Lack of integration between Python and Jinja2 is currently one of  most annoying developer experience issues, besides UV not supporting putting frozen dependencies in wheels.

But the issue is bigger than just the LSP. There's also no linting, no type checks... Nothing.

What would be really cool is to compile a template into a Python file as a separate build step, much as I don't like separate build steps, make the generated file readable and contain all the original templates code as comments, and then use that directly so you never have to leave just regular old Python, and all your code quality tools work.

Writing the template would still be annoying, so you'd ideally have LSP support still.

But in reality, I've been really enjoying pure client side templating with only APIs and static resources on the server.