利用继承和多态知识点为汽车租赁中心开发一个汽车租赁系统，对租赁中心 的汽车进行管理，主要如下： （1）基本功能：首先，输入租赁的天数，用于最后计算租赁的费用；其次， 选择租赁的汽车类型、其次品牌、汽车型号和客车座位数；最后，系统给出分配 的车辆信息和需要支付的租赁费用，以及计算出汽车租赁的总租金，运行效果如 图3； （2）汽车租赁公司出租多种车辆，以参考

好的，下面是一个简单的实现：

首先，我们定义一个名为`Vehicle`的基类，包含车辆的基本属性，如车牌号、品牌、型号、租金等。然后，我们创建三个派生类，分别是`Car`、`Bus`和`Truck`，继承自`Vehicle`类，并在每个派生类中添加车辆特有的属性，如客车座位数、载重量等。

class Vehicle:
    def __init__(self, plate_num, brand, model, rental):
        self.plate_num = plate_num
        self.brand = brand
        self.model = model
        self.rental = rental
    
    def show_info(self):
        print("Plate Num:", self.plate_num)
        print("Brand:", self.brand)
        print("Model:", self.model)
        print("Rental:", self.rental)

class Car(Vehicle):
    def __init__(self, plate_num, brand, model, rental, seats):
        super().__init__(plate_num, brand, model, rental)
        self.seats = seats
    
    def show_info(self):
        super().show_info()
        print("Seats:", self.seats)

class Bus(Vehicle):
    def __init__(self, plate_num, brand, model, rental, seats):
        super().__init__(plate_num, brand, model, rental)
        self.seats = seats
    
    def show_info(self):
        super().show_info()
        print("Seats:", self.seats)

class Truck(Vehicle):
    def __init__(self, plate_num, brand, model, rental, load):
        super().__init__(plate_num, brand, model, rental)
        self.load = load
    
    def show_info(self):
        super().show_info()
        print("Load:", self.load)

然后，我们创建一个名为`Rental`的类，用于计算租赁费用和车辆分配情况。该类包含租赁天数、所选车辆类型和所选车辆品牌等属性，以及计算租赁费用和分配车辆的方法。

class Rental:
    def __init__(self, days, vehicle_type, brand, model, seats=None, load=None):
        self.days = days
        self.vehicle_type = vehicle_type
        self.brand = brand
        self.model = model
        self.seats = seats
        self.load = load
        self.total_price = 0
        
    def calculate_price(self, rental):
        self.total_price = self.days * rental
    
    def rent_vehicle(self, vehicles):
        for vehicle in vehicles:
            if isinstance(vehicle, Car) and self.vehicle_type == "Car" and vehicle.brand == self.brand and vehicle.model == self.model and vehicle.seats == self.seats:
                vehicle.show_info()
                self.calculate_price(vehicle.rental)
                print("Price:", self.total_price)
                return
            elif isinstance(vehicle, Bus) and self.vehicle_type == "Bus" and vehicle.brand == self.brand and vehicle.model == self.model and vehicle.seats == self.seats:
                vehicle.show_info()
                self.calculate_price(vehicle.rental)
                print("Price:", self.total_price)
                return
            elif isinstance(vehicle, Truck) and self.vehicle_type == "Truck" and vehicle.brand == self.brand and vehicle.model == self.model and vehicle.load == self.load:
                vehicle.show_info()
                self.calculate_price(vehicle.rental)
                print("Price:", self.total_price)
                return
        print("Sorry, no available vehicles.")

最后，在主函数中，我们首先输入租赁天数和所选车辆类型、品牌等信息，然后创建一个`Rental`对象，并调用其方法计算租赁费用和分配车辆。

def main():
    car1 = Car("A12345", "Toyota", "Camry", 50, 5)
    car2 = Car("B23456", "Honda", "Accord", 60, 5)
    bus1 = Bus("C34567", "Yutong", "ZK6100", 100, 50)
    truck1 = Truck("D45678", "Foton", "Auman", 150, 5)
    vehicles = [car1, car2, bus1, truck1]
    
    days = int(input("Enter days: "))
    vehicle_type = input("Enter vehicle type (Car/Bus/Truck): ")
    brand = input("Enter brand: ")
    model = input("Enter model: ")
    if vehicle_type == "Car" or vehicle_type == "Bus":
        seats = int(input("Enter seats: "))
        rental = Rental(days, vehicle_type, brand, model, seats=seats)
    else:
        load = int(input("Enter load: "))
        rental = Rental(days, vehicle_type, brand, model, load=load)
    
    rental.rent_vehicle(vehicles)

这个简单的汽车租赁系统实现了基本功能，可以根据具体需求进行修改和扩展。