ShuffleRawFiles.

def createLayerShuffles(node):

    # thanks to Peter Hartwig for this code
    
    channels = node.channels()
    layers = list( set([c.split('.')[0] for c in channels]) )
    for layer in layers:
        if not "Obj" in layer:
            if not "MtlID" in layer:
                if "Raw" in layer or  "DiffuseFilter" in layer:
                    shuffleNode = nuke.nodes.Shuffle( label=layer, inputs=[node] )
                    shuffleNode['in'].setValue( layer )
                    shuffleNode['postage_stamp'].setValue( True )
                    removeNode = nuke.nodes.Remove(inputs = [shuffleNode])
                    removeNode['operation'].setValue('keep')
                    removeNode['channels'].setValue('rgb')

createLayerShuffles(nuke.toNode("Read2"))