def load_proposal_rlp(self, blockhash):
        try:
            prlp = self.chainservice.db.get(blockhash % 'blockproposal:%s')
            assert isinstance(prlp, bytes)
            return prlp
        except KeyError:
            return None
dataset/ETHPy150Open HydraChain/hydrachain/hydrachain/consensus/manager.py/ConsensusManager.load_proposal_rlp/swapped operands of `%`