Add regex support for selecting optim object

ppcls/optimizer/__init__.py

@@ -16,6 +16,7 @@ from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 
+import re
 import copy
 import paddle
 from typing import Dict, List
@@ -120,6 +121,11 @@ def build_optimizer(config, epochs, step_each_epoch, model_list=None):
                         optim_model.append(model_list[i])
                     elif hasattr(model_list[i], optim_scope):
                         optim_model.append(getattr(model_list[i], optim_scope))
+                    else:
+                        for name, layer in model_list[i].named_sublayers():
+                            if len(layer.parameters()) != 0 \
+                                    and re.fullmatch(optim_scope, name):
+                                optim_model.append(layer)
 
         optim = getattr(optimizer, optim_name)(
             learning_rate=lr, grad_clip=grad_clip,