> since 7 doesn't increase cleanly, I probably have to custom-code the final update to 100 manually, What do you mean with "not cleanly"? bar.update_smooth(i

> since 7 doesn't increase cleanly, I probably have to custom-code the final update to 100 manually, What do you mean with "not cleanly"? bar.update_smooth(i * 100 / 7) Once i is 7, this will be equal to 100. No matter your rounding mode. You don't need a CS degree for that formula.