def __init__(self, init_lr, gamma, iter_interval=1):
        '''
        Args:
            init_lr (float): Initial learning rate.
            gamma (float): Multiplier.
            iter_interval (int): Period of iteration at which gamma is multiplied.
                The default is 1.
        '''
        self.init_lr = init_lr
        self.gamma = gamma
        self.iter_interval = iter_interval
def __init__ ( self , init_lr , gamma , iter_interval = 1 ) : self . init_lr = init_lr self . gamma = gamma self . iter_interval = iter_interval
Args:
            init_lr (float): Initial learning rate.
            gamma (float): Multiplier.
            iter_interval (int): Period of iteration at which gamma is multiplied.
                The default is 1.