Yes, this works, and should keep working -- though I don't understand
in what situation you need this -- why can't you do something like
call_object(getattr(obj, "methodname"), args)
> I still can't figure out, however, how to create a new instance of a class.
> Passing in the unbound __init__ method doesn't work sine there is no class
> instance to pass in as the first argument so call_function() refuses to
> invoke the function it was asked to.
> I've located newinstanceobject() in Objects/classobject.c which I believe
> will do what I want, but is this a recommended interface?
Well, this works, but what's better is to use this:
> In general, would it be possible to document these C interfaces
> somewhere besides in the code so that if they change in the future
> there will be a single point of reference for what you may and may
> not count on being available from within a C program?
I guess unless I get some volunteer help this will have to wait a
while. For now, most operations announced in Include/*object.h are
reasonably safe. Stuff for which you can find examples of use
anywhere in the Modules directory should especially be fairly safe...
> Again - Kudos to Guido and his associates for making it so easy to locate
> desired functions in the source code and making them really understandable!
Thanks... So it seems you can live without documentation a little
--Guido van Rossum, CWI, Amsterdam <Guido.van.Rossum@cwi.nl>