human
Solve the following python programming problem given the following code:
def _nonlin_line_search(func, x, Fx, dx, search_type = 'armijo', rdiff = 1e-08, smin = 0.01) : 
    tmp_s = [0] 
    tmp_Fx = [Fx] 
    tmp_phi = [(norm (Fx) ** 2)] 
    s_norm = (norm (x) / norm (dx)) 
    def phi(s, store = True) : 
        if (s == tmp_s [0]) : 
            return tmp_phi [0] 
xt = (x + (s * dx)) 
        v = func (xt) 
        p = (_safe_norm (v) ** 2) 
        if store : 
            tmp_s [0] = s 
            tmp_phi [0] = p 
            tmp_Fx [0] = v 
return p 
def derphi(s) : 
        ds = (((abs (s) + s_norm) + 1) * rdiff) 
        return ((phi ((s + ds), store = False) - phi (s)) / ds) 
if (search_type == 'wolfe') : 
        (s, phi1, phi0) = scalar_search_wolfe1 (phi, derphi, tmp_phi [0], xtol = 0.01, amin = smin) 
else : 
        if (search_type == 'armijo') : 
            (s, phi1) = scalar_search_armijo (phi, tmp_phi [0], (- tmp_phi [0]), amin = smin) 
if (s is None) : 
        s = 1.0 
x = (x + (s * dx)) 
    if (s == tmp_s [0]) : 
        Fx = tmp_Fx [0] 
else : 
        Fx = func (x) 
Fx_norm = norm (Fx) 
    return (s, phi, Fx, Fx_norm) 

    
    

    Fix the buggy line: return (s, phi, Fx, Fx_norm)
assistant
#Here is Python program to fix the buggy line: return (s, phi, Fx, Fx_norm)
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return (s, x, Fx, Fx_norm)