chore: import upstream snapshot with attribution

python/paddle/quantization/imperative/__init__.py

@@ -0,0 +1,34 @@
+#   Copyright (c) 2022 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 (
+    ptq,  # noqa: F401
+    ptq_config,  # noqa: F401
+    ptq_quantizer,  # noqa: F401
+    ptq_registry,  # noqa: F401
+    qat,  # noqa: F401
+)
+from .ptq import ImperativePTQ  # noqa: F401
+from .ptq_config import PTQConfig, default_ptq_config  # noqa: F401
+from .ptq_quantizer import (  # noqa: F401
+    SUPPORT_ACT_QUANTIZERS,
+    SUPPORT_WT_QUANTIZERS,
+    AbsmaxQuantizer,
+    BaseQuantizer,
+    HistQuantizer,
+    KLQuantizer,
+    PerChannelAbsmaxQuantizer,
+)
+from .ptq_registry import PTQRegistry  # noqa: F401
+from .qat import ImperativeQuantAware  # noqa: F401