gistfile1.py

            # Restrict layer list, if requested
            if self.layers and self.layers != self.name:
                layers = self.layers.split(",")
                for layer_num in range(len(m.layers)-1, -1, -1):
                    l = m.layers[layer_num]
                    if l.name not in layers:
                        del m.layers[layer_num]
                        if self.debug:
                            print >>sys.stderr, "Removed layer %s loaded from %s, not in list: %s" % (l.name, self.mapfile, layers)