class_docstr: Track a series of values and provide access to smoothed values over a
  window or the global series average.
code: def global_avg(self):
      return self.total / self.count
  
imports: from collections import defaultdict, deque
  import datetime
  import pickle
  import time
  import errno
  import os
  import torch
  import torch.distributed
label_desc: Use image node_id 6 for calling the SmoothedValue obj's underlying member method code with example usage: obj.global_avg() and returns: unknown