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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_default_options_getter():
 """Return current TTY and DISPLAY settings for GnuPG pinentry."""

    options = []
    try:
        ttyname = subprocess.check_output(args=['tty']).strip()
        options.append(b'ttyname=' + ttyname)
    except subprocess.CalledProcessError as e:
        log.warning('no TTY found: %s', e)

    display = os.environ.get('DISPLAY')
    if display is not None:
        options.append('display={}'.format(display).encode('ascii'))
    else:
        log.warning('DISPLAY not defined')

    log.info('using %s for pinentry options', options)
    return lambda: options