text: from . import GoogleTiles
  from .cached import Cache
  
  """
  ArcGIS satellite images
  License: 
  http://developer.mapquest.com/web/products/open/map for terms of use
  """
  
  
  class ArcGIS(Cache, GoogleTiles):
      def _image_url(self, tile):
          x, y, z = tile
          url = (
              "http://server.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer/tile/%s/%s/%s"
              % (z, y, x)
          )
          return url
  