class_docstr: Timer class for recording elapsed wall time in operations.
class_docstr_tok: ["Timer","class","for","recording","elapsed","wall","time","in","operations","."]
code: def __init__(self, start=True):
      if start:
          self.start()
  
imports: import time
label_desc: Use image node_id 1 to create a new Stopwatch object  with example: obj = Stopwatch(start)