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catalogue   1, Function 1. Function function 2. Use steps of function 3. Function parameters 4. Function return value function 5. Application: calculate the sum of any two numbers and save the results 6. Documentation for functions 7. Nested calls to functions 8. Variable scope 9. Function parameters 10. Unpacking 11. Quote 2, App ...

Depth first search maze problem Video learning link: https://www.bilibili.com/video/BV1pk4y1z76B Depth first search: referred to as dfs, is a classic search algorithm. Recursive review We have studied recursion before. We have implemented some algorithms using recursion: # 1. Recursive factorial # n! = 1*2*3*4******n def factorial(n): ...

For small partners who have just come into contact with mobile UI automation, we should all start with appium, but appium needs a troublesome environment and is relatively troublesome to use (to obtain elements, we need to use adb's uiautomatorview2). Today, Xiaobian recommends a super easy-to-use library. Compared with appium, it's a "laz ...

This article is only for technical learning. Welcome to reprint it. Please indicate the source Because my friend needs scenic spot data to participate in mathematical modeling, and I just know a little, so I helped him write crawler code. Some crawler methods were found on the Internet, but when obtaining the scenic spot ID, it was found ...

previously on 1.Basic learning notes and after-school exercises of MOOCPython language programming in University of China for 1-4 weeks (Nanjing University of Posts and Telecommunications) 2.Basic learning notes and after-school exercises of MOOCPython language programming in University of China for 5-6 weeks (Nanjing University of Posts ...

Business scenario Recently, I received a small demand in the company, which needs to expand the existing trial user application rules. Our scenario is roughly as follows: if (Overseas users) {  return false; } if (Billing user) {   return false; } if (Unpaid user && No longer service period) {   return false } if (Transfer to intro ...

It's said that linux raised the right, but when sorting out, you involuntarily wrote the contents of windows, which turned into a hodgepodge. You don't know whether it's good or bad https://github.com/sagishahar/lpeworkshop Windows Rights: ​ FuzzySecurity | Windows Privilege Escalation Fundamentals ​ https://github.com/netbiosX/Checklis ...

Source: https://iyinst.github.io/2021/05/19/%E6%9C%BA%E5%99%A8%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0-%E6%89%8B%E6%92%95GBDT/ The principle of gradient lifting decision tree (GBDT) will not be repeated. Unfamiliar students can refer to Mr. Li Hang's statistical learning method. Here is an implementation of GBDT. Before coding, we should first co ...

Python quick start multithreading and multiprocessing   Multithreading Meaning of multithreading Process can be understood as a program unit that can run independently. For example, opening a browser opens a browser process; Open a text editor, which opens a text editor process. But a process can handle many things at the same time. For exa ...

Hello, guys, the first two blog cases basically introduced the basic process of crawler. This blog began to put a heavy bomb, and the difficulty coefficient increased a little (difficulty 1: involving secondary page crawling, difficulty 2: crawling a total of 16 fields). The main content of this article: Take Shijiazhuang City as an example, cr ...