这篇文章主要介绍了pycharm实现在子类中添加一个父类没有的属性,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧
我就废话不多说了,还是直接看代码吧!
class Car():
"""一次模拟汽车的简单尝试"""
def __init__(self, make, model, year):
"""初始化描述汽车的属性"""
self.make = make
self.model = model
self.year = year
self.odometer_reading = 0
def get_description_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 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):
"""
将里程读数设置为指定的值
禁止将里程表读数往回调
"""
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
class ElectricCar(Car):
"""电动汽车的独特之处"""
def _init_(self, make, model, year):
"""