Add missing copyright headers (#1030) * Add missing copyright headers Done by running: `addlicense -v -c "The Bazel Authors. All rights reserved." .` With a few changes reverted because they're for generated files or test goldens. Fixes #916

diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index 085a873..95fdea6 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 buildifier:
   version: latest

diff --git a/.bcr/config.yml b/.bcr/config.yml
index ba611eb..024e524 100644
--- a/.bcr/config.yml
+++ b/.bcr/config.yml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 fixedReleaser:
   login: f0rmiga
   email: thulio@aspect.dev

diff --git a/.bcr/presubmit.yml b/.bcr/presubmit.yml
index 90e3122..252df6b 100644
--- a/.bcr/presubmit.yml
+++ b/.bcr/presubmit.yml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 bcr_test_module:
   module_path: "examples/bzlmod"
   matrix:

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 85c865e..5b1cde0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # Cut a release whenever a new tag is pushed to the repo.
 name: Release
 

diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 816ce1d..8d388e2 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # See https://github.com/marketplace/actions/close-stale-issues
 
 name: Mark stale issues and pull requests

diff --git a/.github/workflows/workspace_snippet.sh b/.github/workflows/workspace_snippet.sh
index 843be7a..bfc0d8b 100755
--- a/.github/workflows/workspace_snippet.sh
+++ b/.github/workflows/workspace_snippet.sh

@@ -1,4 +1,18 @@
 #!/usr/bin/env bash
+# Copyright 2023 The Bazel 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.
+
 
 set -o errexit -o nounset -o pipefail
 

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 9836759..e4ae5d3 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # See CONTRIBUTING.md for instructions.
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks

diff --git a/examples/build_file_generation/gazelle_python.yaml b/examples/build_file_generation/gazelle_python.yaml
index 847d1ec..9953ad3 100644
--- a/examples/build_file_generation/gazelle_python.yaml
+++ b/examples/build_file_generation/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # GENERATED FILE - DO NOT EDIT!
 #
 # To update this file, run:

diff --git a/examples/build_file_generation/random_number_generator/__init__.py b/examples/build_file_generation/random_number_generator/__init__.py
index e69de29..bbdfb4c 100644
--- a/examples/build_file_generation/random_number_generator/__init__.py
+++ b/examples/build_file_generation/random_number_generator/__init__.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/examples/bzlmod/__init__.py b/examples/bzlmod/__init__.py
index 955eb5a..646c6e8 100644
--- a/examples/bzlmod/__init__.py
+++ b/examples/bzlmod/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 tabulate import tabulate
 
 

diff --git a/examples/bzlmod/__main__.py b/examples/bzlmod/__main__.py
index 8b4cb13..b173bd6 100644
--- a/examples/bzlmod/__main__.py
+++ b/examples/bzlmod/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 __init__ import main
 
 if __name__ == "__main__":

diff --git a/examples/bzlmod/other_module/other_module/pkg/lib.py b/examples/bzlmod/other_module/other_module/pkg/lib.py
index 48f6b58..eaf65fb 100644
--- a/examples/bzlmod/other_module/other_module/pkg/lib.py
+++ b/examples/bzlmod/other_module/other_module/pkg/lib.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 python.runfiles import runfiles
 
 

diff --git a/examples/bzlmod/runfiles/runfiles_test.py b/examples/bzlmod/runfiles/runfiles_test.py
index 3c3ae75..e1ba14e 100644
--- a/examples/bzlmod/runfiles/runfiles_test.py
+++ b/examples/bzlmod/runfiles/runfiles_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import unittest
 

diff --git a/examples/bzlmod/test.py b/examples/bzlmod/test.py
index f9f0a83..b6038a7 100644
--- a/examples/bzlmod/test.py
+++ b/examples/bzlmod/test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import unittest
 
 from __init__ import main

diff --git a/examples/multi_python_versions/libs/my_lib/__init__.py b/examples/multi_python_versions/libs/my_lib/__init__.py
index 3f02b96..33cfb41 100644
--- a/examples/multi_python_versions/libs/my_lib/__init__.py
+++ b/examples/multi_python_versions/libs/my_lib/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import websockets
 
 

diff --git a/examples/multi_python_versions/tests/cross_version_test.py b/examples/multi_python_versions/tests/cross_version_test.py
index f933ed6..437be2e 100644
--- a/examples/multi_python_versions/tests/cross_version_test.py
+++ b/examples/multi_python_versions/tests/cross_version_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import subprocess
 import sys

diff --git a/examples/multi_python_versions/tests/my_lib_test.py b/examples/multi_python_versions/tests/my_lib_test.py
index 4fc7095..e0a97db 100644
--- a/examples/multi_python_versions/tests/my_lib_test.py
+++ b/examples/multi_python_versions/tests/my_lib_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import sys
 

diff --git a/examples/multi_python_versions/tests/version.py b/examples/multi_python_versions/tests/version.py
index 1007a14..2d293c1 100644
--- a/examples/multi_python_versions/tests/version.py
+++ b/examples/multi_python_versions/tests/version.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import sys
 
 print(f"{sys.version_info.major}.{sys.version_info.minor}")

diff --git a/examples/multi_python_versions/tests/version_test.py b/examples/multi_python_versions/tests/version_test.py
index 305773c..444f5e4 100644
--- a/examples/multi_python_versions/tests/version_test.py
+++ b/examples/multi_python_versions/tests/version_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import sys
 

diff --git a/examples/multi_python_versions/tests/version_test.sh b/examples/multi_python_versions/tests/version_test.sh
index b8f510d..3bedb95 100755
--- a/examples/multi_python_versions/tests/version_test.sh
+++ b/examples/multi_python_versions/tests/version_test.sh

@@ -1,4 +1,18 @@
 #!/usr/bin/env bash
+# Copyright 2023 The Bazel 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.
+
 
 set -o errexit -o nounset -o pipefail
 

diff --git a/examples/pip_install/main.py b/examples/pip_install/main.py
index b65ad0e..1fb7249 100644
--- a/examples/pip_install/main.py
+++ b/examples/pip_install/main.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import boto3
 
 

diff --git a/examples/pip_install/pip_install_test.py b/examples/pip_install/pip_install_test.py
index 1746b5d..3e1b085 100644
--- a/examples/pip_install/pip_install_test.py
+++ b/examples/pip_install/pip_install_test.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+# Copyright 2023 The Bazel 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.
+
 
 import os
 import subprocess

diff --git a/examples/pip_install/test.py b/examples/pip_install/test.py
index 0859a28..0f5b7c9 100644
--- a/examples/pip_install/test.py
+++ b/examples/pip_install/test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import unittest
 
 import main

diff --git a/examples/pip_parse/main.py b/examples/pip_parse/main.py
index 79e1c12..80610f4 100644
--- a/examples/pip_parse/main.py
+++ b/examples/pip_parse/main.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import requests
 
 

diff --git a/examples/pip_parse/pip_parse_test.py b/examples/pip_parse/pip_parse_test.py
index c623a47..f319cb8 100644
--- a/examples/pip_parse/pip_parse_test.py
+++ b/examples/pip_parse/pip_parse_test.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+# Copyright 2023 The Bazel 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.
+
 
 import os
 import subprocess

diff --git a/examples/pip_parse/test.py b/examples/pip_parse/test.py
index e1f97f1..2dc3046 100644
--- a/examples/pip_parse/test.py
+++ b/examples/pip_parse/test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import unittest
 
 import main

diff --git a/examples/pip_repository_annotations/data/copy_executable.py b/examples/pip_repository_annotations/data/copy_executable.py
index 20c6651..5cb1af7 100755
--- a/examples/pip_repository_annotations/data/copy_executable.py
+++ b/examples/pip_repository_annotations/data/copy_executable.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python
+# Copyright 2023 The Bazel 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.
+
 
 if __name__ == "__main__":
     print("Hello world from copied executable")

diff --git a/examples/pip_repository_annotations/pip_repository_annotations_test.py b/examples/pip_repository_annotations/pip_repository_annotations_test.py
index b49fd34..e41dd4f 100644
--- a/examples/pip_repository_annotations/pip_repository_annotations_test.py
+++ b/examples/pip_repository_annotations/pip_repository_annotations_test.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+# Copyright 2023 The Bazel 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.
+
 
 import os
 import platform

diff --git a/examples/wheel/private/directory_writer.py b/examples/wheel/private/directory_writer.py
index dd604c6..7d9a93e 100644
--- a/examples/wheel/private/directory_writer.py
+++ b/examples/wheel/private/directory_writer.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+# Copyright 2023 The Bazel 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.
+
 """The action executable of the `@rules_python//examples/wheel/private:wheel_utils.bzl%directory_writer` rule."""
 
 import argparse

diff --git a/examples/wheel/private/wheel_utils.bzl b/examples/wheel/private/wheel_utils.bzl
index 25ef9b4..af4fa19 100644
--- a/examples/wheel/private/wheel_utils.bzl
+++ b/examples/wheel/private/wheel_utils.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Helper rules for demonstrating `py_wheel` examples"""
 
 def _directory_writer_impl(ctx):

diff --git a/gazelle/def.bzl b/gazelle/def.bzl
index bb53c30..80b1157 100644
--- a/gazelle/def.bzl
+++ b/gazelle/def.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """This module contains the Gazelle runtime dependencies for the Python extension.
 """
 

diff --git a/gazelle/deps.bzl b/gazelle/deps.bzl
index 15150c9..9ecb0c3 100644
--- a/gazelle/deps.bzl
+++ b/gazelle/deps.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "This file managed by `bazel run //:update_go_deps`"
 
 load("@bazel_gazelle//:deps.bzl", _go_repository = "go_repository")

diff --git a/gazelle/manifest/defs.bzl b/gazelle/manifest/defs.bzl
index 3bbcf99..8540c0e 100644
--- a/gazelle/manifest/defs.bzl
+++ b/gazelle/manifest/defs.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """This module provides the gazelle_python_manifest macro that contains targets
 for updating and testing the Gazelle manifest file.
 """

diff --git a/gazelle/manifest/generate/generate.go b/gazelle/manifest/generate/generate.go
index 7c2e064..0f429f8 100644
--- a/gazelle/manifest/generate/generate.go
+++ b/gazelle/manifest/generate/generate.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 /*
 generate.go is a program that generates the Gazelle YAML manifest.
 

