Migrate update-translations.py to python3

contrib/devtools/update-translations.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 # Copyright (c) 2014 Wladimir J. van der Laan
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -15,7 +15,6 @@
 TODO:
 - auto-add new translations to the build system according to the translation process
 '''
-from __future__ import division, print_function
 import subprocess
 import re
 import sys
@@ -36,12 +35,12 @@ def check_at_repository_root():
     if not os.path.exists('.git'):
         print('No .git directory found')
         print('Execute this script at the root of the repository', file=sys.stderr)
-        exit(1)
+        sys.exit(1)
 
 def fetch_all_translations():
     if subprocess.call([TX, 'pull', '-f', '-a']):
         print('Error while fetching translations', file=sys.stderr)
-        exit(1)
+        sys.exit(1)
 
 def find_format_specifiers(s):
     '''Find all format specifiers in a string.'''
@@ -208,3 +207,4 @@ def postprocess_translations(reduce_diff_hacks=False):
     check_at_repository_root()
     fetch_all_translations()
     postprocess_translations()
+