def on_step_end(self, **kwargs):
        "Put the LR back to its value if necessary."
        if not self.learn.gan_trainer.gen_mode: self.learn.opt.lr /= self.mult_lr
def on_step_end ( self , ** kwargs ) : if not self . learn . gan_trainer . gen_mode : self . learn . opt . lr /= self . mult_lr
Put the LR back to its value if necessary.