title: How to refresh sys.path?
body: <p>I've installed some packages during the execution of my script as a user. Those packages were the first user packages, so python didn't add <code>~/.local/lib/python2.7/site-packages</code> to the <code>sys.path</code> before script run. I want to import those installed packages. But I cannot because they are not in <code>sys.path</code>.</p>
  
  <p>How can I refresh <code>sys.path</code>?</p>
  
  <p>I'm using python 2.7.</p>