网络爬虫案例教程(Python·微课视频版)

Brand: 清华大学出版社    Sold By: EM China
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)
网络爬虫案例教程(Python·微课视频版)

网络爬虫案例教程(Python·微课视频版)

Brand: 清华大学出版社    Sold By: EM China
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网络爬虫案例教程(Python·微课视频版)

网络爬虫案例教程(Python·微课视频版)

$39.33

产品特色

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Product Details
产品特色

编辑推荐

从实战出发,适合初学者,紧跟 章节案例,理清代码实现,很快掌握编写Python爬虫程序。

 
内容简介

本书主要以纯案例驱动的形式,分别使用和结合使用requests库、selenium库,从互联网上收集数据。主要内容包括收集静态网页数据,网页解析,JSON数据,JSON解析,多级翻页,cookie和session,验证登录,多线程,数据的存储,收集到的数据包括静态网页数据、json、图片、音频、视频等数据,并对获取的数据进行清洗。适合Python初学者,也适合研究Python的广大科研人员、学者、工程技术人员。本教材采用纯的案例,和简单的注释,其他一些先修的知识是在其他课程有开设。

作者简介

韩莹,防灾科技学院教师,讲授“数据科学与大数据”课程,本教材采用纯的案例,和简单的注释,其他一些先修的知识是在其他课程有开设。

目  录
第1章绪论
1.1网络爬虫的基本概念
1.2网络爬虫的基本流程
1.2.1发起请求
1.2.2获取响应内容
1.2.3解析内容
1.2.4持久化保存数据
1.3网络爬虫的合法性问题
1.4反爬虫技术
1.4.1Useragent控制访问
1.4.2IP限制访问
1.4.3设置请求间隔
1.4.4通过参数加密和JavaScript脚本
1.4.5通过robots.txt来限制爬虫
前  言
现阶段,随着大数据和人工智能技术的研究不断深入发展,网络数据采集与清洗越来越具有较为广泛的应用范围。本书是为“数据采集与清洗”课程编写的教材,其内容选取符合教学大纲要求,以案例驱动展开,兼顾内容的广度和深度,适用面广。
本书的第1章主要阐述网络爬虫的基本概念、基本流程、爬虫合法性问题、反爬虫技术以及爬虫的预备知识。第2~9章主要讲解爬虫的各种技术,分别讨论Requests库、JSON数据爬取、XPath解析及网页数据爬取、IP代理、Selenium库、Selenium与Requests结合使用、异步爬虫、正则表达式等基本技术的实现; 爬取的内容包括HTML文档、JSON数据、图片、音频、视频,以及这些类型数据的持久化保存。第10章讲解数据的简单清洗。第11章讲解一个综合案例,结合Requests和Selenium,分别采用单线程和多线程实现对不同网站的数据爬取,并进行相应的数据清洗操作。

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

产品特色

编辑推荐

从实战出发,适合初学者,紧跟 章节案例,理清代码实现,很快掌握编写Python爬虫程序。

 
内容简介

本书主要以纯案例驱动的形式,分别使用和结合使用requests库、selenium库,从互联网上收集数据。主要内容包括收集静态网页数据,网页解析,JSON数据,JSON解析,多级翻页,cookie和session,验证登录,多线程,数据的存储,收集到的数据包括静态网页数据、json、图片、音频、视频等数据,并对获取的数据进行清洗。适合Python初学者,也适合研究Python的广大科研人员、学者、工程技术人员。本教材采用纯的案例,和简单的注释,其他一些先修的知识是在其他课程有开设。

作者简介

韩莹,防灾科技学院教师,讲授“数据科学与大数据”课程,本教材采用纯的案例,和简单的注释,其他一些先修的知识是在其他课程有开设。

目  录
第1章绪论
1.1网络爬虫的基本概念
1.2网络爬虫的基本流程
1.2.1发起请求
1.2.2获取响应内容
1.2.3解析内容
1.2.4持久化保存数据
1.3网络爬虫的合法性问题
1.4反爬虫技术
1.4.1Useragent控制访问
1.4.2IP限制访问
1.4.3设置请求间隔
1.4.4通过参数加密和JavaScript脚本
1.4.5通过robots.txt来限制爬虫
前  言
现阶段,随着大数据和人工智能技术的研究不断深入发展,网络数据采集与清洗越来越具有较为广泛的应用范围。本书是为“数据采集与清洗”课程编写的教材,其内容选取符合教学大纲要求,以案例驱动展开,兼顾内容的广度和深度,适用面广。
本书的第1章主要阐述网络爬虫的基本概念、基本流程、爬虫合法性问题、反爬虫技术以及爬虫的预备知识。第2~9章主要讲解爬虫的各种技术,分别讨论Requests库、JSON数据爬取、XPath解析及网页数据爬取、IP代理、Selenium库、Selenium与Requests结合使用、异步爬虫、正则表达式等基本技术的实现; 爬取的内容包括HTML文档、JSON数据、图片、音频、视频,以及这些类型数据的持久化保存。第10章讲解数据的简单清洗。第11章讲解一个综合案例,结合Requests和Selenium,分别采用单线程和多线程实现对不同网站的数据爬取,并进行相应的数据清洗操作。

Shipping Overview: 

Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

International Shipping: Currently, we only ship within the USA. 

Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

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