diff --git a/gazelle/manifest/hasher/main.go b/gazelle/manifest/hasher/main.go
index 6e88335..61f8952 100644
--- a/gazelle/manifest/hasher/main.go
+++ b/gazelle/manifest/hasher/main.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package main
 
 import (

diff --git a/gazelle/manifest/manifest.go b/gazelle/manifest/manifest.go
index 5668d9c..bb48264 100644
--- a/gazelle/manifest/manifest.go
+++ b/gazelle/manifest/manifest.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package manifest
 
 import (

diff --git a/gazelle/manifest/manifest_test.go b/gazelle/manifest/manifest_test.go
index d3873e3..43c4099 100644
--- a/gazelle/manifest/manifest_test.go
+++ b/gazelle/manifest/manifest_test.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package manifest_test
 
 import (

diff --git a/gazelle/manifest/test/run.sh b/gazelle/manifest/test/run.sh
index 524e9b5..95efef0 100755
--- a/gazelle/manifest/test/run.sh
+++ b/gazelle/manifest/test/run.sh

@@ -1,4 +1,18 @@
 #!/usr/bin/env bash
+# Copyright 2023 The Bazel 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.
+
 
 # This file exists to allow passing the runfile paths to the Go program via
 # environment variables.

diff --git a/gazelle/manifest/test/test.go b/gazelle/manifest/test/test.go
index 207923c..ae9fdfe 100644
--- a/gazelle/manifest/test/test.go
+++ b/gazelle/manifest/test/test.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 /*
 test.go is a program that asserts the Gazelle YAML manifest is up-to-date in
 regards to the requirements.txt.

diff --git a/gazelle/modules_mapping/def.bzl b/gazelle/modules_mapping/def.bzl
index 8cffb31..54fc8ad 100644
--- a/gazelle/modules_mapping/def.bzl
+++ b/gazelle/modules_mapping/def.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Definitions for the modules_mapping.json generation.
 
 The modules_mapping.json file is a mapping from Python modules to the wheel

diff --git a/gazelle/modules_mapping/generator.py b/gazelle/modules_mapping/generator.py
index 51b81e7..be57eac 100644
--- a/gazelle/modules_mapping/generator.py
+++ b/gazelle/modules_mapping/generator.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import argparse
 import json
 import pathlib

diff --git a/gazelle/python/configure.go b/gazelle/python/configure.go
index 8e71110..901c226 100644
--- a/gazelle/python/configure.go
+++ b/gazelle/python/configure.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/fix.go b/gazelle/python/fix.go
index c669f21..1ca4257 100644
--- a/gazelle/python/fix.go
+++ b/gazelle/python/fix.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/generate.go b/gazelle/python/generate.go
index a158799..4ebb40f 100644
--- a/gazelle/python/generate.go
+++ b/gazelle/python/generate.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/kinds.go b/gazelle/python/kinds.go
index fa0f4ed..0fdc6bc 100644
--- a/gazelle/python/kinds.go
+++ b/gazelle/python/kinds.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/language.go b/gazelle/python/language.go
index 877ac6d..56eb97b 100644
--- a/gazelle/python/language.go
+++ b/gazelle/python/language.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/parse.py b/gazelle/python/parse.py
index b892229..5cf0b89 100644
--- a/gazelle/python/parse.py
+++ b/gazelle/python/parse.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # parse.py is a long-living program that communicates over STDIN and STDOUT.
 # STDIN receives parse requests, one per line. It outputs the parsed modules and
 # comments from all the files from each request.

diff --git a/gazelle/python/parser.go b/gazelle/python/parser.go
index fdb34f7..3809a46 100644
--- a/gazelle/python/parser.go
+++ b/gazelle/python/parser.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/resolve.go b/gazelle/python/resolve.go
index 220876d..607776a 100644
--- a/gazelle/python/resolve.go
+++ b/gazelle/python/resolve.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/std_modules.go b/gazelle/python/std_modules.go
index 5f4df63..17bc526 100644
--- a/gazelle/python/std_modules.go
+++ b/gazelle/python/std_modules.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/std_modules.py b/gazelle/python/std_modules.py
index 86a2077..779a325 100644
--- a/gazelle/python/std_modules.py
+++ b/gazelle/python/std_modules.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # std_modules.py is a long-living program that communicates over STDIN and
 # STDOUT. STDIN receives module names, one per line. For each module statement
 # it evaluates, it outputs true/false for whether the module is part of the

diff --git a/gazelle/python/target.go b/gazelle/python/target.go
index 84bbe29..69711ce 100644
--- a/gazelle/python/target.go
+++ b/gazelle/python/target.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package python
 
 import (

diff --git a/gazelle/python/testdata/dependency_resolution_order/__init__.py b/gazelle/python/testdata/dependency_resolution_order/__init__.py
index f2a1c08..d9c6504 100644
--- a/gazelle/python/testdata/dependency_resolution_order/__init__.py
+++ b/gazelle/python/testdata/dependency_resolution_order/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import sys
 
 import bar

diff --git a/gazelle/python/testdata/dependency_resolution_order/bar/__init__.py b/gazelle/python/testdata/dependency_resolution_order/bar/__init__.py
index 76c3313..1c0275c 100644
--- a/gazelle/python/testdata/dependency_resolution_order/bar/__init__.py
+++ b/gazelle/python/testdata/dependency_resolution_order/bar/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 _ = os

diff --git a/gazelle/python/testdata/dependency_resolution_order/baz/__init__.py b/gazelle/python/testdata/dependency_resolution_order/baz/__init__.py
index 76c3313..1c0275c 100644
--- a/gazelle/python/testdata/dependency_resolution_order/baz/__init__.py
+++ b/gazelle/python/testdata/dependency_resolution_order/baz/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 _ = os

diff --git a/gazelle/python/testdata/dependency_resolution_order/foo/__init__.py b/gazelle/python/testdata/dependency_resolution_order/foo/__init__.py
index 76c3313..1c0275c 100644
--- a/gazelle/python/testdata/dependency_resolution_order/foo/__init__.py
+++ b/gazelle/python/testdata/dependency_resolution_order/foo/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 _ = os

diff --git a/gazelle/python/testdata/dependency_resolution_order/gazelle_python.yaml b/gazelle/python/testdata/dependency_resolution_order/gazelle_python.yaml
index 7e911bf..8615181 100644
--- a/gazelle/python/testdata/dependency_resolution_order/gazelle_python.yaml
+++ b/gazelle/python/testdata/dependency_resolution_order/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     foo: some_foo

diff --git a/gazelle/python/testdata/dependency_resolution_order/somewhere/bar/__init__.py b/gazelle/python/testdata/dependency_resolution_order/somewhere/bar/__init__.py
index 76c3313..1c0275c 100644
--- a/gazelle/python/testdata/dependency_resolution_order/somewhere/bar/__init__.py
+++ b/gazelle/python/testdata/dependency_resolution_order/somewhere/bar/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 _ = os

diff --git a/gazelle/python/testdata/dependency_resolution_order/test.yaml b/gazelle/python/testdata/dependency_resolution_order/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/dependency_resolution_order/test.yaml
+++ b/gazelle/python/testdata/dependency_resolution_order/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/disable_import_statements_validation/__init__.py b/gazelle/python/testdata/disable_import_statements_validation/__init__.py
index 88eba74..fde6e50 100644
--- a/gazelle/python/testdata/disable_import_statements_validation/__init__.py
+++ b/gazelle/python/testdata/disable_import_statements_validation/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import abcdefg
 
 _ = abcdefg

diff --git a/gazelle/python/testdata/disable_import_statements_validation/test.yaml b/gazelle/python/testdata/disable_import_statements_validation/test.yaml
index 36dd656..2410223 100644
--- a/gazelle/python/testdata/disable_import_statements_validation/test.yaml
+++ b/gazelle/python/testdata/disable_import_statements_validation/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 0

diff --git a/gazelle/python/testdata/dont_rename_target/__init__.py b/gazelle/python/testdata/dont_rename_target/__init__.py
index e69de29..bbdfb4c 100644
--- a/gazelle/python/testdata/dont_rename_target/__init__.py
+++ b/gazelle/python/testdata/dont_rename_target/__init__.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/gazelle/python/testdata/dont_rename_target/test.yaml b/gazelle/python/testdata/dont_rename_target/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/dont_rename_target/test.yaml
+++ b/gazelle/python/testdata/dont_rename_target/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/file_name_matches_import_statement/__init__.py b/gazelle/python/testdata/file_name_matches_import_statement/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/file_name_matches_import_statement/__init__.py
+++ b/gazelle/python/testdata/file_name_matches_import_statement/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/file_name_matches_import_statement/gazelle_python.yaml b/gazelle/python/testdata/file_name_matches_import_statement/gazelle_python.yaml
index 63e6966..f50d3ae 100644
--- a/gazelle/python/testdata/file_name_matches_import_statement/gazelle_python.yaml
+++ b/gazelle/python/testdata/file_name_matches_import_statement/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     rest_framework: djangorestframework

diff --git a/gazelle/python/testdata/file_name_matches_import_statement/rest_framework.py b/gazelle/python/testdata/file_name_matches_import_statement/rest_framework.py
index 9bede69..43098d2 100644
--- a/gazelle/python/testdata/file_name_matches_import_statement/rest_framework.py
+++ b/gazelle/python/testdata/file_name_matches_import_statement/rest_framework.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import rest_framework
 
