title: Obtain Active window using Python
body: <p>I would like to get the active window on the screen using python.</p>
  
  <p>For example, the management interface of the router where you enter the username and password as admin</p>
  
  <p>That admin interface is what I want to capture using python to automate the entry of username and password.</p>
  
  <p>What imports would I require in order to do this?</p>