Apply Python 3 futurize transform libmodernize.fixes.fix_xrange_six

Refer to #256

assets/favicon/generate

@@ -1,6 +1,8 @@
 #!/usr/bin/env python2.7
+from __future__ import absolute_import
 import xml.etree.ElementTree as ET
 import subprocess
+from six.moves import range
 
 # Generates the favicon images containing unread message counts.
 
@@ -10,7 +12,7 @@ elems = [tree.getroot().findall(
     ".//*[@id='%s']/{http://www.w3.org/2000/svg}tspan" % (name,))[0]
      for name in ('number_back', 'number_front')]
 
-for i in xrange(1, 100):
+for i in range(1, 100):
     # Prepare a modified SVG
     s = '%2d' % (i,)
     for e in elems:

bots/check-mirroring

@@ -1,5 +1,6 @@
 #!/usr/bin/env python2.7
 from __future__ import print_function
+from __future__ import absolute_import
 import sys
 import time
 import optparse
@@ -8,6 +9,7 @@ import random
 import logging
 import subprocess
 import hashlib
+from six.moves import range
 
 parser = optparse.OptionParser()
 parser.add_option('--verbose',
@@ -150,7 +152,7 @@ for (stream, test) in test_streams:
         zephyr_subs_to_add.append((stream, '*', '*'))
 
 actually_subscribed = False
-for tries in xrange(10):
+for tries in range(10):
     try:
         zephyr.init()
         zephyr._z.subAll(zephyr_subs_to_add)

puppet/zulip_internal/files/zulip-ec2-configure-interfaces

@@ -42,6 +42,7 @@ interfaces.
 
 '''
 
+from __future__ import absolute_import
 import sys
 import logging
 import logging.handlers
@@ -50,6 +51,7 @@ import re
 
 import boto.utils
 import netifaces
+from six.moves import range
 
 def address_of(device_id):
     try:

tools/check-templates

@@ -5,6 +5,7 @@ import sys
 import subprocess
 from six.moves import filter
 from six.moves import map
+from six.moves import range
 
 class Record:
     pass