Reconstruct Subdiv for Maya

unsmoothMesh.py

#---------Reconstruct Subdiv Script for Maya----------
#Script by - Kanishk Chouhan
#Email - kanishk2391@gmail.com
#Blog - www.pixel-architect.blogspot.com

#Description - 
#This script allows u to reverse the result of smooth operation in maya after deleting the history
#It also preserves the original UV of the mesh
#Select the mesh u want to unsmooth and execute the script
#Script might take some time to execute depending on the polycount...

import maya.cmds as cmds
import maya.mel as mel

#Get the selected mesh
selectedMesh=cmds.ls( selection=True )[0]
#Get the vertex count i.e. vertex id of last vertex...
vertexCount=cmds.polyEvaluate( v=True )
vertexId = selectedMesh+'.vtx['+str(vertexCount)+']'
cmds.select(vertexId)
#Convert selection to edges...
x=cmds.polyListComponentConversion( fv=True,te=True )
cmds.select(x)

#get the edges number...
k=x[0].rfind(']')
l=x[0].rfind('[')
start = x[0][l+1:]
edges = str(start[:-1])
colon = edges.split(':')

#Select edge loops and rings...
mel.eval('SelectEdgeLoopSp;')
mel.eval('polySelectEdgesEveryN "edgeRing" 2;')
mel.eval('SelectEdgeLoopSp;')
mel.eval('SelectEdgeLoopSp;')
mel.eval('SelectEdgeLoopSp;')
mel.eval('polySelectEdgesEveryN "edgeRing" 2;')

#Delete the selected edgeloops
cmds.polyDelEdge( cv=True )

cmds.select(selectedMesh)