code: def __str__(self):
      return "%s=%f" % (self.short_name, self.get())
  
imports: import logging
  import math
  from abc import ABC, abstractmethod
  from typing import Any, Dict, Optional, Tuple
  import torch
  import numpy
  from .None import constants
  from .None import utils
label_desc: Use image node_id 3 for calling the LossMetric obj's underlying member method code with example usage: obj.__str__() and returns: unknown