. If A> Band B> C, then it mu
¥803.00
预售 按需印刷 Handbook of Research on Trends in the Diag慢性病诊断和治疗趋势 北京发货,付款后10天内发货
¥2952.75
预订Tourism Management Dynamics 预订,预计下单后3-4周左右发货!
¥2470
Product Details 基本信息 ISBN-13 书号 9787301266854 Author 作者 (希)迪米特里奥斯·阿斯特里奥(Dimitrios Asteriou),(英)史蒂芬·霍尔(Stephen G.Hall Format 版本 平装-胶订 Pages Number 页数 421页 Publisher 出版社 北京大学出版社 Publication Date 出版日期 2016-01-01 Product Dimensions 商品尺寸 16开 Language 语种 其它(含多语) Book Contents 内容简介 本书共21章,除导论外,分为六个部分--统计背景及基本数据处理、古典线性回归模型、背离古典线性回归模型假设、计量经济学专题、时间序列计量经济学、面板数据计量经济学,覆盖了从数据处理到面板数据等计量经济学的几乎所有重要主题。
¥52.00
预售 按需印刷 Computer Based Learning 北京发货,付款后10天内发货
¥879.00
【预售 按需印刷】Experimental Investigation of Diesel Engi 北京发货,付款后10天内发货
¥1173
【预售 按需印刷】Emerging Trends and Innovations in Industries of th 北京直发,付款后10日内发货
A Multidisciplinary Approach
¥418.20
【预订】Handbook of Computer Programming with Python 97803676877 国外库房发货,通常付款后3-5周到货!
Product Details 基本信息 ISBN-13 书号 9780367687779 Author 作者 Edited by Dimitrios Xanthidis Format 版本 精装 Pages Number 页数 610页 Publisher 出版社 Chapman and Hall/CRC Publication Date 出版日期 2022-08-04 Product Dimensions 商品尺寸 254 x 178 mm (7 x 10) Language 语种 其它(含多语) Book Contents 内容简介 Handbook of Computer Programming with Python provides a hands-on experience based on the underlying topics, and assist students and faculty members in developing their algorithmic thought process and developing programs for given computational problems. It can be also used by professionals who possess the necessary theoretical and computational thinking background but are presently making their transition to Python.Key Features:Discusses concepts such as Basic Programming Principles, OOP Principles, Database Programming, GUI Programming, Network Programming, Data Analytics and Visuali
¥1162
海外直订Computational Mathematics: An Introduction to Numerical
¥1160
明星店铺 中华商务进口图书旗舰店
海外直订Machine Learning and Knowledge Discovery in Databases: E
¥553.00
明星店铺 中华商务进口图书旗舰店
预订 Experimental Investigation of Diesel Engine Fue... 978365 海外仓库发货,通常付款后4-9周到货!
图书信息 书号: 9783659308833 作者: Tziourtzioumis Dimitrios 装帧: 平装-胶订 页数: 172页 出版社: Omnium Gmbh & Co. Kg. 尺寸: 0.9 x 0.6 x 22.8 cm 出版日期: 2013-01-16 重量: 1g 语种: 其它(含多语) 内容简介 In Greece, biodiesel, in the form of Fatty Acid Methyl
¥943.00
海外直订Computer-aided drug design. The HCV family example. 计算机辅
¥335.00
明星店铺 中华商务进口图书旗舰店
应用计量经济学(第2版) 北京大学出版社 新华书店正版,关注店铺成为会员可享店铺专属优惠,团购客户请咨询在线客服!
¥48.80定价:¥66.00 (7.4折)
【预售 按需印刷】An Essay in the Probability Theory 北京发货,付款后10天内发货
¥811.00
海外直订Computer Based Learning 以计算机为基础的学习
¥552.00
明星店铺 中华商务进口图书旗舰店
【预订】Managing Successful and Ethical Organizational Change 97 国外库房发货,通常付款后3-5周到货!
