Fix print() and xrange() for Python 3 (#5590)

certbot-compatibility-test/certbot_compatibility_test/test_driver.py

@@ -10,6 +10,8 @@ import sys
 
 import OpenSSL
 
+from six.moves import xrange  # pylint: disable=import-error,redefined-builtin
+
 from acme import challenges
 from acme import crypto_util
 from acme import messages

certbot-compatibility-test/certbot_compatibility_test/validator.py

@@ -5,6 +5,7 @@ import requests
 import zope.interface
 
 import six
+from six.moves import xrange  # pylint: disable=import-error,redefined-builtin
 
 from acme import crypto_util
 from acme import errors as acme_errors

certbot-compatibility-test/nginx/roundtrip.py

@@ -8,7 +8,7 @@ from certbot_nginx import nginxparser
 def roundtrip(stuff):
     success = True
     for t in stuff:
-        print t
+        print(t)
         if not os.path.isfile(t):
             continue
         with open(t, "r") as f: