Refactor: apply pyformat for coding style consistency

add pyformat for presubmit hook

Flag: EXEMPT mainline
Bug: 419423721
Test: atest CtsConnectivityMultiDevicesTestCases
Change-Id: I9abc5cee454e8c8e21ce7e3c134145857680251f

preupload_hook_script.py

@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+# Copyright 2025, The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Preupload hook to perform necessary checks and formatting on python files."""
+
+import argparse
+import concurrent.futures
+import multiprocessing
+import pathlib
+import shlex
+import subprocess
+import sys
+
+
+def _filter_python_files(files: list[pathlib.Path]) -> list[pathlib.Path]:
+  """Filter a list of files and return a new list of python files only."""
+  return [file for file in files if file.suffix == '.py']
+
+
+def _check_run_shell_command(cmd: str, cwd: str = None) -> None:
+  """Run a shell command and raise error if failed."""
+  if subprocess.run(shlex.split(cmd), cwd=cwd, check=False).returncode:
+    print('Preupload files did not pass Connectivity preupload hook script.')
+    sys.exit(1)
+
+
+def _run_pyformat(files: list[pathlib.Path]) -> None:
+  """Run pyformat on certain projects."""
+  if subprocess.run(
+      shlex.split('which pyformat'),
+      check=False,
+  ).returncode:
+    print('pyformat not available. Please run sudo apt install pyformat.')
+    sys.exit(1)
+
+  def _run_pyformat_on_file(file):
+    completed_process = subprocess.run(
+        shlex.split('pyformat --force_quote_type single ' + file.as_posix()),
+        capture_output=True,
+        check=False,
+    )
+
+    if completed_process.stdout:
+      subprocess.run(
+          shlex.split(
+              'pyformat -i --force_quote_type single ' + file.as_posix()
+          ),
+          check=False,
+      )
+      return True
+    return False
+
+  cpu_count = multiprocessing.cpu_count()
+  with concurrent.futures.ThreadPoolExecutor(max_workers=cpu_count) as executor:
+    need_reformat = executor.map(
+        _run_pyformat_on_file, _filter_python_files(files)
+    )
+
+  if any(need_reformat):
+    print(
+        'Reformatting completed. Please add the modified files to git and rerun'
+        ' the repo preupload hook.'
+    )
+    sys.exit(1)
+
+
+def get_preupload_files() -> list[pathlib.Path]:
+  """Get the list of files to be uploaded."""
+  parser = argparse.ArgumentParser()
+  parser.add_argument('preupload_files', nargs='*', help='Files to upload.')
+  args = parser.parse_args()
+  files_to_upload = args.preupload_files
+  file_paths_to_upload = [
+      pathlib.Path(file).resolve() for file in files_to_upload
+  ]
+  return [file for file in file_paths_to_upload if file.exists()]
+
+
+if __name__ == '__main__':
+  preupload_files = get_preupload_files()
+  _run_pyformat(preupload_files)