code: def get_learning_rate(self, iter):
          '''
          Get learning rate with exponential decay based on current iteration.
  
          Args:
              iter (int): Current iteration (starting with 0).
  
          Returns:
              float: Learning rate
          '''
  
          return self.init_lr * (self.gamma ** (iter // self.iter_interval)f get_learning_rate(self, iter):
          '''
          Get learning rate with exponential decay based on current iteration.
  
          Args:
              iter (int): Current iteration (starting with 0).
  
          Returns:
              float: Learning rate
          '''
  
          return self.init_lr * (self.gamma ** (iter // self.iter_interval))
docs: Get learning rate with exponential decay based on current iteration.
  
          Args:
              iter (int): Current iteration (starting with 0).
  
          Returns:
              float: Learning rate