def login_maybe_required(viewfunc):
    if settings.ALLOW_ANONYMOUS_ACCESS:
        return viewfunc
    return login_required(viewfunc)
measurement residual (innovation)
dataset/ETHPy150Open mozilla/moztrap/moztrap/view/utils/auth.py/login_maybe_required--crossover with--dataset/ETHPy150Open rlabbe/filterpy/filterpy/kalman/square_root.py/SquareRootKalmanFilter.y