code: def zero_losses(self):
      for k in self.losses.keys():
          self.losses[k] = 0
  
imports: import torch
  import tqdm
  from ..utils import common_functions
  from ..utils import loss_tracker
  from ..utils.key_checker import KeyChecker, KeyCheckerDict
label_desc: Use image node_id 8 for calling the BaseTrainer obj's underlying member method code with example usage: obj.zero_losses() without return types