title: Can't import merkletools library in Python
body: <p>I save successfully executed merkletools operations in normal python scripts. But when working on <strong>CGI</strong> scripts, I cant import merkletools library using <code>from merkletools import MerkleTools</code> . Is there any solution for this ?</p>
  
  <p>I am working on apache2 server. apache2 error log is as follows</p>
  
  <pre><code>    [Tue Oct 30 17:16:13.309058 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215: Traceback (most recent call last):: /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309199 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215:   File "/var/www/cgi-bin/file.py", line 2, in &lt;module&gt;: /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309254 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215:     : /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309299 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215: from merkletools import MerkleTools: /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309345 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215: ImportError: /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309386 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215: : : /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309428 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215: No module named merkletools: /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.309449 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] AH01215: : /var/www/cgi-bin/file.py, referer: http://192.168.2.91/
      [Tue Oct 30 17:16:13.311719 2018] [cgi:error] [pid 23964:tid 139710529734400] [client 192.168.2.91:51042] End of script output before headers: file.py, referer: http://192.168.2.91/
  </code></pre>