python3: use exec(open(... to replace execfile (#39092)

debian/debian_config.py

@@ -1,4 +1,4 @@
-# This file is sourced by "execfile" from welco.settings
+# This file is sourced by "exec(open(..." from welco.settings
 
 import os
 
@@ -10,12 +10,12 @@ INSTALLED_APPS += ('mellon',)
 #
 # hobotization (multitenant)
 #
-execfile('/usr/lib/hobo/debian_config_common.py')
+exec(open('/usr/lib/hobo/debian_config_common.py').read())
 
 #
 # local settings
 #
-execfile(os.path.join(ETC_DIR, 'settings.py'))
+exec(open(os.path.join(ETC_DIR, 'settings.py')).read())
 
 # run additional settings snippets
-execfile('/usr/lib/hobo/debian_config_settings_d.py')
+exec(open('/usr/lib/hobo/debian_config_settings_d.py').read())

debian/settings.py

@@ -9,7 +9,8 @@
 # WARNING! Quick-start development settings unsuitable for production!
 # See https://docs.djangoproject.com/en/1.7/howto/deployment/checklist/
 
-# This file is sourced by "execfile" from /usr/lib/welco/debian_config.py
+# This file is sourced by "exec(open(...).read())" from
+# /usr/lib/welco/debian_config.py
 
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = False

welco/settings.py

@@ -220,4 +220,4 @@ REST_FRAMEWORK['DEFAULT_AUTHENTICATION_CLASSES'] = ['rest_framework.authenticati
 local_settings_file = os.environ.get('WELCO_SETTINGS_FILE',
         os.path.join(os.path.dirname(__file__), 'local_settings.py'))
 if os.path.exists(local_settings_file):
-    execfile(local_settings_file)
+    exec(open(local_settings_file).read())