Is there a list somewhere of recommendations of different Python-based REST frameworks for use on the serverside to write your own RESTful APIs? Preferably with pros and cons.
Please feel free to add recommendations here. :)
I don't see any reason to use Django just to expose a REST api, there are lighter and more flexible solutions. Django carries a lot of other things to the table, that are not always needed. For sure not needed if you only want to expose some code as a REST service. 
My personal experience, fwiw, is that once you have a one-size-fits-all framework, you'll start to use its ORM, its plugins, etc. just because it's easy, and in no time you end up having a dependency that is very hard to get rid of.
Choosing a web framework is a tough decision, and I would avoid picking a full stack solution just to expose a REST api. 
Now, if you really need/want to use Django, then Piston is a nice REST framework for django apps.
That being said, CherryPy looks really nice too, but seems more RPC than REST.
Looking at the samples (I never used it), probably web.py is the best and cleanest if you only need REST.
Recommendations of Python REST (web services) framework?