title: How to fix 'No module named 'tensorflow.contrib' for python project?
body: <p>I found a chatbot program in github and wanted to run this program for my better understanding. But every time I try to run this program, it says</p>
  
  <blockquote>
    <p>No module named 'tensorflow.contrib'</p>
  </blockquote>
  
  <p>What should I do to fix this error?</p>