 _ = rest_framework

diff --git a/gazelle/python/testdata/file_name_matches_import_statement/test.yaml b/gazelle/python/testdata/file_name_matches_import_statement/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/file_name_matches_import_statement/test.yaml
+++ b/gazelle/python/testdata/file_name_matches_import_statement/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/first_party_dependencies/one/__main__.py b/gazelle/python/testdata/first_party_dependencies/one/__main__.py
index 2d241cc..efc7900 100644
--- a/gazelle/python/testdata/first_party_dependencies/one/__main__.py
+++ b/gazelle/python/testdata/first_party_dependencies/one/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 from bar import bar

diff --git a/gazelle/python/testdata/first_party_dependencies/one/bar/__init__.py b/gazelle/python/testdata/first_party_dependencies/one/bar/__init__.py
index e311ff1..d4b5fb8 100644
--- a/gazelle/python/testdata/first_party_dependencies/one/bar/__init__.py
+++ b/gazelle/python/testdata/first_party_dependencies/one/bar/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/first_party_dependencies/one/bar/baz/__init__.py b/gazelle/python/testdata/first_party_dependencies/one/bar/baz/__init__.py
index e74f519..5be74a7 100644
--- a/gazelle/python/testdata/first_party_dependencies/one/bar/baz/__init__.py
+++ b/gazelle/python/testdata/first_party_dependencies/one/bar/baz/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/first_party_dependencies/one/foo/__init__.py b/gazelle/python/testdata/first_party_dependencies/one/foo/__init__.py
index 8aeca3d..978fb74 100644
--- a/gazelle/python/testdata/first_party_dependencies/one/foo/__init__.py
+++ b/gazelle/python/testdata/first_party_dependencies/one/foo/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/first_party_dependencies/test.yaml b/gazelle/python/testdata/first_party_dependencies/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/first_party_dependencies/test.yaml
+++ b/gazelle/python/testdata/first_party_dependencies/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/first_party_dependencies/three/__init__.py b/gazelle/python/testdata/first_party_dependencies/three/__init__.py
index 41bec88..9f7d123 100644
--- a/gazelle/python/testdata/first_party_dependencies/three/__init__.py
+++ b/gazelle/python/testdata/first_party_dependencies/three/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 from bar import bar

diff --git a/gazelle/python/testdata/first_party_dependencies/two/__init__.py b/gazelle/python/testdata/first_party_dependencies/two/__init__.py
index a0bb5c8..88ff57b 100644
--- a/gazelle/python/testdata/first_party_dependencies/two/__init__.py
+++ b/gazelle/python/testdata/first_party_dependencies/two/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 from foo import foo

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/__main__.py b/gazelle/python/testdata/first_party_file_and_directory_modules/__main__.py
index acf5f10..242448d 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/__main__.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import foo
 from baz import baz as another_baz
 from foo.bar import baz

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/baz.py b/gazelle/python/testdata/first_party_file_and_directory_modules/baz.py
index b161d6a..e03a9ec 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/baz.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/baz.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def baz():
     return "baz from baz.py"

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/foo.py b/gazelle/python/testdata/first_party_file_and_directory_modules/foo.py
index af3cbda..04474d8 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/foo.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/foo.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def foo():
     print("foo")

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/foo/__init__.py b/gazelle/python/testdata/first_party_file_and_directory_modules/foo/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/foo/__init__.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/foo/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/foo/bar.py b/gazelle/python/testdata/first_party_file_and_directory_modules/foo/bar.py
index d6524cc..dacf2d4 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/foo/bar.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/foo/bar.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import one.two as two
 
 _ = two

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/one/__init__.py b/gazelle/python/testdata/first_party_file_and_directory_modules/one/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/one/__init__.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/one/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/one/two.py b/gazelle/python/testdata/first_party_file_and_directory_modules/one/two.py
index 0020c44..94cca3d 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/one/two.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/one/two.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def two():
     return "two"

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/test.yaml b/gazelle/python/testdata/first_party_file_and_directory_modules/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/test.yaml
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/__init__.py b/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/__init__.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/module1.py b/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/module1.py
index 0ff1c42..76c7227 100644
--- a/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/module1.py
+++ b/gazelle/python/testdata/first_party_file_and_directory_modules/undiscoverable/package1/subpackage1/module1.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def find_me():
     return "found"

diff --git a/gazelle/python/testdata/from_imports/foo/__init__.py b/gazelle/python/testdata/from_imports/foo/__init__.py
index 8c4ff6a..d0f74a8 100644
--- a/gazelle/python/testdata/from_imports/foo/__init__.py
+++ b/gazelle/python/testdata/from_imports/foo/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 foo = "foo"

diff --git a/gazelle/python/testdata/from_imports/foo/bar/__init__.py b/gazelle/python/testdata/from_imports/foo/bar/__init__.py
index 2e96e09..240f382 100644
--- a/gazelle/python/testdata/from_imports/foo/bar/__init__.py
+++ b/gazelle/python/testdata/from_imports/foo/bar/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 bar = "bar"

diff --git a/gazelle/python/testdata/from_imports/foo/bar/baz.py b/gazelle/python/testdata/from_imports/foo/bar/baz.py
index a15f053..9aeae61 100644
--- a/gazelle/python/testdata/from_imports/foo/bar/baz.py
+++ b/gazelle/python/testdata/from_imports/foo/bar/baz.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 baz = "baz"

diff --git a/gazelle/python/testdata/from_imports/gazelle_python.yaml b/gazelle/python/testdata/from_imports/gazelle_python.yaml
index 5f7922f..132854e 100644
--- a/gazelle/python/testdata/from_imports/gazelle_python.yaml
+++ b/gazelle/python/testdata/from_imports/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: rootboto3

diff --git a/gazelle/python/testdata/from_imports/import_from_init_py/__init__.py b/gazelle/python/testdata/from_imports/import_from_init_py/__init__.py
index 350a327..bd6d8a5 100644
--- a/gazelle/python/testdata/from_imports/import_from_init_py/__init__.py
+++ b/gazelle/python/testdata/from_imports/import_from_init_py/__init__.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 # bar is a variable inside foo/bar/__init__.py
 from foo.bar import bar

diff --git a/gazelle/python/testdata/from_imports/import_from_multiple/__init__.py b/gazelle/python/testdata/from_imports/import_from_multiple/__init__.py
index 864059b..05cd104 100644
--- a/gazelle/python/testdata/from_imports/import_from_multiple/__init__.py
+++ b/gazelle/python/testdata/from_imports/import_from_multiple/__init__.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 # Import multiple values from the same import.
 from foo.bar import bar, baz

diff --git a/gazelle/python/testdata/from_imports/import_nested_file/__init__.py b/gazelle/python/testdata/from_imports/import_nested_file/__init__.py
index d5e6b25..55a1621 100644
--- a/gazelle/python/testdata/from_imports/import_nested_file/__init__.py
+++ b/gazelle/python/testdata/from_imports/import_nested_file/__init__.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 # baz.py is a file at foo/bar/baz.py
 from foo.bar import baz

diff --git a/gazelle/python/testdata/from_imports/import_nested_module/__init__.py b/gazelle/python/testdata/from_imports/import_nested_module/__init__.py
index 3b04f00..96fa0e5 100644
--- a/gazelle/python/testdata/from_imports/import_nested_module/__init__.py
+++ b/gazelle/python/testdata/from_imports/import_nested_module/__init__.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 # bar is a module at foo/bar/__init__.py
 from foo import bar

diff --git a/gazelle/python/testdata/from_imports/import_nested_var/__init__.py b/gazelle/python/testdata/from_imports/import_nested_var/__init__.py
index de5069d..d0f51c4 100644
--- a/gazelle/python/testdata/from_imports/import_nested_var/__init__.py
+++ b/gazelle/python/testdata/from_imports/import_nested_var/__init__.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 # baz is a variable in foo/bar/baz.py
 from foo.bar.baz import baz

diff --git a/gazelle/python/testdata/from_imports/import_top_level_var/__init__.py b/gazelle/python/testdata/from_imports/import_top_level_var/__init__.py
index 532f11a..71dd7c4 100644
--- a/gazelle/python/testdata/from_imports/import_top_level_var/__init__.py
+++ b/gazelle/python/testdata/from_imports/import_top_level_var/__init__.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 # foo is a variable in foo/__init__.py
 from foo import foo

diff --git a/gazelle/python/testdata/from_imports/std_module/__init__.py b/gazelle/python/testdata/from_imports/std_module/__init__.py
index 7e6bc9d..5518cc0 100644
--- a/gazelle/python/testdata/from_imports/std_module/__init__.py
+++ b/gazelle/python/testdata/from_imports/std_module/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # Gazelle should recognize this from import
 # as the standard module __future__.
 from __future__ import print_function

diff --git a/gazelle/python/testdata/from_imports/test.yaml b/gazelle/python/testdata/from_imports/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/from_imports/test.yaml
+++ b/gazelle/python/testdata/from_imports/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/generated_test_entrypoint/__init__.py b/gazelle/python/testdata/generated_test_entrypoint/__init__.py
index 6a49193..b274b0d 100644
--- a/gazelle/python/testdata/generated_test_entrypoint/__init__.py
+++ b/gazelle/python/testdata/generated_test_entrypoint/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 foo import foo
 
