def cube(x):
    return x*x*x
 
class xplage(object):
 
    def __init__(self, fn, deb, fin, pas=1):
        self.fn = fn
        self.cpt = deb  # initialisation du compteur
        self.fin = fin
        self.pas = pas
 
    def __iter__(self):
        return self
 
    def next(self):
        if self.cpt>=self.fin:
            raise StopIteration
        k = self.cpt
        self.cpt += self.pas  # incrementation du compteur
        return self.fn(k) 
 
for i in xplage(cube,0,10):
    print i