From 4621f82fe94942f4458173b6dde7d42b5d93a9b6 Mon Sep 17 00:00:00 2001
From: feifei-111 <wuzhanfei@baidu.com>
Date: Thu, 22 Sep 2022 11:07:18 +0800
Subject: [PATCH] [API] added 'place' dummy interface for variable (#45877)

* place

* add test

* fix spell and test

* fix anno

* code style
---
 python/paddle/fluid/layers/math_op_patch.py   | 25 +++++++++++----
 .../unittests/dygraph_to_static/test_place.py | 32 +++++++++++++++++++
 2 files changed, 51 insertions(+), 6 deletions(-)
 create mode 100644 python/paddle/fluid/tests/unittests/dygraph_to_static/test_place.py

diff --git a/python/paddle/fluid/layers/math_op_patch.py b/python/paddle/fluid/layers/math_op_patch.py
index 1afea145e4a..4bb6931c8a4 100644
--- a/python/paddle/fluid/layers/math_op_patch.py
+++ b/python/paddle/fluid/layers/math_op_patch.py
@@ -132,21 +132,33 @@ def monkey_patch_variable():
     @static_only
     def cpu(self):
         """
-            Variable should not have cpu() and cuda() interface.
-            But this interface can greatly facilitate dy2static.
-            We do nothing here.
+        Variable should not have cpu() and cuda() interface.
+        But this interface can greatly facilitate dy2static.
+        We do nothing here.
         """
         return self
 
     @static_only
     def cuda(self):
         """
-            Variable should not have cpu() and cuda() interface.
-            But this interface can greatly facilitate dy2static.
-            We do nothing here.
+        Variable should not have cpu() and cuda() interface.
+        But this interface can greatly facilitate dy2static.
+        We do nothing here.
         """
         return self
 
+    @static_only
+    def place(self):
+        """
+        Variable don't have 'place' interface in static mode
+        But this interface can greatly facilitate dy2static.
+        So we give a warnning here and return None.
+        """
+        warnings.warn(
+            "Variable do not have 'place' interface for static mode, try not to use it. None will be returned."
+        )
+        return None
+
     def astype(self, dtype):
         """
         **Notes**:
@@ -427,6 +439,7 @@ def monkey_patch_variable():
         ('astype', astype),
         ('cpu', cpu),
         ('cuda', cuda),
+        ('place', place),
         ('append', append),
         ('item', _item),
         ('pop', pop),
diff --git a/python/paddle/fluid/tests/unittests/dygraph_to_static/test_place.py b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_place.py
new file mode 100644
index 00000000000..7e177ee0c0c
--- /dev/null
+++ b/python/paddle/fluid/tests/unittests/dygraph_to_static/test_place.py
@@ -0,0 +1,32 @@
+#   Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import print_function
+
+import numpy as np
+import paddle
+import unittest
+
+
+class TestPlace(unittest.TestCase):
+
+    def test_place(self):
+
+        paddle.enable_static()
+        x = paddle.to_tensor([1, 2, 3, 4])
+        self.assertTrue(x.place() == None)
+
+
+if __name__ == '__main__':
+    unittest.main()
-- 
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