!6672 [bug]fix bug for tensor store, while switch between pynative mode and graph mode

Merge pull request !6672 from vlne-v1/code_style_r1.0

mindspore/nn/cell.py

@@ -228,11 +228,12 @@ class Cell(Cell_):
             cells = self.__dict__['_cells']
             if name in cells:
                 return cells[name]
-        if context.get_context("mode") == context.PYNATIVE_MODE and '_params_list' in self.__dict__:
-            params_list = self.__dict__['_params_list']
+        if '_tensor_list' in self.__dict__:
             tensor_list = self.__dict__['_tensor_list']
             if name in tensor_list:
                 return self.cast_param(tensor_list[name])
+        if '_params_list' in self.__dict__:
+            params_list = self.__dict__['_params_list']
             if name in params_list:
                 para_list = params_list[name]
                 cast_list = list()
@@ -253,6 +254,10 @@ class Cell(Cell_):
         elif name in self._cells:
             del self._cells[name]
         else:
+            if '_params_list' in self.__dict__ and name in self._params_list:
+                del self._params_list[name]
+            elif '_tensor_list' in self.__dict__ and name in self._tensor_list:
+                del self._tensor_list[name]
             object.__delattr__(self, name)
         self._attr_synced = False