Python Driven Animation

Not everything can be keyframed, but almost everything can. There are benefits to keyframing, but it isn't always necessary. This short example shows how to use frame_change_pre handler, it is called on every frame change. This means if you have something you want to change as a function of time or frame number, that you can do this very easily. This works on text body too. Search blender API docs for more information about frame_change_pre. You could even combine the frame_change_pre with setting and adding keyframes, but unless you want to export the animation - that might be overkill.

While debugging, you might find that you are calling successive versions of a function from the event handler. There might be more efficient ways of fixing this, but i've found this method removes 'old' code from the event handler list just fine.