Mastering Object-oriented Python

Stateless objects without __init__()

The following is an example of a degenerate class that doesn't need an __init__() method. It's a common design pattern for Strategy objects. A Strategy object is plugged into a Master object to implement an algorithm or decision. It may rely on data in the master object; the Strategy object may not have any data of its own. We often design strategy classes to follow the Flyweight design pattern: we avoid internal storage in the Strategy object. All values are provided to Strategy as method argument values. The Strategy object itself can be stateless. It's more a collection of method functions than anything else.

In this case, we're providing the game play decisions for a Player instance. The following is an ...