To use TensorFlow in Python, as we'll do in the Audio recognition and Reinforcement learning sections later, we can install the TensorFlow 1.6 nightly build for Pi at the TensorFlow Jenkins continuous integrate site (http://ci.tensorflow.org/view/Nightly/job/nightly-pi/223/artifact/output-artifacts):
sudo pip install http://ci.tensorflow.org/view/Nightly/job/nightly-pi/lastSuccessfulBuild/artifact/output-artifacts/tensorflow-1.6.0-cp27-none-any.whl
This method is more common and described in detail in a nice blog entry, Cross-compiling TensorFlow for the Raspberry Pi (https://petewarden.com/2017/08/20/cross-compiling-tensorflow-for-the-raspberry-pi), by Pete Warden.
A more complicated method is to use the makefile, required when you need to build and use the TensorFlow library. The Raspberry Pi section of the official TensorFlow makefile...