Select objects with no smoothing group

This works for me:

(
	obj = selection[1]
	facesBA = #{1..(polyop.GetNumFaces obj)}
	noSMGFacesArr = for f in facesBA where (polyop.getFaceSmoothGroup obj f) == 0 collect f
	if noSMGFacesArr.count != 0 do
		polyop.setFaceSelection obj noSMGFacesArr
	redrawViews()
)

he needs to select objects not faces ;)

NodesWithNoSGfaces = for obj in selection where canConvertTo obj Editable_mesh collect
(
	local found = false
	local tri = snapshotAsMesh obj
	
	for f=1 to tri.numfaces while not found where getFaceSmoothGroup tri f == 0 do
	(
		found = true
	)
	
	free tri
	
	if found then obj else dontCollect	
)

select NodesWithNoSGfaces

Yep. My bad. :)

@jahman
Thank you man! This works great!! like charm!!

And
@miauu
I have posted this thread expecting your replay actually.
and you make it!. you have done reading my mind becoz when i tried to find objects and i will surely look for culprit polygons with noSG. thaks.

Both script is important!!

Most important is that you have working tools.

@miauu:
I searched exactly such feature - to check if all polygons has smooth groups before export. Work good in 2020. Thanks :)

I am glad that the script is useful to you. :)