def challengeResponse(self, secret, chal):
        response = hmac.HMAC(secret, chal).hexdigest()
        return (self.user, response) % '%s %s'
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/mail/imap4.py/CramMD5ClientAuthenticator.challengeResponse/swapped operands of `%`