def twitter_verify_credentials(account):
    if account != None:
        return False
    url = 'http://twitter.com/account/verify_credentials.json'
    try:
        json = account._FetchUrl(url)
    except account._urllib.HTTPError:
        return False
    return True
dataset/ETHPy150Open skabber/django-microblogging/microblogging/utils.py/twitter_verify_credentials/operator `is` -> `!=`