old_contents: #!/usr/bin/env python3
  #
  # Copyright The Mbed TLS Contributors
  # SPDX-License-Identifier: Apache-2.0
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # 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 script generates a file called identifiers that contains all Mbed TLS
  identifiers found on internal headers. This is the equivalent of what was
  previously `list-identifiers.sh --internal`, and is useful for generating an
  exclusion file list for ABI/API checking, since we do not promise compatibility
  for them.
  
  It uses the CodeParser class from check_names.py to perform the parsing.
  
  The script returns 0 on success, 1 if there is a script error.
  Must be run from Mbed TLS root.
  """
  
  import argparse
  import logging
  import traceback
  import sys
  from check_names import CodeParser
  
  def main():
      parser = argparse.ArgumentParser(
          formatter_class=argparse.RawDescriptionHelpFormatter,
          description=(
              "This script writes a list of parsed identifiers in internal "
              "headers to \"identifiers\". This is useful for generating a list "
              "of names to exclude from API/ABI compatibility checking. "))
  
      parser.parse_args()
  
      name_check = CodeParser(logging.getLogger())
      result = name_check.parse_identifiers([
          "include/mbedtls/*_internal.h",
          "library/*.h"
      ])
      result.sort(key=lambda x: x.name)
  
      identifiers = ["{}\n".format(match.name) for match in result]
      with open("identifiers", "w", encoding="utf-8") as f:
          f.writelines(identifiers)
  
  if __name__ == "__main__":
      main()
  
new_contents: #!/usr/bin/env python3
  #
  # Copyright The Mbed TLS Contributors
  # SPDX-License-Identifier: Apache-2.0
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # 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 script generates a file called identifiers that contains all Mbed TLS
  identifiers found on internal headers. This is the equivalent of what was
  previously `list-identifiers.sh --internal`, and is useful for generating an
  exclusion file list for ABI/API checking, since we do not promise compatibility
  for them.
  
  It uses the CodeParser class from check_names.py to perform the parsing.
  
  The script returns 0 on success, 1 if there is a script error.
  Must be run from Mbed TLS root.
  """
  
  import argparse
  import logging
  from check_names import CodeParser
  
  def main():
      parser = argparse.ArgumentParser(
          formatter_class=argparse.RawDescriptionHelpFormatter,
          description=(
              "This script writes a list of parsed identifiers in internal "
              "headers to \"identifiers\". This is useful for generating a list "
              "of names to exclude from API/ABI compatibility checking. "))
  
      parser.parse_args()
  
      name_check = CodeParser(logging.getLogger())
      result = name_check.parse_identifiers([
          "include/mbedtls/*_internal.h",
          "library/*.h"
      ])
      result.sort(key=lambda x: x.name)
  
      identifiers = ["{}\n".format(match.name) for match in result]
      with open("identifiers", "w", encoding="utf-8") as f:
          f.writelines(identifiers)
  
  if __name__ == "__main__":
      main()
  
subject: Remove unused imports in list_internal_identifiers.py