class_docstr: Default PyTorch pogress meter
class_docstr_tok: ["Default","PyTorch","pogress","meter"]
code: def _get_batch_fmtstr(self, num_batches):
      num_digits = len(str(num_batches // 1))
      fmt = "{:" + str(num_digits) + "d}"
      return "[" + fmt + "/" + fmt.format(num_batches) + "]"
  
imports: import os
  import sys
  import time
  import functools
  import logging
  from contextlib import contextmanager
  from functools import wraps
  import numpy
  import torch.nn
  import torch
label_desc: Use image node_id 3 for calling the ProgressMeter obj's underlying member method code with example usage: obj._get_batch_fmtstr(num_batches) and returns: unknown