chore: import upstream snapshot with attribution

python/paddle/_classes.py

@@ -0,0 +1,63 @@
+# Copyright (c) 2025 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.
+
+# The file has been adapted from pytorch project
+# Licensed under BSD-style license -
+# https://github.com/pytorch/pytorch/blob/main/LICENSE
+
+from __future__ import annotations
+
+import types
+from typing import Any
+
+import paddle
+
+from ._ops import import_module, load_library
+
+PADDLE_CLASSES_MODULE_NAME = "paddle.classes"
+
+
+class ClassesNameSpace(types.ModuleType):
+    def __init__(self, name: str):
+        super().__init__(f"{PADDLE_CLASSES_MODULE_NAME}.{name}")
+        self.name = name
+
+    def __getattr__(self, name: str) -> Any:
+        if name == "__file__":
+            return PADDLE_CLASSES_MODULE_NAME  # type: ignore
+        return paddle.base.core.torch_compat._get_custom_class_python_wrapper(
+            self.name, name
+        )
+
+
+class PaddleClassesModule(types.ModuleType):
+    __file__ = "_classes.py"
+
+    def __init__(self):
+        super().__init__(PADDLE_CLASSES_MODULE_NAME)
+
+    def __getattr__(self, name: str):
+        namespace = ClassesNameSpace(name)
+        # Insert to __dict__ to avoid repeatedly __getattr__ overhead
+        setattr(self, name, namespace)
+        return namespace
+
+    def import_module(self, module):
+        return import_module(module)
+
+    def load_library(self, path):
+        return load_library(path)
+
+
+classes = PaddleClassesModule()