chore: import upstream snapshot with attribution

python/paddle/distributed/fleet/dataset/__init__.py

@@ -0,0 +1,22 @@
+#   Copyright (c) 2019 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
+
+from .dataset import (  # noqa: F401
+    DatasetBase,
+    FileInstantDataset,
+    InMemoryDataset,
+    QueueDataset,
+)
+from .index_dataset import TreeIndex  # noqa: F401
+
+__all__ = []