Display an image for the phrase in sys.argv, if possible

def handle_command_line():
    """Display an image for the phrase in sys.argv, if possible"""
    phrase = ' '.join(sys.argv[1:]) or 'random'

    try:
        giphy = get_random_giphy(phrase)
    except ValueError:
        sys.stderr.write('Unable to find any GIFs for {!r}\n'.format(phrase))
        sys.exit(1)

    display(fetch_image(giphy))