title: Error in importing tensorflow
body: <p>I followed instructions in <a href="https://www.tensorflow.org/versions/master/get_started/os_setup.html#virtualenv_install" rel="nofollow">https://www.tensorflow.org/versions/master/get_started/os_setup.html#virtualenv_install</a> Virtualenv but when I type this in python in Ubuntu terminal <code>import tensorflow as tf
  </code> I got this message:<code>
  File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named tensorflow</code>
  What did I wrong?</p>