Learning Python Design Patterns - Second Edition

Understanding the Façade design pattern

The façade is generally referred to as the face of the building, especially an attractive one. It can be also referred to as a behavior or appearance that gives a false idea of someone's true feelings or situation. When people walk past a façade, they can appreciate the exterior face but aren't aware of the complexities of the structure within. This is how a façade pattern is used. Façade hides the complexities of the internal system and provides an interface to the client that can access the system in a very simplified way.

Consider the example of a storekeeper. Now, when you, as a customer, visit a store to buy certain items, you're not aware of the layout of the store. You typically approach the storekeeper, ...