<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def save(self, path):
 """Save loss in json format """

    json.dump(dict(loss=self.__class__.__name__,
                   params=self.hparams),
              open(os.path.join(path, 'loss.json'), 'wb'))