Op 09-10-14 om 03:42 schreef Ben Finney: > Seymore4Head <Seymore4Head@Hotmail.invalid> writes: > >> I want to toggle between color="Red" and color="Blue" > It's good to cultivate ongoing familiarity with the standard library > <URL:https://docs.python.org/3/library/itertools.html#itertools.cycle> > so that you can make use of wheels already invented and maintained:: > > import itertools > > colours = ["Red", "Blue"] > colour_cycle = itertools.cycle(colours) > > next(colour_cycle) # → "Red" > next(colour_cycle) # → "Blue" > next(colour_cycle) # → "Red" > next(colour_cycle) # → "Blue" > next(colour_cycle) # → "Red" > > for colour in colour_cycle: > # … loops indefinitely > # with ‘colour’ bound to each value in turn …
I think this solution will become rather involved fast, when you have multiple toggles. -- Antoon Pardon -- https://mail.python.org/mailman/listinfo/python-list
