auth_test.py

from twisted.web.server import Site
from twisted.web.resource import Resource, IResource
from twisted.internet import reactor, task

class Customer(Resource):
    def __init__(self, customer_id=100):
        Resource.__init__(self, customer_id)
        self.customer_id = customer_id

    def render_GET(self, request):
        return 'hello %s' % str(self.customer_id)

class Customers(Resource):
    def getChild(self, path, request):
        return Customer(path)


class Root(Resource):
    def __init__(self):
        Resource.__init__(self)

    def getChildWithDefault(self, path, request):
        authenticated = False
        if authenticated:
            Resource.getChildWithDefault(self, path, request)
        else:
            empty_resource = IResource(self)
            request.setResponseCode(401)
            print dir(request)
            request.write('error<br> ')
            if not request.finished:
                pass
                #request.finish()
            return empty_resource

    def render_GET(self, request):
        return 'get'


def main():
    root = Root()
    root.putChild('customer', Customers())

    factory = Site(root)
    reactor.listenTCP(80, factory)

    reactor.run()

if __name__ == '__main__':
    main()

output

http://localhost/
error
get

http://localhost/foo
error
get

http://localhost/customer/100
error
error
get

http://localhost/foo/foo/foo/foo
error
error
error
error
get