Noissue - Adapt best practices for trailing commas (sitescripts)

sitescripts/formmail/web/formmail2.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 127 matching lines @@
     @form_handler
     def handler(environ, start_response, params):
         response_headers = [('Content-Type', 'text/plain; charset=utf-8')]
         errors = validate_fields(fields, params)
         if errors:
             start_response('400 Bad Request', response_headers)
             return '\n'.join(errors)
         time = datetime.datetime.now()
         template_args = {
             'time': time,
-            'fields': {field: params.get(field, '') for field in fields}
+            'fields': {field: params.get(field, '') for field in fields},
         }
         try:
             sendMail(template, template_args)
         except:
             print(traceback.print_exc(), file=sys.stderr)
             start_response('500 Server Error', response_headers)
             return ''
         finally:
             if 'csv_log' in config:
                 params = {field: params.get(field, '').encode('utf8')
                           for field in fields}
                 params['time'] = time
                 log_formdata(params, config['csv_log'].value)
         start_response('200 OK', response_headers)
         return ''
 
     return url, handler
 
 
 conf_dict = conf_parse(get_config_items())
 for name, config in conf_dict.items():
     url, handler = make_handler(name, config)
     registerUrlHandler(url, handler)