code: def testIsCancelled(self):
      flag = self.STATUS.Is_cancelled()
      self.assertIs(type(flag), bool)
      self.assertFalse(flag)
  
file_path: mpi4py/test/test_status.py
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 7 for calling the TestStatus obj's underlying member method code with example usage: obj.testIsCancelled() without return types