作者：耿兴隆
页数：220
出版社：电子工业出版社
出版日期：2023
ISBN：9787121438103
电子书格式：pdf/epub/txt
内容简介
本书介绍如何结合Python进行网络爬虫程序的开发，从Python语言的基本特性入手，详细介绍了Python网络爬虫开发的各个方面，涉及HTTP、HTML、JavaScript、正则表达式、自然语言处理、数据科学等不同领域的内容。全书共10章，包括Python基础知识、网站分析、网页解析、Python文件读写、Python与数据库、AJAX技术、模拟登录、文本与数据分析、网站测试、Scrapy爬虫框架、爬虫性能等多个主题。本书可作为高等职业院校计算机类专业的专业课教材，也可供计算机相关从业人员选用参考。
作者简介
耿兴隆，Autodesk中国认证考试中心首席专家，全面负责Autodesk中国官方认证考试大纲制定、题库建设、技术咨询和师资力量培训工作。其创作的很多教材成为国内具有引导性的旗帜作品，在国内相关专业方向图书创作领域具有举足轻重的地位。
目录
目录
项目一 Python 基础认知 ····················································································.1
任务一 Python 概述 ·······································································································.1
一、Python 简介 ······································································································.1
二、安装Python ······································································································.2
三、安装PyCharm ···································································································.6
四、Python 语法规范 ·······························································································.11
任务二 Python 命令的组成 ·····························································································.13
一、基本符号 ·········································································································.14
二、常量与变量 ······································································································.16
三、数据类型 ·········································································································.19
四、功能符号 ·········································································································.24
任务三 程序结构 ·········································································································.26
一、表达式语句 ······································································································.26
二、顺序结构 ·········································································································.27
三、选择结构 ·········································································································.28
四、循环结构 ·········································································································.30
五、条件表达式 ······································································································.31
六、程序的流程控制 ································································································.32
项目实战 ·····················································································································.33
实战 输出百度网址 ································································································.33
项目二 网络爬虫基础认知 ················································································.35
任务一 网络爬虫概述 ···································································································.35
一、网络爬虫的基本原理 ··························································································.36
二、网络爬虫系统框架 ·····························································································.37
三、爬行策略 ·········································································································.37
四、网络爬虫的分类 ································································································.38
五、开源网络爬虫框架/项目 ······················································································.39
任务二 HTTP ·············································································································.41
一、HTTP 的工作原理 ·····························································································.41
二、Urllib 模块库 ···································································································.42
三、URL 定义 ·······································································································.43
四、URL 编码设置 ·································································································.47
任务三 网页请求过程 ···································································································.50
一、发送请求报文 ··································································································.51
二、返回响应 ········································································································.52
三、HTTP 消息 ··········································································
项目一 Python 基础认知 ····················································································.1
任务一 Python 概述 ·······································································································.1
一、Python 简介 ······································································································.1
二、安装Python ······································································································.2
三、安装PyCharm ···································································································.6
四、Python 语法规范 ·······························································································.11
任务二 Python 命令的组成 ·····························································································.13
一、基本符号 ·········································································································.14
二、常量与变量 ······································································································.16
三、数据类型 ·········································································································.19
四、功能符号 ·········································································································.24
任务三 程序结构 ·········································································································.26
一、表达式语句 ······································································································.26
二、顺序结构 ·········································································································.27
三、选择结构 ·········································································································.28
四、循环结构 ·········································································································.30
五、条件表达式 ······································································································.31
六、程序的流程控制 ································································································.32
项目实战 ·····················································································································.33
实战 输出百度网址 ································································································.33
项目二 网络爬虫基础认知 ················································································.35
任务一 网络爬虫概述 ···································································································.35
一、网络爬虫的基本原理 ··························································································.36
二、网络爬虫系统框架 ·····························································································.37
三、爬行策略 ·········································································································.37
四、网络爬虫的分类 ································································································.38
五、开源网络爬虫框架/项目 ······················································································.39
任务二 HTTP ·············································································································.41
一、HTTP 的工作原理 ·····························································································.41
二、Urllib 模块库 ···································································································.42
三、URL 定义 ·······································································································.43
四、URL 编码设置 ·································································································.47
任务三 网页请求过程 ···································································································.50
一、发送请求报文 ··································································································.51
二、返回响应 ········································································································.52
三、HTTP 消息 ··········································································
