"""一个可用于表示汽车的类"""

class Car(object):

"""一次模拟汽车的简单尝试"""

def __init__(self, make, model, year):

"""初始化描述汽车的属性"""

self.make = make

self.model = model

self.year = year

self.odometer_reading = 0

def get_descriptive_name(self):

"""返回整洁的描述信息"""

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("This 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值

禁止将里程表读数回调

"""

if mileage >= self.odometer_reading:

self.odometer_reading = mileage

else:

print("You can't roll back an odometer!")

def increment_odometer(self, miles):

"""将里程表读数增加指定的量"""

self.odometer_reading += miles

# my_new_car = Car('adui', 'a4', 2016)

# print(my_new_car.get_descriptive_name())

# # my_new_car.odometer_reading = 23

# my_new_car.read_odometer()

# my_new_car.update_odometer(20)

# my_new_car.read_odometer()

# # my_new_car.update_odometer(20)

# # my_new_car.read_odometer()

# my_used_car = Car('subaru', 'outback', 2013)

# print(my_used_car.get_descriptive_name())

#

# my_used_car.update_odometer(23500)

# my_used_car.read_odometer()

#

# my_used_car.increment_odometer(100)

# my_used_car.read_odometer()