def _format_widgets(self): result = [] expanding = [] width = self.term_width for index, widget in enumerate(self.widgets): if isinstance(widget, widgets.WidgetHFill): result.append(widget) expanding.insert(0, index) else: widget = widgets.format_updatable(widget, self) result.append(widget) width -= len(widget) count = len(expanding) while count: portion = max(int(math.ceil(width * 1. / count)), 0) index = expanding.pop() count -= 1 widget = result[index].update(self, portion) width -= len(widget) result[index] = widget return result