human
Solve the following python programming problem given the following code:
def _diagonal(n, value) : 
    value = float (value) 
    def eltAtIx(ix) : 
        if ((ix % n) == (ix / n)) : 
            return value 
else : 
            return 0.0 
vals = [eltAtIx (ix) for ix in xrange ((n * tr))] 
    tr = numpy.array (vals) 
    tr = tr.reshape ((n, n)) 
    return tr 

    
    

    Fix the buggy line: vals = [eltAtIx (ix) for ix in xrange ((n * tr))]
assistant
#Here is Python code to fix the buggy line: vals = [eltAtIx (ix) for ix in xrange ((n * tr))]
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vals = [eltAtIx (ix) for ix in xrange ((n * n))]