def set_screen(self, screen, warp=True):
        """Set this group's screen to screen"""
        if screen == self.screen:
            return
        self.screen = screen
        if self.screen:
            # move all floating guys offset to new screen
            self.floating_layout.to_screen(self, self.screen)
            self.layout_all(warp=warp and self.qtile.config.cursor_warp)
            screen_rect = self.screen.get_rect()
            self.floating_layout.show(screen_rect)
            self.layout.show(screen_rect)
        else:
            self.hide()
Set this group's screen to screen
libqtile/group.py