Writing templates without using html for ruby on rails/django

I hate to explicitly use html/css to build pages. Is there a template language I can use to semantically and quickly describe the layout and content of the page so that later I can generate html and css from it?

I'm planning to use this on a django site (but I guess if such solutio开发者_Go百科n already exists for RoR I can always adapt it).

Thanks.

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There's GRHML, which is HAML for Genshi. (Django adapter)