title: ImportError: dynamic module does not define module export function (PyInit_bz2)
body: <p>I tried to use <code>import bz2</code>, but I got the following error,</p>
  
  <pre><code>ImportError: dynamic module does not define module export function (PyInit_bz2)
  </code></pre>
  
  <p>I think <code>bz2</code> is a <code>python</code> standard lib.</p>
  
  <p>I am using a <code>Python3.6.4</code> virtual environment on <code>CentOS 7</code>, I am wondering how to fix it.</p>