Convert UV shells to hard edges

shellsToUVs

import maya.api.OpenMaya as om2
import maya.cmds as mc

sel = om2.MSelectionList()
sel = om2.MGlobal.getActiveSelectionList()
for s in range( sel.length() ):
	dp, comp = sel.getComponent( s )
	mItVtx = om2.MItMeshPolygon( sel.getDagPath(s) )
	uvsCount = om2.MFnMesh(sel.getDagPath(s)).numUVs()			
	dag = sel.getDagPath(s).extendToShape()
	shapeUVIDs = om2.MFnMesh(dag).getUvShellsIds()
	
	for n in range(shapeUVIDs[0]):
		faces = mc.polyListComponentConversion( [ dag.partialPathName() + '.map[%i]' %x for x,v in enumerate(shapeUVIDs[1]) if v == n ], fuv=1, tf=1 )
		edges = mc.polyListComponentConversion( faces, ff=1, te=1, bo=1 )
		mc.polySoftEdge( edges, a=0, ch=1 )