def resultsFor( self, ps ):
k = self._parametersAsIndex(ps)<EOL>if k in self._results.keys():<EOL><INDENT>return [ res for res in self._results[k] if isinstance(res, dict) ]<EOL><DEDENT>else:<EOL><INDENT>return []<EOL><DEDENT>
Retrieve a list of all results associated with the given parameters.

        :param ps: the parameters
        :returns: a list of results, which may be empty