[OpAtttr]Add attribute var interface for Operator class (#45525)

* [OpAtttr]Add attribute var interface for Operator class

* fix unittest

* fix unittest

python/paddle/fluid/framework.py

@@ -3138,7 +3138,7 @@ class Operator(object):
         Returns:
             core.AttrType: the attribute type.
         """
-        return self.desc.attr_type(name)
+        return self.desc.attr_type(name, True)
 
     def _set_attr(self, name, val):
         """
@@ -3290,6 +3290,41 @@ class Operator(object):
 
         return self.desc._blocks_attr_ids(name)
 
+    def _var_attr(self, name):
+        """
+        Get the Variable attribute  by name.
+
+        Args:
+            name(str): the attribute name.
+
+        Returns:
+            Variable: the Variable attribute.
+        """
+        attr_type = self.desc.attr_type(name, True)
+        assert attr_type == core.AttrType.VAR, "Required type attr({}) is Variable, but received {}".format(
+            name, attr_type)
+        attr_var_name = self.desc.attr(name, True).name()
+        return self.block._var_recursive(attr_var_name)
+
+    def _vars_attr(self, name):
+        """
+        Get the Variables attribute  by name.
+
+        Args:
+            name(str): the attribute name.
+
+        Returns:
+            Variables: the Variables attribute.
+        """
+        attr_type = self.desc.attr_type(name, True)
+        assert attr_type == core.AttrType.VARS, "Required type attr({}) is list[Variable], but received {}".format(
+            name, attr_type)
+        attr_vars = [
+            self.block._var_recursive(var.name())
+            for var in self.desc.attr(name, True)
+        ]
+        return attr_vars
+
     def all_attrs(self):
         """
         Get the attribute dict.
@@ -3300,15 +3335,16 @@ class Operator(object):
         attr_names = self.attr_names
         attr_map = {}
         for n in attr_names:
-            attr_type = self.desc.attr_type(n)
+            attr_type = self.desc.attr_type(n, True)
             if attr_type == core.AttrType.BLOCK:
                 attr_map[n] = self._block_attr(n)
-                continue
-
-            if attr_type == core.AttrType.BLOCKS:
+            elif attr_type == core.AttrType.BLOCKS:
                 attr_map[n] = self._blocks_attr(n)
-                continue
-
+            elif attr_type == core.AttrType.VAR:
+                attr_map[n] = self._var_attr(n)
+            elif attr_type == core.AttrType.VARS:
+                attr_map[n] = self._vars_attr(n)
+            else:
                 attr_map[n] = self.attr(n)
 
         return attr_map

python/paddle/fluid/tests/unittests/test_attribute_var.py

@@ -96,6 +96,10 @@ class TestDropout(UnittestBase):
             infer_out = self.infer_prog()
             self.assertEqual(infer_out.shape, (10, 10))
 
+            self.assertEqual(
+                main_prog.block(0).ops[4].all_attrs()['dropout_prob'].name,
+                p.name)
+
 
 class TestTileTensorList(UnittestBase):
 

python/paddle/fluid/tests/unittests/test_reverse_op.py

@@ -258,6 +258,12 @@ class TestReverseAxisListTensor(TestReverseAxisTensor):
         # axes is a List[Variable]
         axes = [paddle.assign([0]), paddle.assign([2])]
         out = paddle.fluid.layers.reverse(x, axes)
+
+        # check attrs
+        axis_attrs = paddle.static.default_main_program().block(
+            0).ops[-1].all_attrs()["axis"]
+        self.assertTrue(axis_attrs[0].name, axes[0].name)
+        self.assertTrue(axis_attrs[1].name, axes[1].name)
         return out