What's the best way to implement a decision tree in Python?

Question

How to do it? What design patterns? Ideally would be sample code in the answer.

Answer 1

Here's one implementation :)

http://stackoverflow.com/questions/1436664

Answer 2

you can refer to the following posts:

http://onlamp.com/pub/a/python/2006/02/09/ai_decision_trees.html?page=1

http://mrevelle.blogspot.com/2005/11/decision-tree-building-and-graphing-in.html