class_docstr: Track the result of an epoch.
  
  Args:
      metrics_for_best_model: A set of entry to calculate validation score.
      mode: (default = None) "train" or "valid" mode.
      axes: (default = None) The timestamp for the moment.
class_docstr_tok: ["Track","the","result","of","an","epoch",".","Args",":","metrics_for_best_model",":","A","set","of","entry","to","calculate","validation","score",".","mode",":","(","default","=","None",")","``","train","''","or","``","valid","''","mode",".","axes",":","(","default","=","None",")","The","timestamp","for","the","moment","."]
code: def __repr__(self):
      return self.as_str()
  
imports: from contextlib import contextmanager
  from copy import copy
  from accelerate.logging import get_logger
  import math
  import os
  from time import time
  from typing import Iterable, Optional, Set, Union, Callable
  import traceback
  import torch
  import wandb
  from wandb import AlertLevel
  from textbox.config.configurator import Config
label_desc: Use image node_id 11 for calling the EpochTracker obj's underlying member method code with example usage: obj.__repr__() and returns: self