title: In Maya, using Python or Mel, how to find objects with no UV shells
body: <p>I am trying to make a script that scans through all the mesh objects in a Maya scene and returns objects that have no UV shells. I've written a script that works...it uses the command findUvShells, but apparently for this application that particular command is agonizingly slow. </p>
  
  <p>Is there an OpenMaya way to do it, or a faster command to use?  I used this script on one of our simpler characters...who has only 1 mesh object...and it took over a minute to tell me that there were no objects with 0 UV shells. </p>
  
  <pre><code>def FindObjectsWithNoUVShells():    
      ObjectsWithNoUVShells = []
      OldSel = mc.ls(sl=True)
      Geo = mc.ls(typ="mesh")
      for Obj in Geo:
          mc.select(Obj)
          AllUVSets = (mc.polyUVSet(Obj, q=True, allUVSets=True))
          UVSet = AllUVSets[0]
          if (findUvShells(uvSet=UVSet)[1]) == 0:
              ObjectsWithNoUVShells.append(Obj)
      mc.select(OldSel)
  
      return (len(ObjectsWithNoUVShells) &gt; 0), ObjectsWithNoUVShells
  
  FindObjectsWithNoUVShells()
  </code></pre>