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Write in front Recently, many teachers in the school use cloud class. After a course, what should they do if they want to see the students' homework (submitted in the form of activities)? Cloud class does not provide batch download for students. In addition, a teacher's newly released teaching task has set that the video is not allowed to ...

Series selection Python crawlers are slow? Concurrent programming to understand it Daemon thread In Python multithreading, after the code of the main thread runs, if there are other sub threads that have not been executed, the main thread will wait for the sub threads to execute before ending; This creates a problem. If a thread is ...

Ten thousand fans, I climbed all my fans, just to verify one thing preface The growth of fans and visits to CSDN blog sites is a very strange thing. If you don't blog, there will be almost no growth in fans. One or two days after you post a blog with a sufficient number of words, there will be a sudden change in the number of fans and visi ...

When you are a crawler, you will certainly encounter many verification code columns, such as image recognition mentioned in this paper:   When I was climbing the dragnet, I was too often jumped to the verification system. It was really annoying url=Secure access verification - pull hookhttps://sec.lagou.com/verify.html?e=2&f=https: ...

catalogue Introduction to Python concurrent programming 1. Why introduce concurrent programming? 2. What are the methods to speed up the program? 3.python support for concurrent programming   How to select multithreaded Thread, multiprocess Process and multiprocess Coroutine 1. What are CPU intensive computing and IO intensive comp ...

Scene reproduction Today, the weather is fine. My girlfriend suddenly wants to buy a bra, but I don't know what color is more beautiful. So I ordered me to analyze what color buyers benefit the public, discuss it, and reward it afterwards. Keywords in this paper Concurrent process 😊, IP blocked 😳, IP proxy 😏, Agent blocked 😭, A pla ...

WeChat official account: brother K crawler, QQ exchange group: 808574309, keep sharing crawler advance, JS/ Android reverse technology dry cargo! What is Hook? Hook is actually a system mechanism provided in windows to replace "interrupt" under DOS. The concept of hook is very common in Windows desktop software development, especi ...

preface Do you still remember the songs we sang in childhood and the voices of people we used to like today? As the mainstream singing software, national K song is deeply missed by me. Every time you visit the Internet, it's a pity if one day the other party deletes the song or becomes private. Today, I'm here to make a national k-song Downloa ...

preface Suddenly, I have a strong hunch that I will soon be able to use the crawler. After learning a little about python crawler these two days, I want to find a case to practice. Unfortunately, Douban has been selected. Who calls the HTML rendered by the server more interesting? Sorry, Douban get ready The packages used are requests ...

preface After a month, let's try to play a wave of Snake games automatically with the help of Hamilton ring. Let's start happily~ development tool **Python version: * * 3.6.4 Related modules: pygame module; And some python built-in modules. Environment construction Install Python and add it to the environment variable. pip can install t ...