Method visit_UnaryOp

src/_pytest/assertion/rewrite.py:1034–1038

(self, unary: ast.UnaryOp)

        return ast.Name(res_var, ast.Load()), self.explanation_param(expl)

    def visit_UnaryOp(self, unary: ast.UnaryOp) -> tuple[ast.Name, str]:
        pattern = UNARY_MAP[unary.op.__class__]
        operand_res, operand_expl = self.visit(unary.operand)
        res = self.assign(ast.copy_location(ast.UnaryOp(unary.op, operand_res), unary))
        return res, pattern % (operand_expl,)

    def visit_BinOp(self, binop: ast.BinOp) -> tuple[ast.Name, str]:
        symbol = BINOP_MAP[binop.op.__class__]