示例类
class Car():
def __init__(self, make, model, year):
self.make = make
self.model = model
self.year = year
self.odometer = 0
def get_descriptive(self):
long_name = str(self.year) + ' ' + self.make + ' ' + self.model
return long_name.title()
def read_odometer(self):
print(str(self.odometer))
1. 直接修改属性的值
my_new_car.odometer = 19
my_new_car.read_odometer()
2. 通过方法修改属性的值
#内部增加一个方法来修改属性
...
def update_odometer(self, mileage):
self.odometer = mileage
...
my_new_car.update_odometer(19)
my_new_car.read_odometer()
3.通过方法对属性的值进行递增
# 内部增加一个方法来递增属性值
...
def increment_odometer(self, miles):
self.odometer += miles
...
my_used_car = Car('subaru', 'outback', 2013)
my_used_car.update_odometer(23500)
my_used_car.read_odometer()
my_used_car.increment_odometer(100)
my_used_car.read_odometer()