Product Details 基本信息 ISBN-13 书号 9798369302354 Author 作者 Dimitrios Belias Format 版本 精装 Pages Number 页数 310页 Publisher 出版社 IGI Publishing Publication Date 出版日期 2023-10-09 Language 语种 其它(含多语) Book Contents 内容简介 In an era characterized by rapid economic developments, globalization, political shifts, cutting-edge technologies, and the ubiquitous dissemination of information, organizations face a pressing need to adapt to the ever-changing landscape. Recognizing the crucial role of effective leadership in driving organizational change, Managing Successful and Ethical Organizational Change delves into the essential skills and competencies required to undertake this formidable task. It emphasizes the importance of change in both personal and social spheres, highlighting its symbiotic relationship with innovation—a continuous process of development and reorganization tha
¥1980
【预订】Enterprise Networking: Multilayer Switching and 美国库房发货,通常付款后3-5周到货!
¥753.00
【预订】Good Teaching in Tourism Higher Education 美国库房发货,通常付款后3-5周到货!
¥1046
【预售 按需印刷】Security in Computer and Information Scie 北京发货,付款后10天内发货
¥662.00
【预订】Scattering and Biomedical Engineering: Modeling and 美国库房发货,通常付款后3-5周到货!
¥1633
海外直订Olive Oil: Processing, Characterization, and Health Bene
¥399.00
明星店铺 中华商务进口图书旗舰店
【预订】Three Dimensional System Integration: IC Stacking 美国库房发货,通常付款后3-5周到货!
¥520.00
【预订】Fine- And Coarse-Grain Reconfigurable Computing 美国库房发货,通常付款后3-5周到货!
¥1040
海外直订Service-Oriented Computing Icsoc 2006: 4th International
¥639.00
明星店铺 中华商务进口图书旗舰店
海外直订医药图书Optimizing the Management of Fertility in Women Over
¥952.00
明星店铺 中华商务进口图书旗舰店
按需印刷The Cosmic Theory of Thermodynamics "The Creation and th 预订,预计下单后2-3周左右发货!
¥455.00
¥618.00
【预订】The European Parliament in the News 9783030938116 国外库房发货,通常付款后3-5周到货!
Product Details 基本信息 ISBN-13 书号 9783030938116 Author 作者 Dimitrios Souliotis Format 版本 平装-胶订 Pages Number 页数 188页 Publisher 出版社 Springer Berlin Heidelberg Publication Date 出版日期 2023-02-14 Product Dimensions 商品尺寸 9.21 x 6.14 x 0.44 Shipping Weight 商品重量 0.65 Language 语种 其它(含多语) Book Contents 内容简介 This book analyzes the social legitimacy deficit of the European Parliament (EP) in the United Kingdom and Greece. It does so by considering it, partially, a communication deficit, and by addressing the relevant inadequacies of its communication and media relations performance. Following this approach, the book identifies and critically analyzes the problems that the European Parliament is facing in communicating and portraying itself to news websites in the United Kingdom and Greece, and offers potential solutions to the issues presented.The bo
¥1040
预订A Primer on Theoretical Soil Mechanics 预订,预计下单后2-3周左右发货!
¥949.00
【预订】Internet-Of-Things (Iot) Systems: Architectures, Algorit 美国库房发货,通常付款后3-5周到货!
Product Details 基本信息 ISBN-13 书号 9783319888286 Author 作者 Serpanos Dimitrios Format 版本 平装-胶订 Pages Number 页数 95页 Publisher 出版社 Springer Publication Date 出版日期 1800-01-01 Language 语种 英语
¥608.00
【预售 按需印刷】Project Selection Methodology Using Multi-Criteria
¥495.55
按需印刷POR O Impacto do Regulamento de Massa Bruta Verificada n 预订,预计下单后3-6周左右发货!
¥739.00
【预订】Handbook of the Band Structure of Elemental Solids: From 美国库房发货,通常付款后3-5周到货!
¥2457
预售 按需印刷 Design, Development, and Use of Secure Ele安全的电子投票系统的 北京发货,付款后10天内发货
¥1495.5
按需印刷Ancient Greek Colonies in the Black Sea 2, Volume I 预订,预计下单后2-3周左右发货!
¥2459
海外直订Regional Behaviour 区域行为:欧洲地区的政治价值和经济增长
¥814.00
明星店铺 中华商务进口图书旗舰店