chore: import upstream snapshot with attribution

python/paddle/_typing/layout.py

@@ -0,0 +1,29 @@
+# Copyright (c) 2024 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 annotations
+
+from typing import Literal, TypeAlias
+
+# Note: Do not conform to predefined naming style in pylint.
+DataLayout0D: TypeAlias = Literal["NC"]
+DataLayout1D: TypeAlias = Literal["NCL", "NLC"]
+DataLayout2D: TypeAlias = Literal["NCHW", "NHWC"]
+DataLayout3D: TypeAlias = Literal["NCDHW", "NDHWC"]
+
+DataLayoutND: TypeAlias = (
+    DataLayout0D | DataLayout1D | DataLayout2D | DataLayout3D
+)
+
+DataLayout1DVariant: TypeAlias = Literal["NCW", "NWC"]
+DataLayoutImage: TypeAlias = Literal["HWC", "CHW"]