For the four teams working on Tic-Tac-Toe, here are three files you may want to look at or use.

gameManager.py is a Game Manager for Tic-Tac-Toe.

players.py is a collection of classes for Tic-Tac-Toe players.

transform.py has functions to transform a board into a representative board of its equivalence class and back.

WARNING: These are newly written (and written rather quickly) and may have bugs.

The work remaining is to complete the LearningPlayer and then to experiment with self-play.

(You may ignore these files and continue with your own development. Using these files is not required.)

Another update. Now there are only two files. (The contents of transform.py have been moved into players.py.) This is a zipped version. (Most recently updated at the "last edited" date of this message, below.)