class_docstr: Computes the sum/avg duration of some event in seconds
class_docstr_tok: ["Computes","the","sum\/avg","duration","of","some","event","in","seconds"]
code: def __init__(self, round: Optional[int] = None):
      self.round = round
      self.sum = 0
      self.n = 0
      self.start_time = None
  
imports: import bisect
  import time
  from collections import OrderedDict
  from typing import Dict, Optional
label_desc: Use image node_id 1 to create a new StopwatchMeter object from inherited base classes: Meter with example: obj = StopwatchMeter(round)