 _ = foo

diff --git a/gazelle/python/testdata/generated_test_entrypoint/foo.py b/gazelle/python/testdata/generated_test_entrypoint/foo.py
index cf68624..932de45 100644
--- a/gazelle/python/testdata/generated_test_entrypoint/foo.py
+++ b/gazelle/python/testdata/generated_test_entrypoint/foo.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def foo():
     return "foo"

diff --git a/gazelle/python/testdata/generated_test_entrypoint/test.yaml b/gazelle/python/testdata/generated_test_entrypoint/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/generated_test_entrypoint/test.yaml
+++ b/gazelle/python/testdata/generated_test_entrypoint/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/ignored_invalid_imported_module/__init__.py b/gazelle/python/testdata/ignored_invalid_imported_module/__init__.py
index 4301453..a094ed0 100644
--- a/gazelle/python/testdata/ignored_invalid_imported_module/__init__.py
+++ b/gazelle/python/testdata/ignored_invalid_imported_module/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 # gazelle:ignore abcdefg1,abcdefg2
 # gazelle:ignore abcdefg3
 

diff --git a/gazelle/python/testdata/ignored_invalid_imported_module/gazelle_python.yaml b/gazelle/python/testdata/ignored_invalid_imported_module/gazelle_python.yaml
index 54b3148..4b12372 100644
--- a/gazelle/python/testdata/ignored_invalid_imported_module/gazelle_python.yaml
+++ b/gazelle/python/testdata/ignored_invalid_imported_module/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     foo: foo

diff --git a/gazelle/python/testdata/ignored_invalid_imported_module/test.yaml b/gazelle/python/testdata/ignored_invalid_imported_module/test.yaml
index 36dd656..2410223 100644
--- a/gazelle/python/testdata/ignored_invalid_imported_module/test.yaml
+++ b/gazelle/python/testdata/ignored_invalid_imported_module/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 0

diff --git a/gazelle/python/testdata/invalid_annotation/__init__.py b/gazelle/python/testdata/invalid_annotation/__init__.py
index 9968c4a..7aee876 100644
--- a/gazelle/python/testdata/invalid_annotation/__init__.py
+++ b/gazelle/python/testdata/invalid_annotation/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # gazelle:ignore

diff --git a/gazelle/python/testdata/invalid_annotation/test.yaml b/gazelle/python/testdata/invalid_annotation/test.yaml
index 5e6170b..19924b1 100644
--- a/gazelle/python/testdata/invalid_annotation/test.yaml
+++ b/gazelle/python/testdata/invalid_annotation/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 1

diff --git a/gazelle/python/testdata/invalid_imported_module/__init__.py b/gazelle/python/testdata/invalid_imported_module/__init__.py
index c100931..dc6fb85 100644
--- a/gazelle/python/testdata/invalid_imported_module/__init__.py
+++ b/gazelle/python/testdata/invalid_imported_module/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 try:
     import grpc
 

diff --git a/gazelle/python/testdata/invalid_imported_module/test.yaml b/gazelle/python/testdata/invalid_imported_module/test.yaml
index f12c36b..6bcea39 100644
--- a/gazelle/python/testdata/invalid_imported_module/test.yaml
+++ b/gazelle/python/testdata/invalid_imported_module/test.yaml

@@ -1,8 +1,22 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 1
   stderr: |
-    gazelle: ERROR: failed to validate dependencies for target "//:invalid_imported_module": "grpc" at line 2 from "__init__.py" is an invalid dependency: possible solutions:
+    gazelle: ERROR: failed to validate dependencies for target "//:invalid_imported_module": "grpc" at line 16 from "__init__.py" is an invalid dependency: possible solutions:
     	1. Add it as a dependency in the requirements.txt file.
     	2. Instruct Gazelle to resolve to a known dependency using the gazelle:resolve directive.
     	3. Ignore it with a comment '# gazelle:ignore grpc' in the Python file.

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/__init__.py b/gazelle/python/testdata/monorepo/coarse_grained/__init__.py
index 2b5b044..6e77327 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/__init__.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import boto3

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/_boundary/__init__.py b/gazelle/python/testdata/monorepo/coarse_grained/_boundary/__init__.py
index e69de29..bbdfb4c 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/_boundary/__init__.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/_boundary/__init__.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/bar/__init__.py b/gazelle/python/testdata/monorepo/coarse_grained/bar/__init__.py
index f6ec214..499a090 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/bar/__init__.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/bar/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import boto3

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/__init__.py b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/__init__.py
index e74f519..5be74a7 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/__init__.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/first_excluded.py b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/first_excluded.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/first_excluded.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/first_excluded.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/hue.py b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/hue.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/hue.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/hue.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/second_excluded.py b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/second_excluded.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/second_excluded.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/bar/baz/second_excluded.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/monorepo/coarse_grained/foo/__init__.py b/gazelle/python/testdata/monorepo/coarse_grained/foo/__init__.py
index 8aeca3d..978fb74 100644
--- a/gazelle/python/testdata/monorepo/coarse_grained/foo/__init__.py
+++ b/gazelle/python/testdata/monorepo/coarse_grained/foo/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/monorepo/gazelle_python.yaml b/gazelle/python/testdata/monorepo/gazelle_python.yaml
index 5f7922f..132854e 100644
--- a/gazelle/python/testdata/monorepo/gazelle_python.yaml
+++ b/gazelle/python/testdata/monorepo/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: rootboto3

diff --git a/gazelle/python/testdata/monorepo/one/__main__.py b/gazelle/python/testdata/monorepo/one/__main__.py
index f08f5e8..7ef50cc 100644
--- a/gazelle/python/testdata/monorepo/one/__main__.py
+++ b/gazelle/python/testdata/monorepo/one/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import boto3

diff --git a/gazelle/python/testdata/monorepo/one/bar/__init__.py b/gazelle/python/testdata/monorepo/one/bar/__init__.py
index f6ec214..499a090 100644
--- a/gazelle/python/testdata/monorepo/one/bar/__init__.py
+++ b/gazelle/python/testdata/monorepo/one/bar/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import boto3

diff --git a/gazelle/python/testdata/monorepo/one/bar/baz/__init__.py b/gazelle/python/testdata/monorepo/one/bar/baz/__init__.py
index e74f519..5be74a7 100644
--- a/gazelle/python/testdata/monorepo/one/bar/baz/__init__.py
+++ b/gazelle/python/testdata/monorepo/one/bar/baz/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/monorepo/one/foo/__init__.py b/gazelle/python/testdata/monorepo/one/foo/__init__.py
index 8aeca3d..978fb74 100644
--- a/gazelle/python/testdata/monorepo/one/foo/__init__.py
+++ b/gazelle/python/testdata/monorepo/one/foo/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/monorepo/one/gazelle_python.yaml b/gazelle/python/testdata/monorepo/one/gazelle_python.yaml
index 67c5345..6b323b7 100644
--- a/gazelle/python/testdata/monorepo/one/gazelle_python.yaml
+++ b/gazelle/python/testdata/monorepo/one/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: oneboto3

diff --git a/gazelle/python/testdata/monorepo/test.yaml b/gazelle/python/testdata/monorepo/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/monorepo/test.yaml
+++ b/gazelle/python/testdata/monorepo/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/monorepo/three/__init__.py b/gazelle/python/testdata/monorepo/three/__init__.py
index 6f12bd8..b324b0c 100644
--- a/gazelle/python/testdata/monorepo/three/__init__.py
+++ b/gazelle/python/testdata/monorepo/three/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import bar.baz.hue as hue

diff --git a/gazelle/python/testdata/monorepo/three/gazelle_python.yaml b/gazelle/python/testdata/monorepo/three/gazelle_python.yaml
index 8604169..8280b38 100644
--- a/gazelle/python/testdata/monorepo/three/gazelle_python.yaml
+++ b/gazelle/python/testdata/monorepo/three/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: threeboto3

diff --git a/gazelle/python/testdata/monorepo/two/__init__.py b/gazelle/python/testdata/monorepo/two/__init__.py
index fb3e877..d080c27 100644
--- a/gazelle/python/testdata/monorepo/two/__init__.py
+++ b/gazelle/python/testdata/monorepo/two/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import boto3

diff --git a/gazelle/python/testdata/monorepo/two/gazelle_python.yaml b/gazelle/python/testdata/monorepo/two/gazelle_python.yaml
index 3bc5939..88c24d0 100644
--- a/gazelle/python/testdata/monorepo/two/gazelle_python.yaml
+++ b/gazelle/python/testdata/monorepo/two/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: twoboto3

diff --git a/gazelle/python/testdata/monorepo/wont_generate/__main__.py b/gazelle/python/testdata/monorepo/wont_generate/__main__.py
index 2d241cc..efc7900 100644
--- a/gazelle/python/testdata/monorepo/wont_generate/__main__.py
+++ b/gazelle/python/testdata/monorepo/wont_generate/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 from bar import bar

diff --git a/gazelle/python/testdata/monorepo/wont_generate/bar/__init__.py b/gazelle/python/testdata/monorepo/wont_generate/bar/__init__.py
index e311ff1..d4b5fb8 100644
--- a/gazelle/python/testdata/monorepo/wont_generate/bar/__init__.py
+++ b/gazelle/python/testdata/monorepo/wont_generate/bar/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/monorepo/wont_generate/bar/baz/__init__.py b/gazelle/python/testdata/monorepo/wont_generate/bar/baz/__init__.py
index e74f519..5be74a7 100644
--- a/gazelle/python/testdata/monorepo/wont_generate/bar/baz/__init__.py
+++ b/gazelle/python/testdata/monorepo/wont_generate/bar/baz/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/monorepo/wont_generate/foo/__init__.py b/gazelle/python/testdata/monorepo/wont_generate/foo/__init__.py
index 8aeca3d..978fb74 100644
--- a/gazelle/python/testdata/monorepo/wont_generate/foo/__init__.py
+++ b/gazelle/python/testdata/monorepo/wont_generate/foo/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 

