All of those websites are primarily made of HTML, CSS, and JavaScript. Now, Python is a fairly simple language that emphasizes natural language. It is easy to learn and free to use.

The popular and well-regarded Django framework has been around since 2005. It is compatible with any 2.x Python from 2.4 onward, though 2.7 is recommended.

Not surprisingly, the experience of using Python, Django, and HTMX together is comparable to using HTMX with Java and Spring Boot or JavaScript and Express, or C# and .Net.