code: def tearDown(self):
      if self.FILE == MPI.FILE_NULL:
          return
      amode = self.FILE.amode
      self.FILE.Close()
      if not (amode & MPI.MODE_DELETE_ON_CLOSE):
          MPI.File.Delete(self.fname, MPI.INFO_NULL)
  
imports: from mpi4py import MPI
  import mpiunittest
  import os, tempfile, pathlib
label_desc: Use image node_id 2 for calling the BaseTestFile obj's underlying member method code with example usage: obj.tearDown() without return types