title: PyQt5 application visible in all cinnamon/gnome workspaces
body: <p>I am trying to have an application written in <code>pyqt5</code> always visible in all the <code>cinnamon/gnome</code> virtual work spaces.<br>
  <strong>Example:</strong> <code>'conky'</code><br>
  But investigating <code>QDesktopApplication</code>, <code>QWindow</code> and <code>QScreen</code> doesn't seem to be the right way. Any address please?</p>
  
  <p><strong>Edit</strong>: I had already seen the answer at <a href="https://stackoverflow.com/questions/16775352">Keep a application window always on current desktop on linux and mac</a> and it is a C++ answer but my question is about <code>pyQt5</code>. It seems that the direction is to work with a kind of C++ wrapper.</p>