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Playwright is a new generation released by Microsoft in early 2020 automated testing Compared with Selenium, which is the most commonly used tool at present, it can automatically execute the automation operations of mainstream browsers such as Chromium, Firefox and WebKit with only one API. As a pure automation tool for Python language, it can ...

catalogue 1. requests headers Send request2. selenium simulation uses browser camouflage headers3. requests use ip Proxy send request4. selenium webdriver uses proxy ip In the process of writing crawlers, some websites will set up anti crawling mechanism to refuse to respond to non browser access; Or frequent crawling in a short time will ...

IntroductionIn the previous article, the "animation" scheme was used to realize the bullet screen effect. The container control was customized. Each bullet screen was used as its sub control, and the initial position of the bullet screen was placed outside the right side of the container control. Each bullet screen was translated thro ...

JavaScript tutorial Introduction to JavaScript JavaScript is a high-level programming language, which is executed by interpretation. It is a dynamic type, object-oriented (prototype based) interpretation language. JavaScript is a language based on prototype and function first. It is a multi paradigm language. It supports object-oriented progr ...

catalogue   1, AJAX technology introduction 2, Introduction and use of JSON 1. Convert dictionary to JSON 2. Convert JSON to dictionary 3, Crawling dynamic data 1. Find in the web page source code 2. Use the Chrome check tool to find valid requests 3. Find the target link 4. Analyze the url structure Get the data on the current page ...

Target: 51job Don't ask me why I climb this, because my technical ability is limited. Very limited. Very limited. 1. Let's see what useful information this website has first. Area, it must be necessary. Where else can I find a job. Why are you looking for a job? What do you say. Directly climb more than 50000, manual funny. Total page ...

Foreword Python is a high-level programming language with interpretive, object-oriented and dynamic data types. It was invented by Guido van Rossum at the end of 1989 and the first public release was released in 1991. Since its launch, Python has been welcomed by the majority of developers. It has its excellence in the fields of website develo ...

This article mainly introduces the example of Python crawling Jingdong Laptop Data Based on scratch and simple processing and analysis, so as to help you better understand and learn to use python. Interested friends can understand 1, Environmental preparation python3.8.3pycharmThird party packages required for the project pip install scrap ...

urllib urllib is a built-in HTTP request Library in python. I don't think it's commonly used now. It's not easy to use, but I know the basis of crawlers Four modules urllib.request: request moduleurllib.error: exception handling module (ensure that the program will not terminate unexpectedly)urllib.parse: url parsing module (split, merge, etc. ...

Request de duplication This is a high-frequency interview question for reptile post: Q: How does the sweep remove duplicate requests? What is the de duplication principle? How does the request calculate uniqueness? With this question, enter today's theme. DUPEFILTER_CLASS In the scene project configuration, DUPEFILTER_CLASS is the setting ...