def load_logged_in_user ( ) : user_id = session . get ( "user_id" ) g . user = User . query . get ( user_id ) if user_id is not None else None
python store userid in session
If a user id is stored in the session load the user object from the database into g . user .
def load_logged_in_user():
    """If a user id is stored in the session, load the user object from
    the database into ``g.user``."""
    user_id = session.get("user_id")
    g.user = User.query.get(user_id) if user_id is not None else None