Sure enough, there is. An emerging family of Python web frameworks let you write declarative Python code on the back end that programmatically generates front-end code.

The framework also integrates with external tools via its Tool and Example abstractions. For instance, you can incorporate a web search or database lookup as part of a pipeline, or enforce output ...

The display capabilities in HTML and CSS (possibly supported with JavaScript and JavaScript-based frameworks, for example for animations and data binding) essentially correspond to what eXtensible ...