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
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
class Battery():
"""一次模拟电动汽车电瓶的简单尝试"""
def __init__(self, battery_size = 70):
"""初始化电瓶属性"""
self.battery_size = battery_size
def describe_battery(self):
"""打印一条描述电瓶容量的消息"""
print ("This car has a " + str(self.battery_size) + "-KWh battery.")
def get_range(self):
"""打印一条消息，指出电瓶的续航里程"""
if self.battery_size == 70:
range = 240
elif self.battery_size == 85:
range = 270
message = "This Car can go approximately " + str(range)
message += " miles on a full charge."
print (message)
class ElectricCar(Car):
"""电瓶汽车的独特之处"""
def __init__(self, make, model, year):
"""
初始化父类的属性，再初始化电动汽车特有的属性
:param make:
:param model:
:param year:
"""
super().__init__(make, model, year)
self.battery = Battery()
my_tesla = ElectricCar(‘tesla‘, ‘model s‘, 2016)
print (my_tesla.get_descriptive_name())
my_tesla.battery.describe_battery()
my_tesla.battery.get_range()执行出来的结果是：
2016 Tesla Model S
This car has a 70-KWh battery.
This Car can go approximately 240 miles on a full charge.
如果我想把里面elif的数据显示出来要怎么写吗？
原文地址：http://13136244.blog.51cto.com/13126244/1971463
