Ndtyjky

I can not retrieve the value of a variable created only by the inherited child class.
Also, changing the value of a variable inherited from the parent class in the init of the child class does not apply.

Here's the parent class:

class Car():



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

        self.make = make

        self.model = model

        self.year = year

        self.odometer_reading = 0



    def __str__(self):

        return str(self.__class__) + ": " + str(self.__dict__)



    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

And here's the child class:

class ElectricCar(Car):



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

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

        self.odometer_reading = 100

        self.battery_size = 70



    def __str__(self):

        return str(self.__class__) + ": " + str(self.__dict__)



    def describe_battery(self):

        print(self.battery_size)

Now, if I try to run this code:

my_tesla = ElectricCar('tesla', 'model s', 2016)

print(my_tesla)

print(my_tesla.describe_battery())

I get the following exception:

<class '__main__.ElectricCar'>:

{'make': 'tesla', 'model': 'model s', 'year': 2016, 'odometer_reading': 0}



AttributeError: 'ElectricCar' object has no attribute 'battery_size'

I have an oddmeter_reading variable whose value is 0 in the parent class.
I changed from child class to 100, but it did not apply.
Also, the variable battery_size, which is set only in the child class, is not created in init.

What's the problem? What am I missing?