code: def __init__(self, num_batches, meters, prefix=""):
      self.batch_fmtstr = self._get_batch_fmtstr(num_batches)
      self.meters = meters
      self.prefix = prefix
  
imports: import collections
  import torch
  from torch import Tensor
  import torch.nn
  import torch.backends.cudnn
  import subprocess
  import os
  import time
  import shutil
  from datetime import datetime
  import torch.optim
  from torch.optim import lr_scheduler
  import sys
  import models
  import numpy
  import torch.nn
  import math
label_desc: Use image node_id 1 to create a new ProgressMeter object from inherited base classes: object with example: obj = ProgressMeter(num_batches, meters, prefix)