old_contents: #!/usr/bin/env python3
  
  """
  Entry point for utility, option handling.
  """
  
  
  def main() -> int:
      """
      Entry point for command line utility.
  
      :return: integer for return code of command line
      """
      import argparse
      import importlib
      import kcheck
      import logging
      import sys
  
      parser = argparse.ArgumentParser(description='Kernel configuration check utility')
      parser.add_argument('-c', '--config', help='kcheck config file', default='/etc/kcheck.conf')
      parser.add_argument('-k', '--kernel', help='kernel config file', default='/usr/src/linux/.config')
      parser.add_argument('-v', '--verbose', help='Output extra information', action='count', default=2)
      parser.add_argument('-V', '--version', help='Print version information and exit', action='store_true')
  
      subparsers = parser.add_subparsers(help='commands')
  
      gen_parser = subparsers.add_parser('genconfig', help='Generate config requirements from installed packages')
      gen_parser.add_argument('-l', '--list', help='list available package manager integrations', action='store_true')
      gen_parser.add_argument('-m', '--manager', help='Package manager', choices=kcheck.ALLOWED_PKGMGR, default='portage')
      gen_parser.set_defaults(mode='genconfig')
      
      args = parser.parse_args()
  
      # set up logging
      log_level = 50 - (args.verbose * 10)
      logging.basicConfig(level=log_level)
      log = logging.getLogger('main')
  
      if args.version:
          print('kcheck - Kernel configuration checker version v'+kcheck.__version__)
          print('  Created by', kcheck.__author__)
          return 0
  
      if 'mode' in args:
          if args.mode == 'genconfig':
              if args.list:
                  print('The following package managers can be used for generating required kernel configurations')
                  [print('   ', p) for p in kcheck.ALLOWED_PKGMGR]
                  return 0
  
              # get the module name for the package manager, import and hand over
              module = 'kcheck.'+args.manager
              log.debug('Loading module %s' % module)
              try:
                  package_manager = importlib.import_module(module)
              except ImportError:
                  print('Unable to load module for package manager', args.manager, file=sys.stderr)
                  return 1
  
              return package_manager.generate_config(args)
  
      else:
          # no "mode", so run kcheck
          import kcheck.checker
          return kcheck.checker.check_config(args)
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python3
  
  """
  Entry point for utility, option handling.
  """
  
  
  def main() -> int:
      """
      Entry point for command line utility.
  
      :return: integer for return code of command line
      """
      import argparse
      import importlib
      import kcheck
      import logging
      import sys
  
      parser = argparse.ArgumentParser(description='Kernel configuration check utility')
      parser.add_argument('-c', '--config', help='kcheck config file', default='/etc/kcheck.conf')
      parser.add_argument('-k', '--kernel', help='kernel config file', default='/usr/src/linux/.config')
      parser.add_argument('-v', '--verbose', help='Output extra information', action='count', default=2)
      parser.add_argument('-V', '--version', help='Print version information and exit', action='store_true')
  
      subparsers = parser.add_subparsers(help='commands')
  
      gen_parser = subparsers.add_parser('genconfig', help='Generate config requirements from installed packages')
      gen_parser.add_argument('-l', '--list', help='list available package manager integrations', action='store_true')
      gen_parser.add_argument('-m', '--manager', help='Package manager', choices=kcheck.ALLOWED_PKGMGR, default='portage')
      gen_parser.set_defaults(mode='genconfig')
      
      args = parser.parse_args()
  
      # set up logging
      log_level = 50 - (args.verbose * 10)
      logging.basicConfig(level=log_level)
      log = logging.getLogger('main')
  
      if args.version:
          print('kcheck', kcheck.__version__)
          return 0
  
      if 'mode' in args:
          if args.mode == 'genconfig':
              if args.list:
                  print('The following package managers can be used for generating required kernel configurations')
                  [print('   ', p) for p in kcheck.ALLOWED_PKGMGR]
                  return 0
  
              # get the module name for the package manager, import and hand over
              module = 'kcheck.'+args.manager
              log.debug('Loading module %s' % module)
              try:
                  package_manager = importlib.import_module(module)
              except ImportError:
                  print('Unable to load module for package manager', args.manager, file=sys.stderr)
                  return 1
  
              return package_manager.generate_config(args)
  
      else:
          # no "mode", so run kcheck
          import kcheck.checker
          return kcheck.checker.check_config(args)
  
  if __name__ == '__main__':
      main()
  
subject: clean up --version output