chore: import upstream snapshot with attribution

python/paddle/static/amp/__init__.py

@@ -0,0 +1,28 @@
+#   Copyright (c) 2020 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 . import (  # noqa: F401
+    bf16,
+    debugging,
+    decorator,
+    fp16_lists,
+    fp16_utils,
+)
+from .decorator import decorate  # noqa: F401
+from .fp16_lists import AutoMixedPrecisionLists, CustomOpLists  # noqa: F401
+from .fp16_utils import (  # noqa: F401
+    cast_model_to_fp16,
+    cast_parameters_to_fp16,
+    fp16_guard,
+)