class_docstr: Keeps track of mean and standard deviation of some value for a given window.
code: def add(self, value):
      queueid = self.n % self.windowsize
      oldvalue = self.valuequeue[queueid]
      self.sum += value - oldvalue
      self.var += value * value - oldvalue * oldvalue
      self.valuequeue[queueid] = value
      self.n += 1
  
file_path: pywick/pywick/meters/movingaveragevaluemeter.py
imports: import math
  from .None import meter
  import torch
label_desc: Use image node_id 3 for calling the MovingAverageValueMeter obj's underlying member method code with example usage: obj.add(value) without return types