Programmer Group

Task 1: data collection Web page“ http://pm25.in/beijing ”It contains the air quality monitoring data of 12 monitoring points in Beijing. Please write a program to capture the monitoring points, AQI and air quality index categories on the web page (the web page samples are saved in the src1 directory under the source material folde ...

Document structure Misc24 BMP height change Tip: the flag is above the picture bmp format file The real flag is on the picture. You can see it by changing the height Misc25 PNG height change Tip: the flag is under the picture Just change the height misc26-crc32 Tip: the flag is still under the picture, but how much is it? Open t ...

This article uses 58 Tongcheng's recruitment website for reference to learn and crawl the encrypted part of the font 58 Tongcheng Recruitment As you can see from the diagram, the font information in the source code is replaced by question marks, so if you crawl normally, only those question marks will be crawled. Right-click the page and ...

Tip: after the article is written, the directory can be generated automatically. Please refer to the help document on the right for how to generate it preface Recently, I followed the dark horse programmer to learn the request crawler and successfully completed the batch processing of NCBI documents. The problem is that the crawling eff ...

1. Overview of Functions If you need a block of code several times when developing a program, in order to improve writing efficiency and code reuse, you organize code blocks with independent functions into a small module, which is a function. We've been exposed to a number of functions, such as input(), print(), range(), len(), and so on, ...

Uses of access.log logs Statistical access to ip sources and access frequency over a period of timeView most frequently visited pages, HTTP response status codes, interface performanceInterface seconds, minutes, hours and days Default Configuration Resolution nginx default log configuration #log_format main '$remote_addr - $remote_use ...

Easy campus to achieve automatic clock in Recently, Xiao Du came to a certain university in Yunnan and clocked in and reported his personal information on Yi campus every day. This wave of operation really made my scalp numb, so I made a living and wanted to punch in automatically. The principle is similar to the previous automatic punch in p ...

1, Definition of method Methods are organized, reusable code snippets used to implement a single, or associated function. This method can improve the modularity of application and the reuse rate of code. Python provides many built-in methods, such as print(). You can also create your own methods, which are called user-defined methods. 2, ...