How can I get the Rectangle class to inherit from the GeometricShape

I have created 3 classes, the GeometricShape class, the Rectangle class, and the Ellipse class. The attributes of these classes have been modified to be private. I want to focus on having the rectangle class inherit from the GeometricShape class. I assume my work here will reflect on the Ellipse later.

The project advises me not to define the methods from GeometricShape into Rectangle.

I put GeometricShape in the parenthesis of the Rectangle class.I put a call base class constructor in the class as well. I am getting this message, NameError: name 'name' is not defined.When leaving out the call base class constructor, I get this message, AttributeError: 'Rectangle' object has no attribute '_GeometricShape__name'

class GeometricShape:    def __init__(self, name):        #self.name = name #code before modification        self.set_name(name)    def get_name(self):        return self.__name    def set_name(self, name):        self.__name = nameclass Rectangle(GeometricShape):    def __init__(self, length, width):        GeometricShape.__init__(self,name) #trying to get inherited attributes        #self.length = length #code before modification        #self.width = width #code before modification        self.set_length(length)        self.set_width(width)    def get_length(self):        return self.__length    def get_width(self):        return self.__width    def set_length(self, length):        self.__length = length    def set_width(self, width):        self.__width = width    def get_perimeter(self):        #return (2 * self.length) + (2 * self.width) #code before modification        return (2 * self.__length) + (2 * self.__width)    def get_area(self):        #return self.length * self.width #code before modification        return self.__length * self.__width

I am trying to work this out incrementally. This is the expected behavior (given by the project) I am trying to follow:

>>> Rectangle.__bases__(<class '__main__.GeometricShape'>,)>>> rectangle = Rectangle(10, 20)>>> rectangle.get_name()'Rectangle'>>> rectangle._GeometricShape__name'Rectangle'>>> rectangle.set_name('Square')>>> rectangle.get_name()'Square'>>> rectangle._GeometricShape__name'Square'

I am verifying this line by line. I got stuck where it says:

>>> rectangle = Rectangle(10, 20)>>> rectangle.get_name()

The first of these lines gives me the NameError, when I have the class base constructor in the code The second gives me the AttributeError when I leave out the class base constructor.