You'll find the source code included or referenced in the book in this archive. The code is organized by chapter. If the chapter is not listed, there was no code to go with it.
All the code is Python 3.X and requires the libraries installed in Chapter 1 of the book.
Please send questions, comments, or bugs to:
Updates:
page 84: the URL for the Iris dataset has changed:
https://archive.ics.uci.edu/ml/machine-learning-databases/iris/
Tensorflow issues addressable with:
pip3 install tensorflow-cpu (TF 2.8)
then update repo code to move 'keras' imports to 'tensorflow.keras'