chore: import upstream snapshot with attribution

tensorflow/python/__init__.py

@@ -0,0 +1,34 @@
+# Copyright 2015 The TensorFlow 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.
+# ==============================================================================
+"""TensorFlow Python init file."""
+
+# Do not add code to //third_party/tensorflow/python/__init__.py.
+# This file is imported whenever TensorFlow is imported.
+# Additional imports in this file could cause the internal
+# import time of TensorFlow to increase by multiple seconds.
+
+
+# Special dunders that we choose to export:
+_exported_dunders = set([
+    '__version__',
+    '__git_version__',
+    '__compiler_version__',
+    '__cxx11_abi_flag__',
+    '__monolithic_build__',
+])
+
+# Expose symbols minus dunders, unless they are allowlisted above.
+# This is necessary to export our dunders.
+__all__ = [s for s in dir() if s in _exported_dunders or not s.startswith('_')]