title: Why do I get AttributeError: module 'tensorflow' has no attribute 'placeholder'?
body: <p>I was able to run my python program three weeks ago but now every time I try to run it, I get the following error:</p>
  
  <pre><code>AttributeError: module 'tensorflow' has no attribute 'placeholder'
  </code></pre>
  
  <p>I have tensorflow installed (version '2.0.0-alpha0').
  I have read a couple of posts related to this issue. They say I should uninstall TensorFlow and re-install it again. The problem is that I am running this on a cluster computer and I do not have <code>sudo</code> permissions.</p>
  
  <p>Any idea?</p>