code: def add_widgets(self, *widgets_or_spacings):
          
          layout = self.layout()
          for widget_or_spacing in widgets_or_spacings:
              if isinstance(widget_or_spacing, int):
                  layout.addSpacing(widget_or_spacing)
              else:
                  layout.addWidget(widget_or_spacing)
docs: Add widgets/spacing to dialog vertical layout