Facade Design Pattern in Python…

from abc import ABC, abstractmethod

class Shape(ABC):
    """
    Abstract base class for all shapes.
    """
    @abstractmethod
    def draw(self):
        pass

class Circle(Shape):
    """
    Concrete class for a Circle.
    """
    def draw(self):
        print("Special method to draw a circle")

class Rectangle(Shape):
    """
    Concrete class for a Rectangle.
    """
    def draw(self):
        print("Special method to draw a rectangle")

class Triangle(Shape):
    """
    Concrete class for a Triangle.
    """
    def draw(self):
        print("Special method to draw a triangle")

class FacadeToShape:
    """
    The Facade provides a simplified interface to the complex subsystem of shapes.
    """
    def __init__(self, circle, rectangle, triangle):
        self.circle = circle
        self.rectangle = rectangle
        self.triangle = triangle

    def draw_circle(self):
        """Draws a circle using the subsystem."""
        self.circle.draw()

    def draw_rectangle(self):
        """Draws a rectangle using the subsystem."""
        self.rectangle.draw()

    def draw_triangle(self):
        """Draws a triangle using the subsystem."""
        self.triangle.draw()

    def draw_shapes(self):
        """Draws all shapes in a predefined order."""
        self.draw_circle()
        self.draw_triangle()
        self.draw_rectangle()

if __name__ == '__main__':
    # The client code interacts with the Facade instead of the individual shapes.
    facade_to_shape = FacadeToShape(Circle(), Rectangle(), Triangle())
    facade_to_shape.draw_shapes()