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 some kind of master or owner object to implement an algorithm or decision. The Strategy object often depends 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 so we can avoid internal storage in the strategy instance. All values can be provided to a Strategy object as method argument values. In some cases, a strategy object can be stateless; in this instance, it is more a collection of method functions than anything else.
In the following examples, we'll show both stateless and stateful strategy class definitions. We'll start with the strategy for...
