Well, the label.set_text() uses message passing, and the label. get_text_metrics() doesn’t. That’s why they work as they do. Granted
Ideally, I’d have something like a label.calc_text_metrics(font, text), but currently, we don’t have a way to reference the font object to pass in there. Hmm, maybe if we also had a label.get_font()… I’ll discuss this with the team next week.