Implementing Facade pattern using Python

Facade pattern is a structural design pattern, which is used to encapsulate various components of a complex system to simplify its use. In Python, you can use classes and methods to implement Facade pattern. The following is an example code of using Python to implement Facade pattern: python #Appearance class class Facade: def __init__(self): self.subsystem1 = Subsystem1() self.subsystem2 = Subsystem2() self.subsystem3 = Subsystem3() #Appearance method, encapsulating calls to subsystems def operation(self): self.subsystem1.operation1() self.subsystem2.operation2() self.subsystem3.operation3() #Subsystem 1 class Subsystem1: def operation1(self): print("Subsystem1 operation") #Subsystem 2 class Subsystem2: def operation2(self): print("Subsystem2 operation") #Subsystem 3 class Subsystem3: def operation3(self): print("Subsystem3 operation") #Client code def main(): facade = Facade() facade.operation() if __name__ == '__main__': main() In the above code, the Facade class acts as a facade class, encapsulating calls to subsystems. Each subsystem has its own operating methods, and the Facade class encapsulates these operating methods in a facade method. The client code only needs to call the skin method through the skin class, without directly interacting with the subsystem. When we run the above code, the following results will be output: Subsystem1 operation Subsystem2 operation Subsystem3 operation This indicates that the appearance class successfully encapsulated calls to the subsystem, simplifying the client code.