title: No module named 'absl' error when I import tensorflow
body: <p>I have anaconda installed on my Win 7 machine with a GTX1070.</p>
  
  <p>I have been trying to install tensorflow gpu version for the past hour with no luck. I followed the tutorials on the tensorflow <a href="https://www.tensorflow.org/install/install_windows" rel="noreferrer">website</a> to no success. They ask for you to install CUDA 8.0 and Cudll 6.0 which I do. I then add the location of cudnn64_6.dll, cudart64_80.dll and the libnvvp folder to my path variables. I then set up a virtual environment in conda and run the following command:</p>
  
  <pre><code>(tensorflow)C:&gt; pip install --ignore-installed --upgrade tensorflow-gpu 
  </code></pre>
  
  <p>I believe when I do this, it installs tensorflow 1.5 which seems to require CUDA tools 9.0 because I get an error saying that cudart64_80.dll cannot be found. So I update my CUDA tools to 9.0 and download the corresponding Cuda library. I then change my path variables. Now I dont get any missing dll errors however, I am now faced with the following error</p>
  
  <pre><code>ModuleNotFoundError: No module named 'absl'
  </code></pre>
  
  <p>Does anyone have any suggestions as to what I can do from here on?</p>