code: def makeRenderer(rdrid, dp, refresh=False):
      
      try:
          return available_renderers[rdrid][0](dp, refresh=refresh)
      except:
          print("""Error creating renderer %s for %s:""" % (rdrid, dp.fullpath))
          traceback.print_exc()
          return DefaultRenderer(dp)
docs: Creates a renderer object with the given rdrid, and attaches it the given DP.
      Failing that, creates a default renderer.