class Car():
"""一次模拟汽车的简单尝试"""
def __init__(self, make, model, year):
"""初始化描述汽车属性"""
self.make = make
self.model = model
self.year = year
self.odometer_reading = 0
def get_descriptive_name(self):
"""返回整洁的描述性信息"""
long_name = str(self.year) + ' ' + self.make + ' ' + self.model
return long_name.title()
def update_odometer(self, mileage):
"""
将里程表读数设置为指定的值
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
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.")
my_new_car = Car('subaru', 'outback', 2013)
print(my_new_car.get_descriptive_name())
my_new_car.update_odometer(23500)
my_new_car.read_odometer()
my_new_car.increment_odometer(100)
my_new_car.read_odometer()
2013 Subaru Outback
This car has 23500 miles on it.
This car has 23600 miles on it.
