def artifact_operation(self, _dict):
        if not _dict:
            resp = BadRequest("Missing query")
            return resp(self.environ, self.start_response)
        else:
            # exchange artifact for request
            request = IDP.artifact2message(_dict["SAMLart"], "spsso")
            try:
                return self.do(request, BINDING_HTTP_ARTIFACT,
                               _dict["RelayState"])
            except __HOLE__:
                return self.do(request, BINDING_HTTP_ARTIFACT)
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/pysaml2-2.4.0/example/idp2_repoze/idp.py/Service.artifact_operation