code: def setUp(self):
      win = MPI.Win.Create(MPI.BOTTOM, 1, MPI.INFO_NULL, MPI.COMM_SELF)
      self.obj = self.win = win
  
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 1 for calling the TestWinAttr obj's underlying member method code with example usage: obj.setUp() without return types