add attr() interface to layer

python/paddle/v2/config_base.py

@@ -16,6 +16,7 @@ import collections
 import re
 from paddle.trainer_config_helpers.default_decorators import wrap_name_default
 import paddle.trainer_config_helpers as conf_helps
+from topology import Topology
 
 
 class LayerType(type):
@@ -161,6 +162,10 @@ class Layer(object):
         """
         return self.__context__[self.context_name()].size
 
+    def attr(self):
+        topo = Topology(self)
+        return topo.get_layer_proto(self.name)
+
 
 def __convert_to_v2__(method_name,
                       parent_names,

python/paddle/v2/topology.py

@@ -130,6 +130,12 @@ class Topology(object):
         return [(nm, data_layers[nm].type)
                 for nm in self.proto().input_layer_names]
 
+    def get_layer_proto(self, name):
+        for layer in self.__model_config__.layers:
+            if layer.name == name:
+                return layer
+        return None
+
 
 def __check_layer_type__(layer):
     if not isinstance(layer, v2_layer.LayerV2):