code: def make_runserver(app_factory, hostname='localhost', port=5000,
                     use_reloader=False, use_debugger=False, use_evalex=True,
                     threaded=False, processes=1, static_files=None,
                     extra_files=None, ssl_context=None):
      
      def action(hostname=('h', hostname), port=('p', port),
                 reloader=use_reloader, debugger=use_debugger,
                 evalex=use_evalex, threaded=threaded, processes=processes):
          """Start a new development server."""
          from werkzeug.serving import run_simple
          app = app_factory()
          run_simple(hostname, port, app, reloader, debugger, evalex,
                     extra_files, 1, threaded, processes,
                     static_files=static_files, ssl_context=ssl_context)
      return action
docs: Returns an action callback that spawns a new development server.
  
      .. versionadded:: 0.5
         `static_files` and `extra_files` was added.
  
      ..versionadded:: 0.6.1
         `ssl_context` was added.
  
      :param app_factory: a function that returns a new WSGI application.
      :param hostname: the default hostname the server should listen on.
      :param port: the default port of the server.
      :param use_reloader: the default setting for the reloader.
      :param use_evalex: the default setting for the evalex flag of the debugger.
      :param threaded: the default threading setting.
      :param processes: the default number of processes to start.
      :param static_files: optional dict of static files.
      :param extra_files: optional list of extra files to track for reloading.
      :param ssl_context: optional SSL context for running server in HTTPS mode.