Do not generate doc for op_role and op_attr_name

Author: reyoung

python/paddle/fluid/framework.py

@@ -361,6 +361,13 @@ def get_op_proto(self, type):
             raise ValueError("Operator \"%s\" has not been registered." % type)
         return self.op_proto_map[type]
 
+    @staticmethod
+    def generated_op_attr_names():
+        return {
+            core.op_proto_and_checker_maker.kOpRoleAttrName(),
+            core.op_proto_and_checker_maker.kOpRoleVarAttrName()
+        }
+
 
 class Operator(object):
     """

python/paddle/fluid/layers/layer_function_generator.py

@@ -75,7 +75,11 @@ def _type_to_str_(tp):
         buf.write(str(each_input.dispensable))
         buf.write('\n')
 
+    skip_attrs = OpProtoHolder.generated_op_attr_names()
+
     for each_attr in op_proto.attrs:
+        if each_attr.name in skip_attrs:
+            continue
         buf.write('    ')
         buf.write(each_attr.name)
         buf.write(' (')