title: ImportError: No module named 'tensorflow.core'
body: <p>After installing tensorflow-gpu using pip3, I am getting the following error when trying to <code>import tensorflow as tf</code></p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "/home/dlpda/.local/lib/python3.5/site-packages/tensorflow/__init__.py", line 22, in &lt;module&gt;
      from tensorflow.python import pywrap_tensorflow  # pylint: disable=unused-import
    File "/home/dlpda/.local/lib/python3.5/site-packages/tensorflow/python/__init__.py", line 52, in &lt;module&gt;
      from tensorflow.core.framework.graph_pb2 import *
  ImportError: No module named 'tensorflow.core'
  </code></pre>
  
  <p>Although I am able to import successfully in a virtualenv, but not outside.</p>
  
  <p>How should I resolve this problem to be able to import tensorflow?</p>