def __absolute__ ( self , uri ) : return op . abspath ( op . join ( self . __path__ , uri ) )
python rel to abs path
Get the absolute uri for a file
def __absolute__(self, uri):
        """ Get the absolute uri for a file

        :param uri: URI of the resource to be retrieved
        :return: Absolute Path
        """
        return op.abspath(op.join(self.__path__, uri))