old_contents: """Command line interface to the fastlite package
  
  """
  
  import sys
  import argparse
  from fastalite import fastalite, fastqlite, Opener
  from . import __version__
  
  
  def count(seqs):
      for i, seq in enumerate(seqs, 1):
          pass
      print(i)
  
  
  def names(seqs):
      for seq in seqs:
          print(seq.id)
  
  
  def lengths(seqs):
      for seq in seqs:
          print('{}\t{}'.format(seq.id, len(seq.seq)))
  
  
  def main(arguments):
  
      actions = {'count': count, 'names': names, 'lengths': lengths}
  
      parser = argparse.ArgumentParser(
          prog='fastalite', description=__doc__,
          formatter_class=argparse.RawDescriptionHelpFormatter)
      parser.add_argument('action', choices=actions.keys(),
                          help="Action to perform")
      parser.add_argument('infile', help="Input file", type=Opener('r'))
      parser.add_argument('-V', '--version', action='version',
                          version=__version__,
                          help='Print the version number and exit')
      args = parser.parse_args(arguments)
  
      with args.infile as f:
          readfun = fastalite if 'fasta' in f.name else fastqlite
          seqs = readfun(args.infile)
          try:
              fun = actions[args.action]
              fun(seqs)
          except ValueError, err:
              sys.stderr.write('Error: {}\n'.format(str(err)))
              return 1
  
  if __name__ == '__main__':
      sys.exit(main(sys.argv[1:]))
  
new_contents: """Command line interface to the fastlite package
  
  """
  
  import sys
  import argparse
  from fastalite import fastalite, fastqlite, Opener
  from . import __version__
  
  
  def count(seqs):
      for i, seq in enumerate(seqs, 1):
          pass
      print(i)
  
  
  def names(seqs):
      for seq in seqs:
          print(seq.id)
  
  
  def lengths(seqs):
      for seq in seqs:
          print('{}\t{}'.format(seq.id, len(seq.seq)))
  
  
  def main(arguments):
  
      actions = {'count': count, 'names': names, 'lengths': lengths}
  
      parser = argparse.ArgumentParser(
          prog='fastalite', description=__doc__,
          formatter_class=argparse.RawDescriptionHelpFormatter)
      parser.add_argument('action', choices=actions.keys(),
                          help="Action to perform")
      parser.add_argument('infile', help="Input file",
                          metavar='infile.{fasta,fastq}[{.gz,.bz2}]',
                          type=Opener('r'))
      parser.add_argument('-V', '--version', action='version',
                          version=__version__,
                          help='Print the version number and exit')
      args = parser.parse_args(arguments)
  
      with args.infile as f:
          readfun = fastalite if 'fasta' in f.name else fastqlite
          seqs = readfun(args.infile)
          try:
              fun = actions[args.action]
              fun(seqs)
          except ValueError, err:
              sys.stderr.write('Error: {}\n'.format(str(err)))
              return 1
  
  if __name__ == '__main__':
      sys.exit(main(sys.argv[1:]))
  
subject: update docstring for cli