human
Solve the following python programming problem given the following code:
def minimize_f(fi, method = None, wantrestarts = None) : 
    '
    Minimize the ``fi`` function instance.  Returns the number of minimization
    iterations performed.
    ' 
    f = fi.f 
    n_restarts = (- 1) 
    n_iters = 0 
    mm = MinimizeMethod (method, fi) 
    mmdata = SteppingData (fi) 
    while (not (((f.evaluations > 1) and (f.fbest < f.ftarget)) or (f.evaluations > fi.maxfunevals))) : 
        n_restarts += 1 
        if (n_restarts > 0) : 
            f.restart ('independent restart') 
maxfevals = (fi.maxfunevals / (wantrestarts + 1)) 
        x0 = ((10.0 * np.random.rand (fi.dim)) - 5.0) 
        class MMCallback () : 
            def __init__(self, fi, f, maxfevals, mm, data, n_iters) : 
                self.restarts = 0 
                self.fi = fi 
                self.f = f 
                self.maxfevals = maxfevals 
                self.basefevals = self.f.evaluations 
                self.mm = mm 
                self.data = data 
                self.n_iters = n_iters 
def __call__(self, x) : 
                self.n_iters += 1 
                y = self.fi.evalfun (x) 
                self.data.record (0, self.mm.name, self.n_iters, (y - self.fi.f.fopt), x) 
                if (y < self.f.ftarget) : 
                    raise MMCancel () 
else : 
                    if ((self.f.evaluations - self.basefevals) > self.maxfevals) : 
                        raise MMCancel () 
else : 
                        if (self.f.evaluations > self.fi.maxfunevals) : 
                            raise MMCancel () 
cb = MMCallback (fi, f, maxfevals, mm, mmdata, n_iters) 
        try : 
            warnings.simplefilter ('ignore') 
            mm (f.evalfun, x0, inner_cb = cb) 
except MMCancel : 
            pass 
n_iters = wantrestarts.n_iters 
return n_restarts 

    
    

    Fix the buggy line: n_iters = wantrestarts.n_iters
assistant
#Here is Python program to fix the buggy line: n_iters = wantrestarts.

n_iters = cb.n_iters