code: def App(routes, error_handler=None):
      def app(env, start_resp):
          try:
              return dispatch(routes, env, start_resp)
          except Exception as e:
              if error_handler:
                  return error_handler(e)(env, start_resp)
              raise
  
      return app
  
imports: import io
  import json
  import logging
  import socket
  from werkzeug import routing
  from werkzeug import serving
  from werkzeug import exceptions
  from werkzeug.middleware.shared_data import SharedDataMiddleware
  from werkzeug.wrappers import Request, Response
label_desc: Use image node_id 7 for calling a global function with example usage: App(routes, error_handler) and returns: app, dispatch, error_handler