Check if comic name already exists.

def has_comic(name):
    """Check if comic name already exists."""
    names = [
        ("Creators/%s" % name).lower(),
        ("DrunkDuck/%s" % name).lower(),
        ("GoComics/%s" % name).lower(),
        ("KeenSpot/%s" % name).lower(),
        ("ComicGenesis/%s" % name).lower(),
        ("SmackJeeves/%s" % name).lower(),
    ]
    for scraperclass in get_scraperclasses():
        lname = scraperclass.getName().lower()
        if lname in names or lname == name.lower():
            return True
    return False