code: def setUp(self):
      self.COMM = self.COMM.Dup()
      self.COMM.Set_errhandler(MPI.ERRORS_RETURN)
  
imports: from mpi4py import MPI
  import mpiunittest
  import warnings
  import struct
label_desc: Use image node_id 1 for calling the BaseTestULFM obj's underlying member method code with example usage: obj.setUp() without return types