title: ModuleNotFoundError in Spyder
body: <p>I tried to import the biopython package in Spyder and got the error message:</p>
  <pre><code>ModuleNotFoundError: No module named 'biopython' 
  </code></pre>
  <p>although biopython is installed.</p>
  <p>I also checked the PYTHONPATH: there is a path set into the directory where the packages are stored.</p>
  <p>Can somebody help? Did I miss something? Thanks for your help!</p>