63 lines
2.0 KiB
Python
63 lines
2.0 KiB
Python
"""
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实例：
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汤宝宝申请报销款，需要走产品经理、部门经理和总经理的审核~
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"""
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class Manager:
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def __init__(self, name):
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self.name = name
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self.successor = None
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self.amount = 0
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def set_successor(self, manager: 'Manager'):
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self.successor = manager
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print(f"{self.name}的下一级经理是{manager.name}")
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def set_amount_right(self, amount: float):
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self.amount = amount
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print(f"{self.name}的报销权限是{amount:.2f}元")
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def have_right(self, amount: float) -> bool:
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right = amount <= self.amount
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if right:
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print(f"{self.name}有权限审批{amount:.2f}元的报销请求")
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else:
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print(f"{self.name}没有权限审批{amount:.2f}元的报销请求")
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return right
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def approve(self, name:str, amount: float):
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print(f"{name}提交了一笔{amount:.2f}元的报销请求")
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if self.have_right(amount):
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print(f"{self.name}审批通过了{name}的报销请求，金额为{amount:.2f}元")
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elif self.successor:
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print(f"{self.name}将{name}的报销请求上报给{self.successor.name}审批")
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self.successor.approve(name, amount)
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else:
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print(f"没有合适的经理审批{name}的报销请求，金额为{amount:.2f}元")
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if __name__ == "__main__":
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print("========= 责任链模式 =========")
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# 创建经理
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pm = Manager("产品经理")
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pm.set_amount_right(1000)
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dm = Manager("部门经理")
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dm.set_amount_right(5000)
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gm = Manager("总经理")
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gm.set_amount_right(20000)
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# 设置责任链
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pm.set_successor(dm)
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dm.set_successor(gm)
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# 提交报销请求
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print("-----")
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pm.approve("汤宝宝", 800)
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print("-----")
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pm.approve("汤宝宝", 3000)
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print("-----")
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pm.approve("汤宝宝", 15000)
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print("-----")
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pm.approve("汤宝宝", 25000)
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print("\n======= 责任链模式结束 =======") |