title: Python and Gtk - which GTK version is being used?
body: <pre><code>from gi.repository import Gtk
  
  #print Gtk.GTK_MAJOR_VERSION
  
  win = Gtk.Window()
  win.connect("delete-event", Gtk.main_quit)
  win.show_all()
  Gtk.main()
  </code></pre>
  
  <p>That is my code, how can I know which version of Gtk is being used.</p>
  
  <p>Thank you!</p>