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How to manage Let's Encrypt SSL/TLS certificates with certbot

Let's Encrypt is an automated and open certificate authority (CA) operated by the Internet Security Research Group (ISRG) and founded by the Electronic Frontier Foundation (EFF), the Mozilla Foundation, and others. It provides free SSL/TLS certificates which are commonly used to encrypt communications for security and privacy purposes, the most notable use case being HTTPS. Let's Encrypt relies on the ACME (Automatic Certificate...

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Talk Concurrency with Carl Hewitt

The last in our trio of concurrency one-on-one interviews is Carl Hewitt; the designer of logic programming language Planner. Also known for Actor models, Carl does a fantastic job of describing how he and others came up with Planner, and where he feels concurrency will go from here. About Carl Hewitt Carl has been highly influential in the development of logic, functional and concurrent programming, with his most recognisable work...

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05beautifulsop traverses the document book and searches the document tree

BeautifulSoup I. what is beautiful soup BS4 is a parsing library, which can help us extract the desired data through some kind of parser. Why use BS4 Because it can quickly extract what users want with simple syntax Three, installation # Install beautiful soup4 pip3 install beautifulsoup4 # Install resolver # According to the official website, lxml is recommended. pip3 install lxml IV. basic use from bs4 import BeautifulSoup html_doc...