Ren'Py Spritesheet Functions/Mechanism in RenPy?

[Sepheyer]

Can RenPy extract regions of spritesheets and use them as images? I have something like this in mind (attached) with 126 sub images total, where slicing and dicing the spritesheet into individual images is a task I'd rather avoid for a few good reasons.

I am thinking I can iterate and use im.Crop, but was wondering if there was a native mechanism. Thanks!