old_contents: from importlib import import_module
  
  from django.conf import settings
  from django.core.wsgi import get_wsgi_application
  
  from tornado.httpserver import HTTPServer
  from tornado.ioloop import IOLoop
  from tornado.web import Application, FallbackHandler, StaticFileHandler
  from tornado.wsgi import WSGIContainer
  
  from base.handlers import DjangoStaticFilesHandler, HelloHandler, RobotsHandler
  
  
  def make_tornado_server():
      wsgi_app = WSGIContainer(get_wsgi_application())
      tornado_url_list = [
          (r'/static/(.*)', DjangoStaticFilesHandler, {'default_filename':
                                                       'none.img'}),
          (r'/media/(.*)', StaticFileHandler, {'path': settings.MEDIA_ROOT}),
          ('/hello-tornado', HelloHandler),
          ('/robots.txt', RobotsHandler),
      ]
  
      for app in settings.INSTALLED_APPS:
          app_name = app.rsplit('.', 1).pop()
          # add proxy views
          try:
              proxy_module = import_module('%s.proxy_views' % app)
          except ImportError:
              pass
          else:
              tornado_url_list += [
                  ('/proxy/%s/([^?]*)' % app_name, proxy_module.Proxy)
              ]
          # add ws views
          try:
              ws_module = import_module('%s.ws_views' % app)
          except ImportError:
              pass
          else:
              tornado_url_list += [
                  ('/ws/%s/([^?]*)' % app_name, ws_module.WebSocket)
              ]
      tornado_url_list += [
          ('.*', FallbackHandler, dict(fallback=wsgi_app))
      ]
      tornado_app = Application(tornado_url_list)
      server = HTTPServer(tornado_app)
      server.xheaders = True
      return server
  
  def run(port):
      make_tornado_server().listen(int(port))
      IOLoop.instance().start()
  
new_contents: from importlib import import_module
  
  from django.conf import settings
  from django.core.wsgi import get_wsgi_application
  
  from tornado.httpserver import HTTPServer
  from tornado.ioloop import IOLoop
  from tornado.web import Application, FallbackHandler, StaticFileHandler
  from tornado.wsgi import WSGIContainer
  
  from base.handlers import DjangoStaticFilesHandler, HelloHandler, RobotsHandler
  
  
  def make_tornado_server():
      wsgi_app = WSGIContainer(get_wsgi_application())
      tornado_url_list = [
          (r'/static/(.*)', DjangoStaticFilesHandler, {'default_filename':
                                                       'none.img'}),
          (r'/media/(.*)', StaticFileHandler, {'path': settings.MEDIA_ROOT}),
          ('/hello-tornado', HelloHandler),
          ('/robots.txt', RobotsHandler),
      ]
  
      for app in settings.INSTALLED_APPS:
          app_name = app.rsplit('.', 1).pop()
          # add proxy views
          try:
              proxy_module = import_module('%s.proxy_views' % app)
          except ImportError:
              pass
          else:
              tornado_url_list += [
                  ('/proxy/%s/([^?]*)' % app_name, proxy_module.Proxy)
              ]
          # add ws views
          try:
              ws_module = import_module('%s.ws_views' % app)
          except ImportError:
              pass
          else:
              tornado_url_list += [
                  ('/ws/%s/([^?]*)' % app_name, ws_module.WebSocket)
              ]
      tornado_url_list += [
          ('.*', FallbackHandler, dict(fallback=wsgi_app))
      ]
      tornado_app = Application(tornado_url_list)
      server = HTTPServer(tornado_app)
      server.xheaders = True
      return server
  
  
  def run(port):
      make_tornado_server().listen(int(port))
      IOLoop.instance().start()
  
subject: fix flake8