#!/usr/bin/env python# -*- coding: utf-8 -*-import timeclass SalesManager:def talk(self):print("Sales Manager ready to talk")class Proxy:def __init__(self):self.busy = 'No'self.sales = Nonedef talk(self):print("Proxy checking for Sales Manager availability")if self.busy == 'No':self.sales = SalesManager()time.sleep(0.1)self.sales.talk()else:time.sleep(0.1)print("Sales Manager is busy")class NoTalkProxy(Proxy):def talk(self):print("Proxy checking for Sales Manager availability")time.sleep(0.1)print("This Sales Manager will not talk to you whether he/she is busy or not")if __name__ == '__main__':p = Proxy()p.talk()p.busy = 'Yes'p.talk()p = NoTalkProxy()p.talk()p.busy = 'Yes'p.talk()### OUTPUT #### Proxy checking for Sales Manager availability# Sales Manager ready to talk# Proxy checking for Sales Manager availability# Sales Manager is busy# Proxy checking for Sales Manager availability# This Sales Manager will not talk to you whether he/she is busy or not# Proxy checking for Sales Manager availability# This Sales Manager will not talk to you whether he/she is busy or not
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