title: Change mod_wsgi from python3.5 to 3.6
body: <p>I have a flask app that used to run with python3.5 on apache2.
  I am now trying to change it to run on 3.6 (i have sone type hinting in my code that is only supported on 3.6).
  <br><br> I have installed the module for python3.6, but when tried to restart apache and run my app, it fails.
  <br> When running </p>
  
  <pre><code>mod_wsgi-express module-location
  </code></pre>
  
  <p>I have the python3.5 version<br></p>
  
  <pre><code>/usr/local/lib/python3.5/dist-packages/mod_wsgi/server/mod_wsgi-py35.cpython-35m-x86_64-linux-gnu.so
  </code></pre>
  
  <p>The same file also existis on my server in python3.6 dir.
  <br>I also changed my $PATH to run python3.6 as a default for python.
  <br>How can I tell apache to run on python3.6 and not on 3.5?</p>