What book should I buy to learn Python crawler?
What books do I need to buy to learn python crawler? The following article will recommend several books for learning python crawlers. I hope it will be helpful to you.
"Python Network Data Collection"
The author is an expert in this field, the code is beautiful and concise, and it is easy to use. Quantitative recursive algorithms and regular expressions, this book makes good use of Python to complete the entire process from data crawling to data cleaning. What is even more rare is that python3 is used for engineering practice instead of just explaining the syntax.
"Write Your Own Web Crawler"
In addition to introducing the basic principles of crawlers, including priorities, breadth-first search, distributed crawlers, and multi-threading, this book also There is cloud computing, data mining content. It's just implemented in java, but the idea is the same.
"Mastering Python Web Crawler: Core Technology, Framework and Project Practice"
The code of this book is all based on Python3. This book starts from scratch based on Python. Gradually deepening, and then moving to the crawler framework, anti-crawling, and project wiping, it helps readers build a complete knowledge system, which is very suitable for novices and readers who are new to crawlers.
"Python3 Web Crawler Development Practice"
This book introduces how to use Python 3 to develop web crawlers. The book first introduces the environment configuration and basic knowledge, and then discusses It introduces urllib, requests, regular expressions, Beautiful Soup, XPath, pyquery, data storage, Ajax data crawling, etc., and then introduces how to implement data crawling in different scenarios through multiple cases, and then introduces the pyspider framework and Scrapy framework. and distributed crawlers. This book is suitable for Python programmers to read.
"Writing a Web Crawler in Python"
This book covers all the basics and covers all aspects required to write a crawler. Because the code cases are relatively The bottom layer, so it is suitable for friends who have a certain Python foundation.
The above is the detailed content of What book should I buy to learn Python crawler?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The speed of mobile XML to PDF depends on the following factors: the complexity of XML structure. Mobile hardware configuration conversion method (library, algorithm) code quality optimization methods (select efficient libraries, optimize algorithms, cache data, and utilize multi-threading). Overall, there is no absolute answer and it needs to be optimized according to the specific situation.

It is impossible to complete XML to PDF conversion directly on your phone with a single application. It is necessary to use cloud services, which can be achieved through two steps: 1. Convert XML to PDF in the cloud, 2. Access or download the converted PDF file on the mobile phone.

There is no built-in sum function in C language, so it needs to be written by yourself. Sum can be achieved by traversing the array and accumulating elements: Loop version: Sum is calculated using for loop and array length. Pointer version: Use pointers to point to array elements, and efficient summing is achieved through self-increment pointers. Dynamically allocate array version: Dynamically allocate arrays and manage memory yourself, ensuring that allocated memory is freed to prevent memory leaks.

There is no APP that can convert all XML files into PDFs because the XML structure is flexible and diverse. The core of XML to PDF is to convert the data structure into a page layout, which requires parsing XML and generating PDF. Common methods include parsing XML using Python libraries such as ElementTree and generating PDFs using ReportLab library. For complex XML, it may be necessary to use XSLT transformation structures. When optimizing performance, consider using multithreaded or multiprocesses and select the appropriate library.

It is not easy to convert XML to PDF directly on your phone, but it can be achieved with the help of cloud services. It is recommended to use a lightweight mobile app to upload XML files and receive generated PDFs, and convert them with cloud APIs. Cloud APIs use serverless computing services, and choosing the right platform is crucial. Complexity, error handling, security, and optimization strategies need to be considered when handling XML parsing and PDF generation. The entire process requires the front-end app and the back-end API to work together, and it requires some understanding of a variety of technologies.

XML can be converted to images by using an XSLT converter or image library. XSLT Converter: Use an XSLT processor and stylesheet to convert XML to images. Image Library: Use libraries such as PIL or ImageMagick to create images from XML data, such as drawing shapes and text.

Convert XML to PDF with high quality on your mobile phone requires: parsing XML in the cloud and generating PDFs using a serverless computing platform. Choose efficient XML parser and PDF generation library. Handle errors correctly. Make full use of cloud computing power to avoid heavy tasks on your phone. Adjust complexity according to requirements, including processing complex XML structures, generating multi-page PDFs, and adding images. Print log information to help debug. Optimize performance, select efficient parsers and PDF libraries, and may use asynchronous programming or preprocessing XML data. Ensure good code quality and maintainability.

Converting XML to PDF directly on Android phones cannot be achieved through the built-in features. You need to save the country through the following steps: convert XML data to formats recognized by the PDF generator (such as text or HTML); convert HTML to PDF using HTML generation libraries such as Flying Saucer.
