Assign Each Object To Separate Layer

assign_to_layers.py

### assign_to_layers.py
### Kelly Yu

import maya.cmds as cmds

cmds.select(clear=1)
# get slices
bunny_slices = cmds.ls('polySurface*')
# remove surface shapes
bunny_slices = [s for s in bunny_slices if 'Shape' not in s]

# for each slice:
for slice in bunny_slices:
    # get ymin and ymax
    ((_,_), (ymin,ymax), (_,_)) = cmds.polyEvaluate(slice, boundingBox=True)
    # get slice index based on ymin and ymax; using zfill to make 1 -> 001 for easier layer sorting later
    slice_number = str(int(ymax/0.135 + 1)).zfill(3)
    # rename the slice
    cmds.select(slice, r=True)
    cmds.rename('bunny_slice_' + slice_number)
    # add slice to new layer
    layer_name = 'slice_' + slice_number
    cmds.createDisplayLayer(name=layer_name)