Python 3 How to Install TensorFlow

1)
Install pip3 and virtualenv.

$ sudo apt-get install python3-pip python3-dev python-virtualenv

2)
Create a virtualenv environment.

$ virtualenv -p python3 --system-site-packages myvenv

3)
Activate the virtualenv environment

$ source myvenv/bin/activate

4)
Install TensorFlow in the active virtualenv environment

$ pip3 install --upgrade tensorflow

5)
Test
$ python3
import tensorflow