chore: import upstream snapshot with attribution

python/paddle/callbacks.py

@@ -0,0 +1,35 @@
+# 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 .hapi.callbacks import (
+    Callback,
+    EarlyStopping,
+    LRScheduler,
+    ModelCheckpoint,
+    ProgBarLogger,
+    ReduceLROnPlateau,
+    VisualDL,
+    WandbCallback,
+)
+
+__all__ = [
+    'Callback',
+    'ProgBarLogger',
+    'ModelCheckpoint',
+    'VisualDL',
+    'LRScheduler',
+    'EarlyStopping',
+    'ReduceLROnPlateau',
+    'WandbCallback',
+]