Programmer Group

First of all, the blog mainly introduces the background of writing this blog. 1, the main Chinese field that Bo deals with is this style: 01 hanging air conditioner 02 ordinary chair 02 ordinary curtain 03 desk - computer desk - office desk 04 Microwave oven-oven-dishwasher-sterilizer 05 Elect ...

### Crawler Architecture Dynamic Workflow The scheduler asks the url manager if it has a url to crawl and returns it to the scheduler if it does. If so, the scheduler takes a url to crawl from the url manager and the url manager returns the url to the scheduler. Now the scheduler gets the url. The sche ...

# Three login experiments 1 memu = { 2 "Shaanxi":{ 3 "Xi'an City":{ 4 "New urban area":["Daming Palace Site","Hanyuan Temple Site","Eighth Route Army Office"], 5 "Forest of steles":["Anbeilin Museum","Ming Dynasty City Wall","Little wild goose pagoda" ], 6 "Lianhu District":["bell to ...

I. Functional function 1. What is a function? Functions are organized, reusable code segments that implement a single, or related function. Functions can improve the modularity of applications and the reuse of code. 2. Definition of function Syntax: def functionname( parameters ): "function_Document string" function_suite re ...

Catalog Cookie and Session Session storage mechanism in Falsk Related Configurations Use the Flask-Session tripartite component Basic exercises Cookie and Session Cookie:#Storage size is limited, stored on the client, there is a security risk Cookies, meaning cookies, were proposed ...

Background: Recently on-line MQ consumer process ok, but rabbitmq console shows no consumption process, resulting in MQ queue message accumulation, previously directly restart mq, this decision to explore the reasons Operating time-consuming Daemons For business reasons, every time 30 W records ...

C++ is a good programming language. At the same time, C++ is a rugged road. I want to witness my growth here with you. I will share some cases, source code and learning experience with you from time to time every day. Case 1: Title Description: Enter a string to determine how many strings there are, ...

*sed implements some grep functionality, but it's a little more cumbersome, sed's strength is to delete the contents of the file and replace it sed implements grep retrieval: 1. Retrieve by keyword: [root@localhost ~]# sed -n '/root/'p passwd.txt * Retrieval with sed requires a -n parameter before the keyword, p after the keyword, and / or in ...

Article directory PNG Picture Format PNG file structure PNG Compression Principle PNG picture codec libpng PNG Picture Format PNG(Portable Network Graphics) is a rasterized, lossless compressed image file format. The purpose of the design is ...

Character string Character string String Format String Method Determines whether a string meets a specific condition Character string All standard sequence operations (index, slice, multiplication, membership check, length, minimum, and max ...