!37254 Ignore exceptions during python termination

Merge pull request !37254 from h.farahat/mp_ter

mindspore/python/mindspore/dataset/engine/datasets.py

@@ -2928,7 +2928,10 @@ class _PythonMultiprocessing(cde.PythonMultiprocessingRuntime):
         self.threads_to_workers = {}
 
     def __del__(self):
-        self.terminate()
+        try:
+            self.terminate()
+        except TypeError:
+            pass
 
     # This wait function is for cleaning zombie subprocesses
     @staticmethod

mindspore/python/mindspore/dataset/engine/datasets_user_defined.py

@@ -341,7 +341,10 @@ class SamplerFn:
             thread.join()
 
     def __del__(self):
-        self._stop_subprocess()
+        try:
+            self._stop_subprocess()
+        except TypeError:
+            pass
 
 
 def _subprocess_handle(eof, signum, frame):