def _convert_expr(self, lj, expr):
        try:
            # Match CSE return data structure.
            if len(expr) == 2:
                tmp_exprs = expr[0]
                final_exprs = expr[1]
                if len(final_exprs) != 1 and self.signature.ret_type == ctypes.c_double:
                    raise NotImplementedError("Return of multiple expressions not supported for this callback")
                for name, e in tmp_exprs:
                    val = lj._print(e)
                    lj._add_tmp_var(name, val)
        except __HOLE__:
            final_exprs = [expr]

        vals = [lj._print(e) for e in final_exprs]

        return vals
dataset/ETHPy150Open sympy/sympy/sympy/printing/llvmjitcode.py/LLVMJitCode._convert_expr