[GitHub] szha commented on a change in pull request #9323: support setattr for some specified paramter of ParameterDict

[GitBox <gi...@apache.org>]

szha commented on a change in pull request #9323: support setattr for some specified paramter of ParameterDict
URL: https://github.com/apache/incubator-mxnet/pull/9323#discussion_r160039429
 
 

 ##########
 File path: python/mxnet/gluon/parameter.py
 ##########
 @@ -605,15 +605,27 @@ def setattr(self, name, value):
 
             model.collect_params().setattr('lr_mult', 0.5)
 
+        or set grad_req to null if you don't need gradient w.r.t  model's
+        Parameters in ['conv1_weight', 'conv1_bias']::
+
+            model.collect_params().setattr('grad_req', 'null', ['conv1_weight', 'conv1_bias'])
+
         Parameters
         ----------
         name : str
             Name of the attribute.
         value : valid type for attribute name
             The new value for the attribute.
+        selected_param_names : str or list
+            The selected paramters to be setattr.
         """
-        for i in self.values():
-            setattr(i, name, value)
+        if selected_param_names == "all":
+            selected_param_names = self.keys()
+        elif isinstance(selected_param_names, str):
+            selected_param_names = [selected_param_names]
 
 Review comment:
   "all" can be a valid parameter name.

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