Proctor LEVEL_2101

Asked to run the code , after that asked questions about validation in product editing and purchasing , asked the base class of exception handling in python , how to validate the celery task which is long running file and when the user logs out or when the token gets expired , how to handle this celery task . What's the default time of authentication token. Differences between redis cache and memcache . Purpose of redis . Asked about swapping of decorators in backend .

def login_required(fn):
    @wraps(fn)
    def wrapper(*a, **k):
        if 'user_id' not in session:
            return redirect(url_for('auth.login'))
        return fn(*a, **k)
    return wrapper