diff --git a/gazelle/python/testdata/naming_convention/__init__.py b/gazelle/python/testdata/naming_convention/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/__init__.py
+++ b/gazelle/python/testdata/naming_convention/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/__main__.py b/gazelle/python/testdata/naming_convention/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/__main__.py
+++ b/gazelle/python/testdata/naming_convention/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/__test__.py b/gazelle/python/testdata/naming_convention/__test__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/__test__.py
+++ b/gazelle/python/testdata/naming_convention/__test__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/dont_rename/__init__.py b/gazelle/python/testdata/naming_convention/dont_rename/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/dont_rename/__init__.py
+++ b/gazelle/python/testdata/naming_convention/dont_rename/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/dont_rename/__main__.py b/gazelle/python/testdata/naming_convention/dont_rename/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/dont_rename/__main__.py
+++ b/gazelle/python/testdata/naming_convention/dont_rename/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/dont_rename/__test__.py b/gazelle/python/testdata/naming_convention/dont_rename/__test__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/dont_rename/__test__.py
+++ b/gazelle/python/testdata/naming_convention/dont_rename/__test__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/resolve_conflict/__init__.py b/gazelle/python/testdata/naming_convention/resolve_conflict/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/resolve_conflict/__init__.py
+++ b/gazelle/python/testdata/naming_convention/resolve_conflict/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/resolve_conflict/__main__.py b/gazelle/python/testdata/naming_convention/resolve_conflict/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/resolve_conflict/__main__.py
+++ b/gazelle/python/testdata/naming_convention/resolve_conflict/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/resolve_conflict/__test__.py b/gazelle/python/testdata/naming_convention/resolve_conflict/__test__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention/resolve_conflict/__test__.py
+++ b/gazelle/python/testdata/naming_convention/resolve_conflict/__test__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention/test.yaml b/gazelle/python/testdata/naming_convention/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/naming_convention/test.yaml
+++ b/gazelle/python/testdata/naming_convention/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/naming_convention_binary_fail/__main__.py b/gazelle/python/testdata/naming_convention_binary_fail/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention_binary_fail/__main__.py
+++ b/gazelle/python/testdata/naming_convention_binary_fail/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention_binary_fail/test.yaml b/gazelle/python/testdata/naming_convention_binary_fail/test.yaml
index bc30dd0..41eabbf 100644
--- a/gazelle/python/testdata/naming_convention_binary_fail/test.yaml
+++ b/gazelle/python/testdata/naming_convention_binary_fail/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 1

diff --git a/gazelle/python/testdata/naming_convention_library_fail/__init__.py b/gazelle/python/testdata/naming_convention_library_fail/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention_library_fail/__init__.py
+++ b/gazelle/python/testdata/naming_convention_library_fail/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention_library_fail/test.yaml b/gazelle/python/testdata/naming_convention_library_fail/test.yaml
index 3743c32..f48aa39 100644
--- a/gazelle/python/testdata/naming_convention_library_fail/test.yaml
+++ b/gazelle/python/testdata/naming_convention_library_fail/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 1

diff --git a/gazelle/python/testdata/naming_convention_test_fail/__test__.py b/gazelle/python/testdata/naming_convention_test_fail/__test__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/naming_convention_test_fail/__test__.py
+++ b/gazelle/python/testdata/naming_convention_test_fail/__test__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/naming_convention_test_fail/test.yaml b/gazelle/python/testdata/naming_convention_test_fail/test.yaml
index fc4e24e..a8867e5 100644
--- a/gazelle/python/testdata/naming_convention_test_fail/test.yaml
+++ b/gazelle/python/testdata/naming_convention_test_fail/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 1

diff --git a/gazelle/python/testdata/python_ignore_dependencies_directive/__init__.py b/gazelle/python/testdata/python_ignore_dependencies_directive/__init__.py
index 79935a7..9e6e25a 100644
--- a/gazelle/python/testdata/python_ignore_dependencies_directive/__init__.py
+++ b/gazelle/python/testdata/python_ignore_dependencies_directive/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import bar
 import boto3
 import foo

diff --git a/gazelle/python/testdata/python_ignore_dependencies_directive/gazelle_python.yaml b/gazelle/python/testdata/python_ignore_dependencies_directive/gazelle_python.yaml
index 7288b79..1bf594f 100644
--- a/gazelle/python/testdata/python_ignore_dependencies_directive/gazelle_python.yaml
+++ b/gazelle/python/testdata/python_ignore_dependencies_directive/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: boto3

diff --git a/gazelle/python/testdata/python_ignore_dependencies_directive/test.yaml b/gazelle/python/testdata/python_ignore_dependencies_directive/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/python_ignore_dependencies_directive/test.yaml
+++ b/gazelle/python/testdata/python_ignore_dependencies_directive/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/python_ignore_files_directive/__init__.py b/gazelle/python/testdata/python_ignore_files_directive/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/__init__.py
+++ b/gazelle/python/testdata/python_ignore_files_directive/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_ignore_files_directive/bar/baz.py b/gazelle/python/testdata/python_ignore_files_directive/bar/baz.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/bar/baz.py
+++ b/gazelle/python/testdata/python_ignore_files_directive/bar/baz.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_ignore_files_directive/bar/some_other.py b/gazelle/python/testdata/python_ignore_files_directive/bar/some_other.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/bar/some_other.py
+++ b/gazelle/python/testdata/python_ignore_files_directive/bar/some_other.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_ignore_files_directive/foo/baz.py b/gazelle/python/testdata/python_ignore_files_directive/foo/baz.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/foo/baz.py
+++ b/gazelle/python/testdata/python_ignore_files_directive/foo/baz.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_ignore_files_directive/setup.py b/gazelle/python/testdata/python_ignore_files_directive/setup.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/setup.py
+++ b/gazelle/python/testdata/python_ignore_files_directive/setup.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_ignore_files_directive/some_other.py b/gazelle/python/testdata/python_ignore_files_directive/some_other.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/some_other.py
+++ b/gazelle/python/testdata/python_ignore_files_directive/some_other.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_ignore_files_directive/test.yaml b/gazelle/python/testdata/python_ignore_files_directive/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/python_ignore_files_directive/test.yaml
+++ b/gazelle/python/testdata/python_ignore_files_directive/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/python_target_with_test_in_name/__init__.py b/gazelle/python/testdata/python_target_with_test_in_name/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_target_with_test_in_name/__init__.py
+++ b/gazelle/python/testdata/python_target_with_test_in_name/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/python_target_with_test_in_name/gazelle_python.yaml b/gazelle/python/testdata/python_target_with_test_in_name/gazelle_python.yaml
index 7288b79..1bf594f 100644
--- a/gazelle/python/testdata/python_target_with_test_in_name/gazelle_python.yaml
+++ b/gazelle/python/testdata/python_target_with_test_in_name/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: boto3

diff --git a/gazelle/python/testdata/python_target_with_test_in_name/real_test.py b/gazelle/python/testdata/python_target_with_test_in_name/real_test.py
index 57c019d..2f03211 100644
--- a/gazelle/python/testdata/python_target_with_test_in_name/real_test.py
+++ b/gazelle/python/testdata/python_target_with_test_in_name/real_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import boto3
 
 _ = boto3

diff --git a/gazelle/python/testdata/python_target_with_test_in_name/test.yaml b/gazelle/python/testdata/python_target_with_test_in_name/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/python_target_with_test_in_name/test.yaml
+++ b/gazelle/python/testdata/python_target_with_test_in_name/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/python_target_with_test_in_name/test_reality.py b/gazelle/python/testdata/python_target_with_test_in_name/test_reality.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/python_target_with_test_in_name/test_reality.py
+++ b/gazelle/python/testdata/python_target_with_test_in_name/test_reality.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/relative_imports/__main__.py b/gazelle/python/testdata/relative_imports/__main__.py
index 4fb887a..8d468bd 100644
--- a/gazelle/python/testdata/relative_imports/__main__.py
+++ b/gazelle/python/testdata/relative_imports/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 package1.module1 import function1
 from package2.module3 import function3
 

diff --git a/gazelle/python/testdata/relative_imports/package1/module1.py b/gazelle/python/testdata/relative_imports/package1/module1.py
index 69cdde2..28502f1 100644
--- a/gazelle/python/testdata/relative_imports/package1/module1.py
+++ b/gazelle/python/testdata/relative_imports/package1/module1.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 .module2 import function2
 
 

diff --git a/gazelle/python/testdata/relative_imports/package1/module2.py b/gazelle/python/testdata/relative_imports/package1/module2.py
index 1e731b4..f8893b2 100644
--- a/gazelle/python/testdata/relative_imports/package1/module2.py
+++ b/gazelle/python/testdata/relative_imports/package1/module2.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def function2():
     return "function2"

diff --git a/gazelle/python/testdata/relative_imports/package2/__init__.py b/gazelle/python/testdata/relative_imports/package2/__init__.py
index fd0384b..0f59568 100644
--- a/gazelle/python/testdata/relative_imports/package2/__init__.py
+++ b/gazelle/python/testdata/relative_imports/package2/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 class Class1:
     def method1(self):
         return "method1"

diff --git a/gazelle/python/testdata/relative_imports/package2/module3.py b/gazelle/python/testdata/relative_imports/package2/module3.py
index a5102dd..74978a0 100644
--- a/gazelle/python/testdata/relative_imports/package2/module3.py
+++ b/gazelle/python/testdata/relative_imports/package2/module3.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 Class1
 from .subpackage1.module5 import function5
 

diff --git a/gazelle/python/testdata/relative_imports/package2/module4.py b/gazelle/python/testdata/relative_imports/package2/module4.py
index 6e69699..b7509dc 100644
--- a/gazelle/python/testdata/relative_imports/package2/module4.py
+++ b/gazelle/python/testdata/relative_imports/package2/module4.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def function4():
     return "function4"

diff --git a/gazelle/python/testdata/relative_imports/package2/subpackage1/module5.py b/gazelle/python/testdata/relative_imports/package2/subpackage1/module5.py
index ac1f725..ea0b981 100644
--- a/gazelle/python/testdata/relative_imports/package2/subpackage1/module5.py
+++ b/gazelle/python/testdata/relative_imports/package2/subpackage1/module5.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 ..module4 import function4
 
