test

selNode = nuke.selectedNode()
myset = set()

for i in selNode.channels():
    i = i.split('.')[0]
    myset.add(i)

for n in sorted(myset):
    if n == 'rgba': continue

    myshuffle = nuke.nodes.Shuffle(name='%s' % n)
    myshuffle['in'].setValue(n)
    myshuffle.setInput(0, selNode)
    print n