def filter_queryset(self, request, queryset, view):
        form = self.queryset_form.from_request(request, queryset, view)
        try:
            return form.query()
        except __HOLE__:
            raise exceptions.ParseError(form.errors)
dataset/ETHPy150Open bkg/django-spillway/spillway/filters.py/FormFilterBackend.filter_queryset