class Car():
    """一次模拟汽车的简单尝试"""
    def __init__(self, make, model, year):
        self.make = make
        self.model = model
        self.year = year
        # 给属性指定默认值
        self.odometer_reading = 0

    def get_descriptive_name(self):
        """返回整洁的描述性信息"""
        long_name = str(self.year) + ' ' + self.make + ' ' + self.model
        return long_name.title()

    def read_odometer(self):
        """打印一条指出汽车里程的消息"""
        print('The Car has ' + str(self.odometer_reading) + ' miles on it.')

    def update_odometer(self, mileage):
        """将里程表读数设置为指定的值"""
        self.odometer_reading = mileage

    def increment_odometer(self, miles):
        self.odometer_reading += miles

# my_new_car = Car('audi', 'a4', 2016)
# print(my_new_car)
# print(my_new_car.get_descriptive_name())
# my_new_car.read_odometer()
# # 修改属性的值
# my_new_car.odometer_reading = 23
# my_new_car.read_odometer()
#
# # 通过方法修改属性的值
# my_new_car.update_odometer(30)
# my_new_car.read_odometer()
# # 通过方法对属性的值进行递增
# my_new_car.increment_odometer(10)
# my_new_car.read_odometer()