def _open_terminal():
    """Open pty master and return (master_fd, tty_name).
    SGI and generic BSD version, for when openpty() fails."""
    try:
        import sgi
    except ImportError:
        pass
    else:
        try:
            tty_name, master_fd = sgi._getpty(os.O_RDWR, 0666, 0)
        except __HOLE__, msg:
            raise os.error, msg
        return master_fd, tty_name
    for x in 'pqrstuvwxyzPQRST':
        for y in '0123456789abcdef':
            pty_name = '/dev/pty' + x + y
            try:
                fd = os.open(pty_name, os.O_RDWR)
            except os.error:
                continue
            return (fd, '/dev/tty' + x + y)
    raise os.error, 'out of pty devices'
dataset/ETHPy150Open azoft-dev-team/imagrium/env/Lib/pty.py/_open_terminal