在Python汽车计划中的继承

问题描述：

我正在通过制作汽车程序来处理Python中的继承，但遇到了构建问题。下面是我的代码：在Python汽车计划中的继承

class Car(): 
    """A simple attempt to represent a car""" 
    def __init__(self, make, model, year): 
     """Initialize attributes to describe a car.""" 
     self.make = make 
     self.model = model 
     self.year = year 
     #setting a default value for an attribute# 
     self.odometer_reading = 0 

    def get_descriptive_name(self): 
     """Return a neatly formatted descriptive name.""" 
     long_name = str(self.year) + ' ' + self.make + ' ' + self.model 
     return long_name.title() 

    def read_odometer(self): 
     """Print a statement showing the car's mileage.""" 
     print("This car has " +str(self.odometer_reading) + " miles on it.") 

    def update_odometer(self, mileage): 
     """Modifying the value through the following method 
      Reject the change if it attempts to roll the odometer back 
     """ 
     if mileage >= self.odometer_reading: 
      self.odometer_reading = mileage 
     else: 
      print("You can't roll back an odometer!") 

    def increment_odometer(self, miles): 
     """Incremeting an attributes value through methods""" 
     self.odometer_reading += miles 

class ElectricCar(Car): 
    """Represent aspects of a car, specific to electric vehicles.""" 
    def __init__(self, make, model, year): 
     """Initialize attributes of the parent class.""" 
     super().__init__(make, model, year) 

my_tesla = ElectricCar('tesla', 'model s', 2016) 
print(my_tesla.get_descriptive_name())

但是，我越来越想运行的程序时，此错误消息：

Traceback (most recent call last): 
    File "electric_car.py", line 39, in <module> 
    my_tesla = ElectricCar('tesla', 'model s', 2016) 
    File "electric_car.py", line 37, in __init__ 
    super().__init__(make, model, year) 
TypeError: super() takes at least 1 argument (0 given)

任何想法？

错误似乎很清楚：*“TypeError：super（）至少需要1个参数（给出0）”*您可能正在使用Python 2.x. –

啊，就是这样，似乎我需要升级到Python 3.谢谢！ –

另外，你可能想从'object'扩展'Car' –

答

在Python 2.7版，当我改变你的

super().__init__(make, model, year)

到

Car.__init__(self, make, model, year)

一切似乎工作。输出是：

2016 Tesla Model S

在Python汽车计划中的继承

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