old_contents: # coding: utf-8
  
  
  import tornado.ioloop
  
  from forecast.manager import BaseCommand, Argument
  
  
  class RunserverCommand(BaseCommand):
      help_text = "Start a server"
      parameters = (
          Argument("--port", "-p", action="store", default=8000, type=int),
      )
  
      def run(self, project, args, unknown_args):
          print "Development server is running at http://127.0.0.1:%s/" % (args.port,)
          print "Quit the server with CONTROL-C."
  
          tornado_application = project.get_tornado_application()
          tornado_application.listen(args.port)
          try:
              tornado.ioloop.IOLoop.instance().start()
          except KeyboardInterrupt:
              print "\nInterrupted!"
  
new_contents: # coding: utf-8
  
  
  import tornado.ioloop
  
  from forecast.manager import BaseCommand, Argument
  
  
  class RunserverCommand(BaseCommand):
      help_text = "Start a server"
      parameters = (
          Argument("--port", "-p", action="store", default=8888, type=int),
      )
  
      def run(self, project, args, unknown_args):
          print "Development server is running at http://127.0.0.1:%s/" % (args.port,)
          print "Quit the server with CONTROL-C."
  
          tornado_application = project.get_tornado_application()
          tornado_application.listen(args.port)
          try:
              tornado.ioloop.IOLoop.instance().start()
          except KeyboardInterrupt:
              print "\nInterrupted!"
  
subject: Change default server port from 8000 to 8888 (as suggested in tornado's documentation)