class DNSTest(TestCase):
- errcodes = {v: k for k, v in vars(dns).items() if k.startswith('DNS_RCODE_')}
+ errcodes = dict((v, k) for k, v in vars(dns).items() if k.startswith('DNS_RCODE_'))
def assert_dns_rcode_equals(self, packet, rcode):
"Helper function to check return code"