code: def task2(self, ident):
      for i in range(NUMTRIPS):
          if ident == 0:
              # give it a good chance to enter the next
              # barrier before the others are all out
              # of the current one
              delay = 0
          else:
              with self.random_mutex:
                  delay = random.random() / 10000.0
          verbose_print(
              "task %s will run for %sus" % (ident, round(delay * 1e6))
          )
          time.sleep(delay)
          verbose_print("task %s entering %s" % (ident, i))
          self.bar.enter()
          verbose_print("task %s leaving barrier" % ident)
      with self.running_mutex:
          self.running -= 1
          # Must release mutex before releasing done, else the main thread can
          # exit and set mutex to None as part of global teardown; then
          # mutex.release() raises AttributeError.
          finished = self.running == 0
      if finished:
          self.done_mutex.release()
  
imports: import os
  import unittest
  import random
  from test import support
  from test.support import threading_helper
  import _thread
  import time
  import warnings
  import weakref
  from test import lock_tests
label_desc: Use image node_id 2 for calling the BarrierTest obj's underlying member method code with example usage: obj.task2(ident) without return types