设计模式 责任链模式

class Leader:
    def __init__(self):
        pass
    def setSuperior(self, Obj):
        self.superior = Obj
    def approval(self, day):
        pass

class GroupLeader(Leader):
    def approval(self, day):
        if day >= 1 and day < 3:
            print('group leader 审批通过')
        else:
            self.superior.approval(day)

class Manager(Leader):
    def approval(self, day):
        if day >=3 and day < 5:
            print('manager 审批通过')
        else:
            self.superior.approval(day)

class  Majordomo(Leader):
    def approval(self, day):
        if day >= 5:
            print('majordomo 审批通过')

if __name__ == '__main__':
    groupLeader = GroupLeader()
    manager = Manager()
    majordomo = Majordomo()
    groupLeader.setSuperior(manager)
    manager.setSuperior(majordomo)
    groupLeader.approval(9)