def exit_full_screen(self):
    'Exit full screen mode.'
    if self.is_full_screen:
        self._impl.exit_full_screen(self._full_screen_windows)
        self._full_screen_windows = None
Exit full screen mode.
def exit_full_screen(self):
    
    if self.is_full_screen:
        self._impl.exit_full_screen(self._full_screen_windows)
        self._full_screen_windows = None