类3

class Car():
    def __init__(self, make, model, year):
        self.make = make
        self.model = model
        self.year = year
        self.odometer_reading = 0
    
    def get_descriptive_name(self):
        long_name = str(self.year) + ' ' + self.make + ' ' + self.model
        return long_name.title()
        
    def read_odometer(self):
        print("This car has " + str(self.odometer_reading) + " miles on it.")
        
    def update_odometer(self, mileage):
        if mileage > self.odometer_reading:
            self.odometer_reading = mileage
        else:
            print("You can't roll back an odometer!")

    def increase_odometer(self, miles):
        self.odometer_reading += miles
    
    def fill_gas_tank(self):
        print("Filled gas tank.")
        
# class ElectricCar(Car):
    # def __init__(self, make, model, year):
        # super().__init__(make, model, year)
        # self.battery_size = 70
        
    # def describe_battery(self):
        # print("This car has a " + str(self.battery_size) + " -kWh battery.")
        
    # def fill_gas_tank(self):
        # print("This car doesn't need a gas tank.")

# my_tesla = ElectricCar("tesla", "model s", 2016)
# print(my_tesla.get_descriptive_name())
# my_tesla.describe_battery()
# my_tesla.fill_gas_tank()

class Battery():
    def __init__(self, battery_size=70):
        self.battery_size = battery_size
    
    def describe_battery(self):
        print("This car has a " + str(self.battery_size) + " -kWh battery.")
        
    def get_range(self):
        if self.battery_size == 70:
            range = 240
        elif self.battery_size == 85:nn
            range = 270
        
        message = "This car can go approximately " + str(range)
        message += " miles on a full charge."
        print(message)    
        
class ElectricCar(Car):
    def __init__(self, make, model, year):
        super().__init__(make, model, year)
        self.battery = Battery()
    
my_tesla = ElectricCar("tesla", "model s", 2016)
print(my_tesla.get_descriptive_name())

my_tesla.battery.describe_battery()
my_tesla.battery.get_range()

class Restaurant():
    def __init__(self, restaurant_name, cuisine_type):
        self.name = restaurant_name
        self.type = cuisine_type
    
    def describe_restaurant(self):
        print("name:"+self.name)
        print("type:"+self.type)
    
    def open_restaurant(self):
        print("status:open")

class IceCreamStand(Restaurant):
    def __init__(self, name, type):
        super().__init__(name, type)
        self.falvors = ["chocolate", "milk", "tea"]
    
    def show_falvors(self):
        print(self.falvors)

stand = IceCreamStand("Paris Barget", "IceCream")
stand.show_falvors()

class User():
    def __init__(self, first_name, last_name):
        self.firstname = first_name
        self.lastname = last_name
    
    def describe_user(self):
        print("first name:"+self.firstname)
        print("last name:"+self.lastname)
    
    def greet_user(self):
        print("hello, "+self.firstname.title()+" " + self.lastname.title())
        
# class Admin(User):
    # def __init__(self, first_name, last_name):
        # super().__init__(first_name, last_name)
        # self.privileges = ["can add post", "can delete post", "can ban user"]
        
    # def show_privileges(self):
        # print(self.privileges)

# admin = Admin("Piao", "Yongyou")
# admin.show_privileges()

class Privileges():
    def __init__(self):
        self.privileges = ["can add post", "can delete post", "can ban user"]
    
    def show_privileges(self):
        print(self.privileges)

class Admin(User):
    def __init__(self, first_name, last_name):
        super().__init__(first_name, last_name)
        self.privileges = Privileges()

print("====")
admin = Admin("Piao", "Yongyou")
admin.privileges.show_privileges()

print("====")

class Car():
    def __init__(self, make, model, year):
        self.make = make
        self.model = model
        self.year = year
        self.odometer_reading = 0
    
    def get_descriptive_name(self):
        long_name = str(self.year) + ' ' + self.make + ' ' + self.model
        return long_name.title()
        
    def read_odometer(self):
        print("This car has " + str(self.odometer_reading) + " miles on it.")
        
    def update_odometer(self, mileage):
        if mileage > self.odometer_reading:
            self.odometer_reading = mileage
        else:
            print("You can't roll back an odometer!")

    def increase_odometer(self, miles):
        self.odometer_reading += miles
    
    def fill_gas_tank(self):
        print("Filled gas tank.")

class Battery():
    def __init__(self, battery_size=70):
        self.battery_size = battery_size
    
    def describe_battery(self):
        print("This car has a " + str(self.battery_size) + " -kWh battery.")
        
    def get_range(self):
        if self.battery_size == 70:
            range = 240
        elif self.battery_size == 85:
            range = 270
        
        message = "This car can go approximately " + str(range)
        message += " miles on a full charge."
        print(message)
    
    def upgrade_battery(self):
        if self.battery_size != 85:
            self.battery_size = 85
        
class ElectricCar(Car):
    def __init__(self, make, model, year):
        super().__init__(make, model, year)
        self.battery = Battery()
        
my_tesla = ElectricCar("Tesla", "model s", 2016)
my_tesla.battery.get_range()
my_tesla.battery.upgrade_battery()
my_tesla.battery.get_range()