def after_update(self):
    self.observations[0].copy_(self.observations[(- 1)])
    self.states[0].copy_(self.states[(- 1)])
    self.masks[0].copy_(self.masks[(- 1)])
def after_update(self):
    self.observations[0].copy_(self.observations[(- 1)])
    self.states[0].copy_(self.states[(- 1)])
    self.masks[0].copy_(self.masks[(- 1)])