August 2018
Intermediate to advanced
248 pages
5h 51m
English
Content preview from Mastering Python Design Patterns - Second Edition
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Implementing the abstract factory pattern
To demonstrate the abstract factory pattern, I will reuse one of my favorite examples, included in the book, Python 3 Patterns, Recipes and Idioms, by Bruce Eckel. Imagine that we are creating a game or we want to include a mini-game as part of our application to entertain our users. We want to include at least two games, one for children and one for adults. We will decide which game to create and launch at runtime, based on user input. An abstract factory takes care of the game creation part.
Let's start with the kid's game. It is called FrogWorld. The main hero is a frog who enjoys eating bugs. Every hero needs a good name, and in our case, the name is given by the user at runtime. The interact_with() ...
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