 

diff --git a/gazelle/python/testdata/relative_imports/test.yaml b/gazelle/python/testdata/relative_imports/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/relative_imports/test.yaml
+++ b/gazelle/python/testdata/relative_imports/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/simple_binary/__main__.py b/gazelle/python/testdata/simple_binary/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_binary/__main__.py
+++ b/gazelle/python/testdata/simple_binary/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_binary/test.yaml b/gazelle/python/testdata/simple_binary/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/simple_binary/test.yaml
+++ b/gazelle/python/testdata/simple_binary/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/simple_binary_with_library/__init__.py b/gazelle/python/testdata/simple_binary_with_library/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_binary_with_library/__init__.py
+++ b/gazelle/python/testdata/simple_binary_with_library/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_binary_with_library/__main__.py b/gazelle/python/testdata/simple_binary_with_library/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_binary_with_library/__main__.py
+++ b/gazelle/python/testdata/simple_binary_with_library/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_binary_with_library/bar.py b/gazelle/python/testdata/simple_binary_with_library/bar.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_binary_with_library/bar.py
+++ b/gazelle/python/testdata/simple_binary_with_library/bar.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_binary_with_library/foo.py b/gazelle/python/testdata/simple_binary_with_library/foo.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_binary_with_library/foo.py
+++ b/gazelle/python/testdata/simple_binary_with_library/foo.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_binary_with_library/test.yaml b/gazelle/python/testdata/simple_binary_with_library/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/simple_binary_with_library/test.yaml
+++ b/gazelle/python/testdata/simple_binary_with_library/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/simple_library/__init__.py b/gazelle/python/testdata/simple_library/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_library/__init__.py
+++ b/gazelle/python/testdata/simple_library/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_library/test.yaml b/gazelle/python/testdata/simple_library/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/simple_library/test.yaml
+++ b/gazelle/python/testdata/simple_library/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/simple_library_without_init/foo/foo.py b/gazelle/python/testdata/simple_library_without_init/foo/foo.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/simple_library_without_init/foo/foo.py
+++ b/gazelle/python/testdata/simple_library_without_init/foo/foo.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/simple_library_without_init/test.yaml b/gazelle/python/testdata/simple_library_without_init/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/simple_library_without_init/test.yaml
+++ b/gazelle/python/testdata/simple_library_without_init/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/simple_test/__init__.py b/gazelle/python/testdata/simple_test/__init__.py
index 6a49193..b274b0d 100644
--- a/gazelle/python/testdata/simple_test/__init__.py
+++ b/gazelle/python/testdata/simple_test/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 foo import foo
 
 _ = foo

diff --git a/gazelle/python/testdata/simple_test/__test__.py b/gazelle/python/testdata/simple_test/__test__.py
index d6085a4..2b180a5 100644
--- a/gazelle/python/testdata/simple_test/__test__.py
+++ b/gazelle/python/testdata/simple_test/__test__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import unittest
 
 from __init__ import foo

diff --git a/gazelle/python/testdata/simple_test/foo.py b/gazelle/python/testdata/simple_test/foo.py
index cf68624..932de45 100644
--- a/gazelle/python/testdata/simple_test/foo.py
+++ b/gazelle/python/testdata/simple_test/foo.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def foo():
     return "foo"

diff --git a/gazelle/python/testdata/simple_test/test.yaml b/gazelle/python/testdata/simple_test/test.yaml
index 36dd656..2410223 100644
--- a/gazelle/python/testdata/simple_test/test.yaml
+++ b/gazelle/python/testdata/simple_test/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 0

diff --git a/gazelle/python/testdata/simple_test_with_conftest/__init__.py b/gazelle/python/testdata/simple_test_with_conftest/__init__.py
index 6a49193..b274b0d 100644
--- a/gazelle/python/testdata/simple_test_with_conftest/__init__.py
+++ b/gazelle/python/testdata/simple_test_with_conftest/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 foo import foo
 
 _ = foo

diff --git a/gazelle/python/testdata/simple_test_with_conftest/__test__.py b/gazelle/python/testdata/simple_test_with_conftest/__test__.py
index d6085a4..2b180a5 100644
--- a/gazelle/python/testdata/simple_test_with_conftest/__test__.py
+++ b/gazelle/python/testdata/simple_test_with_conftest/__test__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import unittest
 
 from __init__ import foo

diff --git a/gazelle/python/testdata/simple_test_with_conftest/conftest.py b/gazelle/python/testdata/simple_test_with_conftest/conftest.py
index e69de29..bbdfb4c 100644
--- a/gazelle/python/testdata/simple_test_with_conftest/conftest.py
+++ b/gazelle/python/testdata/simple_test_with_conftest/conftest.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/gazelle/python/testdata/simple_test_with_conftest/foo.py b/gazelle/python/testdata/simple_test_with_conftest/foo.py
index cf68624..932de45 100644
--- a/gazelle/python/testdata/simple_test_with_conftest/foo.py
+++ b/gazelle/python/testdata/simple_test_with_conftest/foo.py

@@ -1,2 +1,16 @@
+# Copyright 2023 The Bazel 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.
+
 def foo():
     return "foo"

diff --git a/gazelle/python/testdata/simple_test_with_conftest/test.yaml b/gazelle/python/testdata/simple_test_with_conftest/test.yaml
index 36dd656..2410223 100644
--- a/gazelle/python/testdata/simple_test_with_conftest/test.yaml
+++ b/gazelle/python/testdata/simple_test_with_conftest/test.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ---
 expect:
   exit_code: 0

diff --git a/gazelle/python/testdata/subdir_sources/__main__.py b/gazelle/python/testdata/subdir_sources/__main__.py
index 3cc8834..aacfc67 100644
--- a/gazelle/python/testdata/subdir_sources/__main__.py
+++ b/gazelle/python/testdata/subdir_sources/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import foo.bar.bar as bar
 import foo.baz.baz as baz
 import one.two.three as three

diff --git a/gazelle/python/testdata/subdir_sources/foo/__init__.py b/gazelle/python/testdata/subdir_sources/foo/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/__init__.py
+++ b/gazelle/python/testdata/subdir_sources/foo/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/bar/bar.py b/gazelle/python/testdata/subdir_sources/foo/bar/bar.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/bar/bar.py
+++ b/gazelle/python/testdata/subdir_sources/foo/bar/bar.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/baz/baz.py b/gazelle/python/testdata/subdir_sources/foo/baz/baz.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/baz/baz.py
+++ b/gazelle/python/testdata/subdir_sources/foo/baz/baz.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/foo.py b/gazelle/python/testdata/subdir_sources/foo/foo.py
index 6752f22..a98c73d 100644
--- a/gazelle/python/testdata/subdir_sources/foo/foo.py
+++ b/gazelle/python/testdata/subdir_sources/foo/foo.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import foo.bar.bar as bar
 
 _ = bar

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_build/python/my_module.py b/gazelle/python/testdata/subdir_sources/foo/has_build/python/my_module.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_build/python/my_module.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_build/python/my_module.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_build_bazel/python/my_module.py b/gazelle/python/testdata/subdir_sources/foo/has_build_bazel/python/my_module.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_build_bazel/python/my_module.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_build_bazel/python/my_module.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_init/__init__.py b/gazelle/python/testdata/subdir_sources/foo/has_init/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_init/__init__.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_init/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_init/python/my_module.py b/gazelle/python/testdata/subdir_sources/foo/has_init/python/my_module.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_init/python/my_module.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_init/python/my_module.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_main/__main__.py b/gazelle/python/testdata/subdir_sources/foo/has_main/__main__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_main/__main__.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_main/__main__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_main/python/my_module.py b/gazelle/python/testdata/subdir_sources/foo/has_main/python/my_module.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_main/python/my_module.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_main/python/my_module.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_test/__test__.py b/gazelle/python/testdata/subdir_sources/foo/has_test/__test__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_test/__test__.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_test/__test__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/foo/has_test/python/my_module.py b/gazelle/python/testdata/subdir_sources/foo/has_test/python/my_module.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/foo/has_test/python/my_module.py
+++ b/gazelle/python/testdata/subdir_sources/foo/has_test/python/my_module.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/one/__init__.py b/gazelle/python/testdata/subdir_sources/one/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/one/__init__.py
+++ b/gazelle/python/testdata/subdir_sources/one/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/one/two/__init__.py b/gazelle/python/testdata/subdir_sources/one/two/__init__.py
index b6074a1..72357b3 100644
--- a/gazelle/python/testdata/subdir_sources/one/two/__init__.py
+++ b/gazelle/python/testdata/subdir_sources/one/two/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import foo.baz.baz as baz
 import three
 

diff --git a/gazelle/python/testdata/subdir_sources/one/two/three.py b/gazelle/python/testdata/subdir_sources/one/two/three.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/subdir_sources/one/two/three.py
+++ b/gazelle/python/testdata/subdir_sources/one/two/three.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/subdir_sources/test.yaml b/gazelle/python/testdata/subdir_sources/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/subdir_sources/test.yaml
+++ b/gazelle/python/testdata/subdir_sources/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/with_nested_import_statements/__init__.py b/gazelle/python/testdata/with_nested_import_statements/__init__.py
index 6871953..733b51f 100644
--- a/gazelle/python/testdata/with_nested_import_statements/__init__.py
+++ b/gazelle/python/testdata/with_nested_import_statements/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import sys
 

