def parse_error(self):
        if self.status is not httplib.UNAUTHORIZED:
            data = self.parse_body()
            raise InvalidCredsError(data['code'] + ': ' + data['message'])
        return self.body
dataset/ETHPy150Open apache/libcloud/libcloud/compute/drivers/joyent.py/JoyentResponse.parse_error/operator `==` -> `is not`