#直接修改属性的值
# -*- coding:utf-8 -*-
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.")
myNewCar = Car('audi','a4',2016)
print(myNewCar.get_descriptive_name())
myNewCar.odometer_reading = 23
myNewCar.read_odometer()
#通过方法修改属性的值
# -*- coding:utf-8 -*-
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):
self.odometer_reading = mileage
myNewCar = Car('audi','a4',2016)
print(myNewCar.get_descriptive_name())
myNewCar.update_odometer(24)
myNewCar.read_odometer()
#通过方法对属性的值进行递增
# -*- coding:utf-8 -*-
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 increment_odometer(self,miles):
self.odometer_reading += miles
myNewCar = Car('audi','a4',2016)
print(myNewCar.get_descriptive_name())
myNewCar.update_odometer(23500)
myNewCar.read_odometer()
myNewCar.increment_odometer(8)
myNewCar.read_odometer()