title: Error when importing TensorFlow in Python on Windows
body: <p>I am running Python 2.7.10 and I successfully installed TensorFlow, using <code>pip install 
  https://storage.googleapis.com/tensorflow/mac/tensorflow-0.5.0-py2-none-any.whl</code>.</p>
  
  <p>When I run the <code>python</code> interpreter and attempt to import the <code>tensorflow</code> module, I get the following error:</p>
  
  <pre><code>&gt;&gt;&gt; import tensorflow as tf
  Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "C:\Users\Or\AppData\Local\Enthought\Canopy\User\lib\site-packages\tensorflow\__init__.py", line 4, in &lt;module&gt;
      from tensorflow.python import *
    File "C:\Users\Or\AppData\Local\Enthought\Canopy\User\lib\site-packages\tensorflow\python\__init__.py", line 22, in &lt;module&gt;
      from tensorflow.python.client.client_lib import *
    File "C:\Users\Or\AppData\Local\Enthought\Canopy\User\lib\site-packages\tensorflow\python\client\client_lib.py", line 35, in &lt;module&gt;
      from tensorflow.python.client.session import InteractiveSession
    File "C:\Users\Or\AppData\Local\Enthought\Canopy\User\lib\site-packages\tensorflow\python\client\session.py", line 11, in &lt;module&gt;
      from tensorflow.python import pywrap_tensorflow as tf_session
    File "C:\Users\Or\AppData\Local\Enthought\Canopy\User\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 28, in &lt;module&gt;
      _pywrap_tensorflow = swig_import_helper()
    File "C:\Users\Or\AppData\Local\Enthought\Canopy\User\lib\site-packages\tensorflow\python\pywrap_tensorflow.py", line 20, in swig_import_helper
      import _pywrap_tensorflow
  ImportError: No module named _pywrap_tensorflow
  </code></pre>