$ brew update
$ brew upgrade
$ pyenv install 3.5.1

$ pyenv virtualenv 3.5.1 learntf

$ touch .env
$ vi .env

# /.env
echo "====================="
echo "TensorFlow Playground"
echo " Activate virtualenv "
echo "====================="

pyenv activate learntf

$ cd ./.

# Mac OS X, CPU only, Python 3.4 or 3.5:
(learntf)$ export TF_BINARY_URL=https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.12.1-py3-none-any.whl

$ pip instsall --upgrade pip

(learntf)$ pip install --upgrade $TF_BINARY_URL

$ python
...
>>> import tensorflow as tf
>>> hello = tf.constant('Hello, TensorFlow!')
>>> sess = tf.Session()
>>> print(sess.run(hello))
Hello, TensorFlow!
>>> a = tf.constant(10)
>>> b = tf.constant(32)
>>> print(sess.run(a + b))
42
>>>

# install
$ pip install jupyter
# Launch
$ jupyter notebook