class_docstr: Time an individual call.
class_docstr_tok: ["Time","an","individual","call","."]
code: def __exit__(
      self, unused_exception_type, unused_exc_value, unused_traceback
  ):
      self._sw.add(self._sw.pop(), time.time() - self._start)
  
imports: import collections
  import functools
  import math
  import os
  import sys
  import threading
  import time
label_desc: Use image node_id 3 for calling the StopWatchContext obj's underlying member method code with example usage: obj.__exit__(unused_exception_type, unused_exc_value, unused_traceback) without return types