Transfer Blendshapes Between Similar Meshes

import maya.cmds as cmds

selection = cmds.ls(sl=True)

if len(selection) > 0:
    targetMesh = selection[-1]
    affectedVertices = selection[0:-1] # Assume these are vtx (add some error checking)
    affectedMesh = cmds.listRelatives(cmds.listRelatives(affectedVertices[0], p=True), p=True)
    
    vtxSet = cmds.sets(affectedVertices, v=True, n="SelectionSet")
    print cmds.sets(vtxSet, q=True)
    
    # Move to origin
    cmds.move(32, 0, 0, affectedMesh, ws=True)
    cmds.move(32, 0, 0, targetMesh, ws=True)
    
    # Select target mesh and affected vertices
    cmds.select(cl=True)
    cmds.select(targetMesh)
    cmds.select(vtxSet, add=True)
    
    cmds.transferAttributes(transferPositions=1, transferNormals=1, transferUVs=2, transferColors=0, sourceUvSpace="map1", sampleSpace=3, searchMethod=0, flipUVs=0, colorBorders=1)
    
    cmds.hide(targetMesh)
    
    cmds.select(cl=True)
else:
    print "Select vertices to move and target mesh"