'zoom': zoom, 'center': centerpoint, 'size': widthxheight, 'sensor':'false', 'format':'png', } mapimage = MapImage.all().filter('user ='******'s just a nightmare. mapimages = MapImage.all().order('last_updated').fetch(10) for mapimage in mapimages: if not mapimage.update_count: mapimage.update_count = 0