diff --git a/gazelle/python/testdata/with_nested_import_statements/gazelle_python.yaml b/gazelle/python/testdata/with_nested_import_statements/gazelle_python.yaml
index 7288b79..1bf594f 100644
--- a/gazelle/python/testdata/with_nested_import_statements/gazelle_python.yaml
+++ b/gazelle/python/testdata/with_nested_import_statements/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: boto3

diff --git a/gazelle/python/testdata/with_nested_import_statements/test.yaml b/gazelle/python/testdata/with_nested_import_statements/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/with_nested_import_statements/test.yaml
+++ b/gazelle/python/testdata/with_nested_import_statements/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/with_std_requirements/__init__.py b/gazelle/python/testdata/with_std_requirements/__init__.py
index 154689a..e51d320 100644
--- a/gazelle/python/testdata/with_std_requirements/__init__.py
+++ b/gazelle/python/testdata/with_std_requirements/__init__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import sys
 

diff --git a/gazelle/python/testdata/with_std_requirements/test.yaml b/gazelle/python/testdata/with_std_requirements/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/with_std_requirements/test.yaml
+++ b/gazelle/python/testdata/with_std_requirements/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/with_third_party_requirements/__init__.py b/gazelle/python/testdata/with_third_party_requirements/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/with_third_party_requirements/__init__.py
+++ b/gazelle/python/testdata/with_third_party_requirements/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/with_third_party_requirements/__main__.py b/gazelle/python/testdata/with_third_party_requirements/__main__.py
index fe551aa..38e9a55 100644
--- a/gazelle/python/testdata/with_third_party_requirements/__main__.py
+++ b/gazelle/python/testdata/with_third_party_requirements/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import bar
 import foo
 

diff --git a/gazelle/python/testdata/with_third_party_requirements/bar.py b/gazelle/python/testdata/with_third_party_requirements/bar.py
index 19ddd97..08f2e7c 100644
--- a/gazelle/python/testdata/with_third_party_requirements/bar.py
+++ b/gazelle/python/testdata/with_third_party_requirements/bar.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 
 import bar

diff --git a/gazelle/python/testdata/with_third_party_requirements/foo.py b/gazelle/python/testdata/with_third_party_requirements/foo.py
index 29a1f3b..9bebbfc 100644
--- a/gazelle/python/testdata/with_third_party_requirements/foo.py
+++ b/gazelle/python/testdata/with_third_party_requirements/foo.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import sys
 
 import boto3

diff --git a/gazelle/python/testdata/with_third_party_requirements/gazelle_python.yaml b/gazelle/python/testdata/with_third_party_requirements/gazelle_python.yaml
index 76bb8bf..7753cff 100644
--- a/gazelle/python/testdata/with_third_party_requirements/gazelle_python.yaml
+++ b/gazelle/python/testdata/with_third_party_requirements/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     boto3: boto3

diff --git a/gazelle/python/testdata/with_third_party_requirements/test.yaml b/gazelle/python/testdata/with_third_party_requirements/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/with_third_party_requirements/test.yaml
+++ b/gazelle/python/testdata/with_third_party_requirements/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/python/testdata/with_third_party_requirements_from_imports/__init__.py b/gazelle/python/testdata/with_third_party_requirements_from_imports/__init__.py
index 6b58ff3..7307559 100644
--- a/gazelle/python/testdata/with_third_party_requirements_from_imports/__init__.py
+++ b/gazelle/python/testdata/with_third_party_requirements_from_imports/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 # For test purposes only.

diff --git a/gazelle/python/testdata/with_third_party_requirements_from_imports/__main__.py b/gazelle/python/testdata/with_third_party_requirements_from_imports/__main__.py
index 9f529cb..2062a9b 100644
--- a/gazelle/python/testdata/with_third_party_requirements_from_imports/__main__.py
+++ b/gazelle/python/testdata/with_third_party_requirements_from_imports/__main__.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 bar import main
 from google.cloud import aiplatform
 

diff --git a/gazelle/python/testdata/with_third_party_requirements_from_imports/bar.py b/gazelle/python/testdata/with_third_party_requirements_from_imports/bar.py
index 99a4b1c..6886b2b 100644
--- a/gazelle/python/testdata/with_third_party_requirements_from_imports/bar.py
+++ b/gazelle/python/testdata/with_third_party_requirements_from_imports/bar.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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 google.cloud import aiplatform, storage
 
 

diff --git a/gazelle/python/testdata/with_third_party_requirements_from_imports/gazelle_python.yaml b/gazelle/python/testdata/with_third_party_requirements_from_imports/gazelle_python.yaml
index 0e4a6d2..8b5694b 100644
--- a/gazelle/python/testdata/with_third_party_requirements_from_imports/gazelle_python.yaml
+++ b/gazelle/python/testdata/with_third_party_requirements_from_imports/gazelle_python.yaml

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 manifest:
   modules_mapping:
     cachetools: cachetools

diff --git a/gazelle/python/testdata/with_third_party_requirements_from_imports/test.yaml b/gazelle/python/testdata/with_third_party_requirements_from_imports/test.yaml
index ed97d53..fcea777 100644
--- a/gazelle/python/testdata/with_third_party_requirements_from_imports/test.yaml
+++ b/gazelle/python/testdata/with_third_party_requirements_from_imports/test.yaml

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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.
+
 ---

diff --git a/gazelle/pythonconfig/pythonconfig.go b/gazelle/pythonconfig/pythonconfig.go
index 64f6264..a2fe7d5 100644
--- a/gazelle/pythonconfig/pythonconfig.go
+++ b/gazelle/pythonconfig/pythonconfig.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package pythonconfig
 
 import (

diff --git a/gazelle/pythonconfig/types.go b/gazelle/pythonconfig/types.go
index bdb535b..d83d35f 100644
--- a/gazelle/pythonconfig/types.go
+++ b/gazelle/pythonconfig/types.go

@@ -1,3 +1,17 @@
+// Copyright 2023 The Bazel 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.
+
 package pythonconfig
 
 import (

diff --git a/internal_deps.bzl b/internal_deps.bzl
index 15a4f62..11c652a 100644
--- a/internal_deps.bzl
+++ b/internal_deps.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Dependencies that are needed for rules_python tests and tools."""
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive", "http_file")

diff --git a/python/config_settings/config_settings.bzl b/python/config_settings/config_settings.bzl
index 977d023..21e477e 100644
--- a/python/config_settings/config_settings.bzl
+++ b/python/config_settings/config_settings.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """This module is used to construct the config settings in the BUILD file in this same package.
 """
 

diff --git a/python/config_settings/transition.bzl b/python/config_settings/transition.bzl
index 35ba9a8..0a3d51c 100644
--- a/python/config_settings/transition.bzl
+++ b/python/config_settings/transition.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """The transition module contains the rule definitions to wrap py_binary and py_test and transition
 them to the desired target platform.
 """

diff --git a/python/extensions.bzl b/python/extensions.bzl
index 8b4fc0b..0c9ad07 100644
--- a/python/extensions.bzl
+++ b/python/extensions.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Module extensions for use with bzlmod"
 
 load("@rules_python//python:pip.bzl", "pip_parse")

diff --git a/python/pip_install/pip_repository.bzl b/python/pip_install/pip_repository.bzl
index 0685a88..511da34 100644
--- a/python/pip_install/pip_repository.bzl
+++ b/python/pip_install/pip_repository.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ""
 
 load("//python:repositories.bzl", "get_interpreter_dirname", "is_standalone_interpreter")

diff --git a/python/pip_install/private/pip_install_utils.bzl b/python/pip_install/private/pip_install_utils.bzl
index aaf1600..488583d 100644
--- a/python/pip_install/private/pip_install_utils.bzl
+++ b/python/pip_install/private/pip_install_utils.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Utilities for `rules_python` pip rules"""
 
 _SRCS_TEMPLATE = """\

diff --git a/python/pip_install/private/test/requirements_parser_tests.bzl b/python/pip_install/private/test/requirements_parser_tests.bzl
index 23b6745..13c40c2 100644
--- a/python/pip_install/private/test/requirements_parser_tests.bzl
+++ b/python/pip_install/private/test/requirements_parser_tests.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Unit tests for yaml.bzl"
 
 load("@bazel_skylib//lib:unittest.bzl", "asserts", "unittest")

diff --git a/python/pip_install/repositories.bzl b/python/pip_install/repositories.bzl
index 12fe940..e5567c8 100644
--- a/python/pip_install/repositories.bzl
+++ b/python/pip_install/repositories.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 ""
 
 load("@bazel_skylib//lib:versions.bzl", "versions")

diff --git a/python/pip_install/requirements.bzl b/python/pip_install/requirements.bzl
index 043edd4..32ee063 100644
--- a/python/pip_install/requirements.bzl
+++ b/python/pip_install/requirements.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Rules to verify and update pip-compile locked requirements.txt"""
 
 load("//python:defs.bzl", _py_binary = "py_binary", _py_test = "py_test")

diff --git a/python/pip_install/requirements_parser.bzl b/python/pip_install/requirements_parser.bzl
index 6200382..ac90b95 100644
--- a/python/pip_install/requirements_parser.bzl
+++ b/python/pip_install/requirements_parser.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Pip requirements parser for Starlark"
 
