#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""http://www.testingperspective.com/wiki/doku.php/collaboration/chetan/designpatternsinpython/chain-of-responsibilitypattern"""


class Handler:
    def successor(self, successor):
        self.successor = successor


class ConcreteHandler1(Handler):
    def handle(self, request):
        if 0 < request