def expect(self, s):
        if self.accept(s):
            return True
        raise ParseException((s, self.current.tid) % 'Expecting %s got %s.', self.current.lineno, self.current.colno)
dataset/ETHPy150Open mesonbuild/meson/mesonbuild/mparser.py/Parser.expect/swapped operands of `%`