human
Solve the following python programming problem given the following code:
def _find_splitting_points(expr, x) : 
    '
    Find numbers a such that a linear substitution x -> x + a would
    (hopefully) simplify expr.

    >>> from sympy.integrals.meijerint import _find_splitting_points as fsp
    >>> from sympy import sin
    >>> from sympy.abc import a, x
    >>> fsp(x, x)
    set([0])
    >>> fsp((x-1)**3, x)
    set([1])
    >>> fsp(sin(x+3)*x, x)
    set([-3, 0])
    ' 
    (p, q) = [Wild (n, exclude = [x]) for n in 'pq'] 
    def compute_innermost(expr, res) : 
        if (not isinstance (expr, Expr)) : 
            return 
m = expr.match (((p * x) + q)) 
        if (m and (m [p] != 0)) : 
            res.add (((- m [q]) / m [p])) 
            return 
if expr.is_Atom : 
            return 
for arg in expr.args : 
            compute_innermost (arg, res) 
innermost = set () 
    compute_innermost (expr, n) 
    return innermost 

    
    

    Fix the buggy line: compute_innermost (expr, n)
assistant
#Here is Python code to find numbers a such that a linear substitution x -> x + a would
.

compute_innermost (expr, innermost)