text: import datetime
  import os
  here = os.path.dirname(os.path.realpath(__file__))
  python_files = []
  for root, dirnames, filenames in os.walk(here):
      for f in filenames:
          if f.endswith('.py'):
              python_files.append(os.path.join(root, f))
  this_year = datetime.datetime.now().year
  for file_path in python_files:
      lines = []
      with open(file_path) as f:
          for l in f:
              if l.startswith('# Copyright ') and 'Joel Dunham' in l:
                  new_line = '# Copyright %d Joel Dunham\n' % this_year
                  lines.append(new_line)
              else:
                  lines.append(l)
      with open(file_path, 'w') as f:
          f.write(''.join(lines))
  