Noissue - Adapt best practices for trailing commas (sitescripts)

sitescripts/submit_email/web/submit_email.py

 # This file is part of the Adblock Plus web scripts,
 # Copyright (C) 2006-present eyeo GmbH
 #
 # Adblock Plus is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3 as
 # published by the Free Software Foundation.
 #
 # Adblock Plus is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@@ skipping 31 matching lines @@
         template = config.get('submit_email', product + '_verification_email_template')
     except (KeyError, ConfigParser.NoOptionError):
         return send_simple_response(start_response, 400, 'Unknown product')
 
     email = data.get('email', '').strip()
     try:
         email = encode_email_address(email)
     except ValueError:
         return send_simple_response(
             start_response, 400,
-            'Please enter a valid email address.'
+            'Please enter a valid email address.',
         )
 
     params = [('email', email), ('signature', sign(config, email)), ('product', product)]
     lang = data.get('lang')
     if lang:
         params.append(('lang', lang))
 
     sendMail(
         template,
         {
             'recipient': email,
             'verification_url': '%s?%s' % (
                 urljoin(wsgiref.util.application_uri(environ), VERIFICATION_PATH),
-                urlencode(params)
-            )
-        }
+                urlencode(params),
+            ),
+        },
     )
 
     return send_simple_response(
         start_response, 200,
         'A confirmation email has been sent. Please check '
-        'your email and click the confirmation link.'
+        'your email and click the confirmation link.',
     )
 
 
 @url_handler(VERIFICATION_PATH)
 def verify_email(environ, start_response):
     config = get_config()
     params = dict(parse_qsl(environ.get('QUERY_STRING', '')))
 
     try:
         filename = config.get('submit_email', params['product'] + '_filename')
     except (KeyError, ConfigParser.NoOptionError):
         return send_simple_response(start_response, 400, 'Unknown product')
 
     email = params.get('email', '')
     signature = params.get('signature', '')
     if sign(config, email) != signature:
         return send_simple_response(
             start_response, 403,
-            'Invalid signature in verification request.'
+            'Invalid signature in verification request.',
         )
 
     with open(filename, 'ab', 0) as file:
         fcntl.lockf(file, fcntl.LOCK_EX)
         try:
             print >>file, email
         finally:
             fcntl.lockf(file, fcntl.LOCK_UN)
 
     location = config.get('submit_email', 'successful_verification_redirect_location')
     location = location.format(lang=quote(params.get('lang') or 'en', ''))
     start_response('303 See Other', [('Location', location)])
     return []