title: Import error : No module named plotly.plotly
body: <p>I am working on project and getting this error  </p>
  
  <blockquote>
    <p>ImportError: No module named plotly.plotly</p>
  </blockquote>
  
  <p>I tried:</p>
  
  <ol>
  <li>pip install plotly</li>
  <li>pip install --upgrade plotly</li>
  </ol>
  
  <p>But <code>import plotly.plotly as py</code> didn't work.</p>