python - CherryPy: Turn off tool for one handler -

i have class several routes , i'd them use json tools except one. how can exclude specific route tool (foo in example below)?

import cherrypy  class helloworld(object):     _cp_config = {         'tools.json_out.on': true,         'tools.json_in.on': true,         '/foo': {            'tools.json_out.on': true,            'tools.json_in.on': true         }     }     @cherrypy.expose()     def index(self):         return "hello world!"     @cherrypy.expose()     def foo(self):         return "hello world!"  cherrypy.quickstart(helloworld()) 

you can cherrypy.config decorator:

import cherrypy  class helloworld(object):     _cp_config = {         'tools.json_out.on': true,         'tools.json_in.on': true     }      @cherrypy.expose     def index(self):         return "hello world!"      @cherrypy.expose     @cherrypy.config(**{'tools.json_in.on': false, 'tools.json_out.on': false})     def foo(self):         return "hello world!"  cherrypy.quickstart(helloworld())