sd

Renderable
    - View
        - SectionList


class SectionList(View):
    def render(self, area, msg, x1, y1, x2, y2):
        View.renderBackground(self, area, x1, y1, x2, y2)
        for section in self._sections:
            section.render(area, msg, x1, y1, x2, y2)

        # instead of View.render()
        Renderable.render(self, area, msg, x1, y1, x2, y2)