old_contents: from __future__ import absolute_import
  from __future__ import print_function
  from __future__ import unicode_literals
  
  import argparse
  import os
  import os.path
  
  
  def check_symlinks(argv=None):
      parser = argparse.ArgumentParser(description='Checks for broken symlinks.')
      parser.add_argument('filenames', nargs='*', help='Filenames to check')
      args = parser.parse_args(argv)
  
      retv = 0
  
      for filename in args.filenames:
          if os.path.islink(filename) and not os.path.exists(filename):
              print('{0}: Broken symlink'.format(filename))
              retv = 1
  
      return retv
  
  
  if __name__ == '__main__':
      exit(check_symlinks())
  
new_contents: from __future__ import absolute_import
  from __future__ import print_function
  from __future__ import unicode_literals
  
  import argparse
  import os
  import os.path
  
  
  def check_symlinks(argv=None):
      parser = argparse.ArgumentParser(description='Checks for broken symlinks.')
      parser.add_argument('filenames', nargs='*', help='Filenames to check')
      args = parser.parse_args(argv)
  
      retv = 0
  
      for filename in args.filenames:
          if (
                  os.path.islink(filename) and
                  not os.path.exists(filename)
          ):  # pragma no cover (symlink support required)
              print('{0}: Broken symlink'.format(filename))
              retv = 1
  
      return retv
  
  
  if __name__ == '__main__':
      exit(check_symlinks())
  
subject: Fix coverage on check_symlinks for windows