python list cycle alternatives

gistfile1.py

# current:
    def __init__(self, listVals):
        self.listVals = listVals
        self.currentIndex = -1

    def sample(self, ignoredValue):
        self.currentIndex = self.currentIndex + 1 if self.currentIndex < len(self.listVals) - 1 else 0
        return self.listVals[self.currentIndex]

# % variation:
    def sample(self, ignoredValue):
        self.currentIndex = (self.currentIndex + 1) % len(self.listVals)
        return self.listVals[self.currentIndex]

# itertools.cycle variation:
    def __init__(self, listVals):
        self.listValsCycle = itertools.cycle(listVals)

    def sample(self, ignoredValue):
        return next(self.listValsCycle)