old_contents: #!/usr/bin/env python3
  # Copyright lowRISC contributors.
  # Licensed under the Apache License, Version 2.0, see LICENSE for details.
  # SPDX-License-Identifier: Apache-2.0
  r"""Mako template to Hjson register description
  """
  import sys
  import argparse
  from io import StringIO
  
  from mako.template import Template
  
  
  def main():
      parser = argparse.ArgumentParser(prog="reg_timer")
      parser.add_argument(
          'input',
          nargs='?',
          metavar='file',
          type=argparse.FileType('r'),
          default=sys.stdin,
          help='input template file')
      parser.add_argument('--harts', '-s', type=int, help='Number of Harts')
      parser.add_argument(
          '--timers',
          '-t',
          type=int,
          default=1,
          help='Number of Timers in a Hart. Maximum up to 32')
  
      args = parser.parse_args()
  
      if args.timers > 32:
          raise Exception("OOB TIMERS")
      # Determine output: if stdin then stdout if not then ??
      out = StringIO()
  
      reg_tpl = Template(args.input.read())
      out.write(reg_tpl.render(harts=args.harts, timers=args.timers))
  
      print(out.getvalue())
  
      out.close()
  
  
  if __name__ == "__main__":
      main()
  
new_contents: #!/usr/bin/env python3
  # Copyright lowRISC contributors.
  # Licensed under the Apache License, Version 2.0, see LICENSE for details.
  # SPDX-License-Identifier: Apache-2.0
  r"""Mako template to Hjson register description
  """
  import sys
  import argparse
  from io import StringIO
  
  from mako.template import Template
  
  
  def main():
      parser = argparse.ArgumentParser(prog="reg_timer")
      parser.add_argument(
          'input',
          nargs='?',
          metavar='file',
          type=argparse.FileType('r'),
          default=sys.stdin,
          help='input template file')
      parser.add_argument('--harts', '-s', type=int, help='Number of Harts')
      parser.add_argument(
          '--timers',
          '-t',
          type=int,
          default=1,
          help='Number of Timers in a Hart. Maximum up to 32')
  
      args = parser.parse_args()
  
      if args.timers > 32:
          raise Exception("OOB TIMERS")
      # Determine output: if stdin then stdout if not then ??
      out = StringIO()
  
      reg_tpl = Template(args.input.read())
      out.write(reg_tpl.render(harts=args.harts, timers=args.timers).rstrip())
  
      print(out.getvalue())
  
      out.close()
  
  
  if __name__ == "__main__":
      main()
  
subject: Fix trailing whitespace