def warning(self, node, reason):
        """Used for warning the user about possible uncertainty in the
        translation.

        First argument is the top-level node for the code in question.
        Optional second argument is why it can't be converted.
        """
        lineno = node.get_lineno()
        self.log_message((lineno, reason) % "Line %d: %s")
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/lib2to3/fixer_base.py/BaseFix.warning/swapped operands of `%`