def __init__(self, A): Pdc.__init__(self, 2) self.A = A
def __init__(self, f, pdc): Pdc.__init__(self, f.nb_arg()) self.f = f self.pdc = pdc
def __init__(self, f, itv1, itv2=None): Pdc.__init__(self, f.nb_arg()) self.itv = itv1 self.itv2 = itv2 self.f = f