code: def tearDown(self):
      self.INTRACOMM.Free()
      self.INTERCOMM.Free()
  
imports: from mpi4py import MPI
  import mpiunittest
  from functools import reduce
label_desc: Use image node_id 2 for calling the BaseTestCCOObjInter obj's underlying member method code with example usage: obj.tearDown() without return types