def __init__(self, params):
    super().__init__(params)
    self.with_mean = params.with_mean
    self.with_std = params.with_std
    self.mean = None
    self.std = None
def __init__(self, params):
    super().__init__(params)
    self.with_mean = params.with_mean
    self.with_std = params.with_std
    self.mean = None
    self.std = None