 _STATE = struct(

diff --git a/python/pip_install/tools/dependency_resolver/__init__.py b/python/pip_install/tools/dependency_resolver/__init__.py
index e69de29..bbdfb4c 100644
--- a/python/pip_install/tools/dependency_resolver/__init__.py
+++ b/python/pip_install/tools/dependency_resolver/__init__.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/python/pip_install/tools/dependency_resolver/dependency_resolver.py b/python/pip_install/tools/dependency_resolver/dependency_resolver.py
index 8d6cf1b..db84977 100644
--- a/python/pip_install/tools/dependency_resolver/dependency_resolver.py
+++ b/python/pip_install/tools/dependency_resolver/dependency_resolver.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Set defaults for the pip-compile command to run it under Bazel"
 
 import os

diff --git a/python/pip_install/tools/lib/__init__.py b/python/pip_install/tools/lib/__init__.py
index e69de29..bbdfb4c 100644
--- a/python/pip_install/tools/lib/__init__.py
+++ b/python/pip_install/tools/lib/__init__.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/python/pip_install/tools/lib/annotation.py b/python/pip_install/tools/lib/annotation.py
index 48aaa80..c980080 100644
--- a/python/pip_install/tools/lib/annotation.py
+++ b/python/pip_install/tools/lib/annotation.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import json
 import logging
 from collections import OrderedDict

diff --git a/python/pip_install/tools/lib/annotations_test.py b/python/pip_install/tools/lib/annotations_test.py
index e181c6d..f7c360f 100644
--- a/python/pip_install/tools/lib/annotations_test.py
+++ b/python/pip_install/tools/lib/annotations_test.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+# Copyright 2023 The Bazel 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.
+
 
 import os
 import textwrap

diff --git a/python/pip_install/tools/lib/annotations_test_helpers.bzl b/python/pip_install/tools/lib/annotations_test_helpers.bzl
index cef9aeb..4f56bb7 100644
--- a/python/pip_install/tools/lib/annotations_test_helpers.bzl
+++ b/python/pip_install/tools/lib/annotations_test_helpers.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Helper macros and rules for testing the `annotations` module of `tools`"""
 
 load("//python:pip.bzl", _package_annotation = "package_annotation")

diff --git a/python/pip_install/tools/lib/arguments.py b/python/pip_install/tools/lib/arguments.py
index 0612a94..974f03c 100644
--- a/python/pip_install/tools/lib/arguments.py
+++ b/python/pip_install/tools/lib/arguments.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import json
 from argparse import ArgumentParser
 

diff --git a/python/pip_install/tools/lib/arguments_test.py b/python/pip_install/tools/lib/arguments_test.py
index 8c546ba..dfa96a8 100644
--- a/python/pip_install/tools/lib/arguments_test.py
+++ b/python/pip_install/tools/lib/arguments_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import argparse
 import json
 import unittest

diff --git a/python/pip_install/tools/lib/bazel.py b/python/pip_install/tools/lib/bazel.py
index c0a4aec..5ee221f 100644
--- a/python/pip_install/tools/lib/bazel.py
+++ b/python/pip_install/tools/lib/bazel.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 WHEEL_FILE_LABEL = "whl"
 PY_LIBRARY_LABEL = "pkg"
 DATA_LABEL = "data"

diff --git a/python/pip_install/tools/lock_file_generator/__init__.py b/python/pip_install/tools/lock_file_generator/__init__.py
index e69de29..bbdfb4c 100644
--- a/python/pip_install/tools/lock_file_generator/__init__.py
+++ b/python/pip_install/tools/lock_file_generator/__init__.py

@@ -0,0 +1,14 @@
+# Copyright 2023 The Bazel 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.
+

diff --git a/python/pip_install/tools/lock_file_generator/lock_file_generator.py b/python/pip_install/tools/lock_file_generator/lock_file_generator.py
index 18136bf..4a64b3b 100644
--- a/python/pip_install/tools/lock_file_generator/lock_file_generator.py
+++ b/python/pip_install/tools/lock_file_generator/lock_file_generator.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import argparse
 import json
 import shlex

diff --git a/python/pip_install/tools/lock_file_generator/lock_file_generator_test.py b/python/pip_install/tools/lock_file_generator/lock_file_generator_test.py
index 0e36f6b..be244b1 100644
--- a/python/pip_install/tools/lock_file_generator/lock_file_generator_test.py
+++ b/python/pip_install/tools/lock_file_generator/lock_file_generator_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import argparse
 import json
 import tempfile

diff --git a/python/pip_install/tools/wheel_installer/namespace_pkgs.py b/python/pip_install/tools/wheel_installer/namespace_pkgs.py
index 5ddd4e1..7d23c0e 100644
--- a/python/pip_install/tools/wheel_installer/namespace_pkgs.py
+++ b/python/pip_install/tools/wheel_installer/namespace_pkgs.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Utility functions to discover python package types"""
 import os
 import textwrap

diff --git a/python/pip_install/tools/wheel_installer/namespace_pkgs_test.py b/python/pip_install/tools/wheel_installer/namespace_pkgs_test.py
index 5ac3390..4aa0fea 100644
--- a/python/pip_install/tools/wheel_installer/namespace_pkgs_test.py
+++ b/python/pip_install/tools/wheel_installer/namespace_pkgs_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import pathlib
 import shutil

diff --git a/python/pip_install/tools/wheel_installer/wheel.py b/python/pip_install/tools/wheel_installer/wheel.py
index f3d5f21..84af04c 100644
--- a/python/pip_install/tools/wheel_installer/wheel.py
+++ b/python/pip_install/tools/wheel_installer/wheel.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """Utility class to inspect an extracted wheel directory"""
 import email
 from typing import Dict, Optional, Set, Tuple

diff --git a/python/pip_install/tools/wheel_installer/wheel_installer.py b/python/pip_install/tools/wheel_installer/wheel_installer.py
index 1f6eaf2..77aa3a4 100644
--- a/python/pip_install/tools/wheel_installer/wheel_installer.py
+++ b/python/pip_install/tools/wheel_installer/wheel_installer.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import argparse
 import errno
 import glob

diff --git a/python/pip_install/tools/wheel_installer/wheel_installer_test.py b/python/pip_install/tools/wheel_installer/wheel_installer_test.py
index 2a6c293..8758b67 100644
--- a/python/pip_install/tools/wheel_installer/wheel_installer_test.py
+++ b/python/pip_install/tools/wheel_installer/wheel_installer_test.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import os
 import shutil
 import tempfile

diff --git a/python/private/py_package.bzl b/python/private/py_package.bzl
index 25e5bb6..08f4b0b 100644
--- a/python/private/py_package.bzl
+++ b/python/private/py_package.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Implementation of py_package rule"
 
 def _path_inside_wheel(input_file):

diff --git a/python/private/py_wheel.bzl b/python/private/py_wheel.bzl
index de9f65d..77690ed 100644
--- a/python/private/py_wheel.bzl
+++ b/python/private/py_wheel.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Implementation of py_wheel rule"
 
 load("//python/private:stamp.bzl", "is_stamping_enabled")

diff --git a/python/private/stamp.bzl b/python/private/stamp.bzl
index 6d0e549..6bc0cd9 100644
--- a/python/private/stamp.bzl
+++ b/python/private/stamp.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 """A small utility module dedicated to detecting whether or not the `--stamp` flag is enabled
 
 This module can be removed likely after the following PRs ar addressed:

diff --git a/python/runfiles/__init__.py b/python/runfiles/__init__.py
index eb42f79..3dc4141 100644
--- a/python/runfiles/__init__.py
+++ b/python/runfiles/__init__.py

@@ -1 +1,15 @@
+# Copyright 2023 The Bazel 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 .runfiles import *

diff --git a/tests/pip_repository_entry_points/pip_repository_entry_points_test.py b/tests/pip_repository_entry_points/pip_repository_entry_points_test.py
index 9e49ce9..0375153 100644
--- a/tests/pip_repository_entry_points/pip_repository_entry_points_test.py
+++ b/tests/pip_repository_entry_points/pip_repository_entry_points_test.py

@@ -1,4 +1,18 @@
 #!/usr/bin/env python3
+# Copyright 2023 The Bazel 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.
+
 
 import os
 import subprocess

diff --git a/tests/runfiles/runfiles_wheel_integration_test.sh b/tests/runfiles/runfiles_wheel_integration_test.sh
index 7faa027..8e9c608 100755
--- a/tests/runfiles/runfiles_wheel_integration_test.sh
+++ b/tests/runfiles/runfiles_wheel_integration_test.sh

@@ -1,4 +1,18 @@
 #!/usr/bin/env bash
+# Copyright 2023 The Bazel 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.
+
 # Manual test, run outside of Bazel, to check that our runfiles wheel should be functional
 # for users who install it from pypi.
 set -o errexit 

diff --git a/tools/bazel_integration_test/bazel_integration_test.bzl b/tools/bazel_integration_test/bazel_integration_test.bzl
index 93059fb..66e0cbd 100644
--- a/tools/bazel_integration_test/bazel_integration_test.bzl
+++ b/tools/bazel_integration_test/bazel_integration_test.bzl

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 "Define a rule for running bazel test under Bazel"
 
 load("//:version.bzl", "SUPPORTED_BAZEL_VERSIONS", "bazel_version_to_binary_label")

diff --git a/tools/bazel_integration_test/test_runner.py b/tools/bazel_integration_test/test_runner.py
index 27abf1f..03599fb 100644
--- a/tools/bazel_integration_test/test_runner.py
+++ b/tools/bazel_integration_test/test_runner.py

@@ -1,3 +1,17 @@
+# Copyright 2023 The Bazel 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.
+
 import json
 import os
 import platform

diff --git a/tools/bazel_integration_test/update_deleted_packages.sh b/tools/bazel_integration_test/update_deleted_packages.sh
index 8a215c6..ce7b05a 100755
--- a/tools/bazel_integration_test/update_deleted_packages.sh
+++ b/tools/bazel_integration_test/update_deleted_packages.sh

@@ -1,4 +1,18 @@
 #!/usr/bin/env bash
+# Copyright 2023 The Bazel 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.
+
 # For integration tests, we want to be able to glob() up the sources inside a nested package
 # See explanation in .bazelrc