AttributeError：“ElectricCar”对象没有特性“”battery_size“”

Question

我正在学习"Python速成教程手册“这本书。我已经完全按照书中的方式编写了代码，但仍然出错。你能告诉我下面的代码有什么问题吗：

我得到了'AttributeError：'ElectricCar‘对象没有’battery_size‘属性。

班车：

def __init__(self, make, model, year):
    self.make=make
    self.model=model
    self.year=year
    self.odometer_reading = 0

def get_discriptive_name(self):
    long_name= f"{self.year}  {self.make}  {self.model}"
    return long_name.title()

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

def update_odometer(self, mileage):
    """ 
    Set the Odometer reading to the given value.
    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):
    """Add the given amount to the odometer reading."""
    self.odometer_reading += miles

"""Inheritance from parent/superclass to child/subclass."""

class ElectricCar(汽车)：“表示汽车的各个方面，特定于电动汽车。”

def __intit__(self,make,model,year):

    super().__init__(make,model,year)
    
    self.battery_size = 75

def describe_battery(self):

    """Print a statement describing the battery size."""

    print(f"This car has a {self.battery_size}-kWh battery.")

my_tesla =ElectricCar(‘特斯拉’，‘型号s'，2009)

print(my_tesla.get_discriptive_name())

my_tesla.describe_battery()

Answer 1

class ElectricCar(Car):
   def __intit__(self,make,model,year):
      super().__init__(make,model,year)
      self.battery_size = 75

   def describe_battery(self):

       """Print a statement describing the battery size."""

       print(f"This car has a {self.battery_size}-kWh battery.")

如果您查看一下，就会发现init函数拼写错误