title: Get list of open windows in Python
body: <p>I am writing an app in Python that must be able to send keys or text to another app. For example, if I have Firefox open, I should be able to send it an URL to open it.</p>
  
  <p>I already have the SendKeys module, and I have read about the win32 module too, but I do not know if there is a way to filter out process without open windows.</p>