human
Solve the following python programming problem given the following code:
def canonicalize(node) : 
    "
    Rewrites the AST so that all comparisons are in a
    canonical order. This allows the expressions:
        gender is 'Male' / 'Male' is gender

    to be transformed into the same form. This makes
    refactoring expressions order independent.
    " 
    def replace_func(pattern, n) : 
        l_literal = isinstance (n.left, ast.Literal) 
        r_literal = isinstance (n.right, ast.Literal) 
        if ((not l_literal) and r_literal) : 
            n.reverse () 
else : 
            if (l_literal and r_literal) : 
                if (n.left.static and (not n.right.static)) : 
                    n.reverse () 
else : 
                    if ((not n.left.static) and (not n.right.static) and (n.left.value > n.right.value)) : 
                        n.reverse () 
else : 
                        if (n.left.static and n.right.static and (n.left.value > n.right.value)) : 
                            n.reverse () 
p = SimplePattern ('types:CompareOperator') 
    return tile (node, [p], node) 

    
    

    Fix the buggy line: return tile (node, [p], node)
assistant
#Here is Python code to fix the buggy line: return tile (node, [p], node)
.

return tile (node, [p], def replace_func()