blender export to renderman

anybody have a good script that can export to renderman? all the ones ive found either dont work or only work for old versions of blender.

https://blenderartists.org/forum/viewtopic.php?t=27968

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There’s a very good open source Renderman exporter called liquid. It’s designed for Maya and I dabbled with it but I wonder how hard it would be to port to Python. It would cut down the code a lot for one thing. That exporter has been used on a few major films (e.g. Lord of the Rings) so at least it has been proven to support necessary output features: