I have a long list of normals as a list of tuples in my python script.

[(nx, ny, nz), (nx, ny, nz), (nx, ny, nz)...]

Each tuple represents the direction I want a sun lamp to point for that particular frame of animation.

How do I set and keyframe the direction of a sun lamp using normal?

Is there a straightforward python method - maybe in mathutils - that would set sun lamp's matrix so that it points in the direction of a vector? I've looked there but nothing stands out as far as I can see, though I'm a mathutils noob.

No nodes or plugins, thanks!

It seems this should be easy - I have a long list of normals as a list of tuples in my python script.

[(nx, ny, nz), (nx, ny, nz), (nx, ny, nz)...]

Each tuple represents the direction I want a sun lamp to point for that particular frame of animation.

How do I set the direction of a sun lamp using a vector?

Is there a straightforward python method - maybe in mathutils - that would set sun lamp's matrix so that it points in the direction of the vector?

I've looked there but nothing stands out as far as I can see, though I'm a mathutils noob.

No nodes or plugins, thanks!