code: def help(*args):
      
      from . import commands
      parser = argparse.ArgumentParser(prog="%s %s" % (__package__, help.__name__), description=help.__doc__)
      parser.add_argument('COMMAND', help="command to show help for", nargs="?", choices=__all__)
      args = parser.parse_args(args)
      if args.COMMAND:
          for l in getattr(commands, args.COMMAND)('-h'):
              yield l
      else:
          parser.parse_args(['-h'])
docs: Prints help.