General

Facade pattern hides the complexities of the system and provides an interface to the client using which the client can access the system. This type of design pattern comes under…

import abcclass Shape(abc.ABC): @abc.abstractmethod def draw(self): passclass Triangle(Shape): def draw(self): print("Triangle")class Circle(Shape): def draw(self): print("Circle")# Decorator was not needed to be inherited from Shape in Python.But you can enforce the…

# Allowing an object to alter behavior# when its internal state changes so that it appears to change its classclass Phone: def __init__(self): self.ring_state = SoundState() def volumeUp(self): self.ring_state =…