ints = filter(lambda x: isinstance(x, (int, long)), role_filter)
strs = filter(lambda x: isinstance(x, StringTypes), role_filter)
role_filter = Filter(Role.fields, {'role_id': ints, 'name': strs})
ints = filter(lambda x: isinstance(x, (int, long)), role_filter)
strs = filter(lambda x: isinstance(x, StringTypes), role_filter)
role_filter = Filter(Role.fields, {'role_id': ints, 'name': strs})