Create __init__.py

ppcls/arch/head/__init__.py

+# 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 .arcmargin import ArcMargin
+from .cosmargin import CosMargin
+from .circlemargin import CircleMargin
+from .fc import FC
+
+__all__ = ['build_head']
+
+def build_head(config):
+    support_dict = ['ArcMargin', 'CosMargin', 'CircleMargin', 'FC']
+    module_name = config.pop('name')
+    assert module_name in support_dict, Exception('head only support {}'.format(
+        support_dict))
+    module_class = eval(module_name)(**config)
+    return module_class