code: def __init__(self, dataloader):
      self._dataloader = dataloader
      self.iter_loader = iter(self._dataloader)
      self._epoch = 0
  
imports: import os.path
  import platform
  import shutil
  import time
  import warnings
  import torch
  from torch.optim import Optimizer
  import annotator.uniformer.mmcv
  from .base_runner import BaseRunner
  from .builder import RUNNERS
  from .checkpoint import save_checkpoint
  from .hooks import IterTimerHook
  from .utils import get_host_info
label_desc: Use image node_id 1 to create a new IterLoader object  with example: obj = IterLoader(dataloader)